作者： Liao, Xionghui;Song, Tongqing;Xiong, Ying;Zou, Dongsheng;Wang, Kelin;...

期刊： Ecological Indicators,2021年129:107619 ISSN：1470-160X

通讯作者： Wang, Kelin(kelin@isa.ac.cn)

作者机构： [Zou, Dongsheng; Liao, Xionghui] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Song, Tongqing; Wang, Kelin; Du, Hu; Zhao, Jie; Liao, Xionghui] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Hunan, Peoples R China.;[Song, Tongqing; Wang, Kelin; Du, Hu; Zhao, Jie; Liao, Xionghui] Chinese Acad Sci, Huanjiang Observat & Res Stn Karst Ecosyst, Huanjiang 547100, Guangxi, Peoples R China.;[Xiong, Ying] Changsha Univ Sci & Technol, Coll Architecture, Changsha 410076, Peoples R China.

通讯机构： [Kelin Wang; Hu Du; Jie Zhao] K;Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China<&wdkj&>Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang, Guangxi 547100, China

关键词： Soil nematodes;Oceanic islands;Latitude;Temperature;Potassium;Moisture;Plant community

摘要： Factors that influence the composition and diversity of soil nematode communities on oceanic islands are poorly understood. In this study, we evaluated the soil nematode communities and associated biotic and abiotic factors on five oceanic islands in the north of the South China Sea. We detected 38 nematode genera and found that bacterivores and fungivores were the dominant trophic groups, representing 54.2–70.4% and 15.1–35.3%, respectively, of total soil nematode abundance. The abundances of total soil nematodes and of all trophic groups, maturity, structure indices and nematode diversity were positively correlated with island latitude and area, and were negatively correlated with soil total K and annual temperature. In addition, the abundances of total soil nematodes, bacterivores, herbivores and nematode dominance index were positively associated with soil available K. The abundances of total soil nematodes, fungivores, herbivores, predators and omnivores, maturity, structure, Shannon diversity indices were positively related to soil moisture. Variation partitioning analysis showed that the combination of soil properties and climatic-geographical factors explained more of the variation (26.8–61.5%). The results suggest that larger island can maintain greater nematode diversity than smaller islands due to the greater diversity of habitats on larger island. The key climatic-geographical and edaphic factors affecting soil nematode communities were latitude, annual temperature, soil moisture and total K, respectively © 2021 The Author(s)

语种： 英文

作者： Jin, Zhouyi;Ge, Dabing

期刊： Computational Intelligence and Neuroscience,2021年2021 ISSN：1687-5265

通讯作者： Jin, Zhouyi(jinzhouyi@stu.hunau.edu.cn)

作者机构： [Jin, Zhouyi; Ge, Dabing] College of Resources and Environment, Hunan Agricultural University, Changsha;410128, China;Zhejiang College of Construction, Hangzhou;311231, China;[Jin, Zhouyi] 410128, China<&wdkj&>Zhejiang College of Construction, Hangzhou

通讯机构： [Jin, Z.] C;College of Resources and Environment, China

摘要： Land use management is the primary source of resource planning, and the management part of the sustainable ecosystem of water and soil resources is an important evidence for the sustainable development of the economic and social system. This is guided by the concept of sustainable development, and on the basis of the accumulation of relevant research practices and outcomes at home and abroad, water and land based systems are a research object and study the status of water and soil resource utilization, the state of water and soil coupling, and the supply and demand status of water resources. A balance analysis was carried out, and the gray linear programming model was used to optimize the allocation of land resources using the water quality dynamic monitoring model, which achieved the best coupling of water and soil resources and the greatest benefit. In this paper, aiming at the two types of problems in comprehensive water quality evaluation, namely, aiming at indifference and spatiotemporal changes, this article explores a powerful calculation method based on variable identification models and compiles a GIS geostatistical model (it is a computer-based tool that can draw and analyze ground objects; event GIS technology integrates seamless visual effects between map and local analysis services and general data processing services) to perform spatial analysis and visual expression of the evaluation results, in-depth analysis of the connotation, and theory and optimal allocation model of land resources optimal allocation. On the basis of the conceptual framework of the best share of land sources, the theories that should follow in the best share of land sources are discussed, and the available models and their characteristics are analyzed and compared. Experimental results show that, in the data provided by the analysis of water supply and demand balance at the annual spring system site by constructing an energy monitoring model, the water supply conditions of different water sources are rough, but the data of this study shows that the water shortage rate has reached 25%. In addition, the article explains the setting variables for the optimal allocation of land resources in water sources and compares and analyzes the optimization and planning of land resources in water sources. © 2021 Zhouyi Jin and Dabing Ge.

语种： 英文

作者： Zhang, Manyun;O'Connor, Patrick J.;Zhang, Jinyu;Ye, Xiaoxin*

期刊： Geoderma,2021年384:114801 ISSN：0016-7061

通讯作者： Ye, Xiaoxin

作者机构： [Zhang, Manyun] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Zhang, Manyun] Griffith Univ, Sch Nat Sci, Environm Futures Res Inst, Brisbane, Qld 4111, Australia.;[O'Connor, Patrick J.] Univ Adelaide, Ctr Global Food & Resources, Adelaide, SA 5005, Australia.;[Zhang, Jinyu; Ye, Xiaoxin] Anhui Univ, Sch Resources & Environm Engn, Anhui Prov Key Lab Wetland Ecosyst Protect & Rest, Hefei 230601, Peoples R China.

通讯机构： [Ye, Xiaoxin] A;Anhui Univ, Sch Resources & Environm Engn, Anhui Prov Key Lab Wetland Ecosyst Protect & Rest, Hefei 230601, Peoples R China.

关键词： Enzyme activities;Functional gene abundances;Illumina-MiSeq sequencing;N cycling;P cycling

摘要： The riparian zone is a spatially fluctuating ecotone between terrestrial and aquatic ecosystems and has key ecological functions, due to specific geographic conditions and seasonal environmental changes. The comprehensive functions of vegetation cover and microbial community in riparian zones might generate positive consequences for nutrient cycling. In this study, four different vegetation-covered soils in a riparian zone on the Yangtze River was selected. Soil nutrient concentration and microbial properties, including nitrogen (N) and phosphorus (P) cycling and microbial community structure, were analyzed, and the relationships among soil nutrient concentrations, microbial properties and vegetation covers were also linked. Vegetation covers increased soil NH4+-N supply by enhancing N mineralization and positively affected available N retention through inhibition of soil nitrification. Plant species outweighed plant biomass in determining soil microbial properties related to P mineralization, including phosphatase activities and functional gene abundances. Vegetation covers significantly increased Acidobacteria and Mortierellomycota relative abundances. Soil bacterial and fungal communities had opposing responses to the impacts of plant species richness and biomass. In the riparian zone, plant species outweighed plant biomass in promoting soil N and P mineralization, and vegetation covers, regardless of plant species, improved available nutrient supplies and retentions and shaped soil microbial community. © 2020 Elsevier B.V.

语种： 英文

作者： Yi, Kexin;Lei, Ming;Peng, Liang;Chen, Anwei;Luo, Si*

期刊： Chemosphere,2021年269:129366 ISSN：0045-6535

通讯作者： Luo, Si

作者机构： [Luo, Si; Peng, Liang; Chen, Anwei; Lei, Ming; Yi, Kexin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Yi, Kexin] Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China.

通讯机构： [Luo, Si] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

关键词： Biochar;Degradation;DEP;Free radical;Mechanism

摘要： This study presents a one-step synthetic approach for magnetic biochar (MBC) photo-degradation of diethyl phthalate (DEP). The results showed that MBC exhibited better catalytic property for DEP degradation than BC, and its catalytic performance was influenced by the amount of Fe doping. Electron paramagnetic resonance (EPR), quenching experiments, and chemical probe studies confirmed the presence of persistent free radicals (PFRs), hydroxyl radicals (·OH), and superoxide anion radical (·O2−) in both of BC and MBC. Solar light promoted the formation of PFRs in BC system, which transferred electrons to oxygen to form ·O2−, thus yielding ·OH. On the other hand, electron transfer occurred between PFRs and Fe3+ for MBC, Fe2+ played an important role in activation of O2 and ·O2− production. Subsequently, photo-Fenton reaction was primarily responsible for ·OH formation. This work compared the different generation pathways for ROS between BC and MBC and provides new insight into the possible mediatory roles of BC in O2 activation under solar light by transition metals. © 2020 Elsevier Ltd

语种： 英文

作者： Fu, Hui*;Zhou, Ye;Yuan, Guixiang;Peng, Hui;Wu, Aiping;...

期刊： Ecological Engineering,2021年159:106092 ISSN：0925-8574

通讯作者： Fu, Hui

作者机构： [Wu, Aiping; Zhou, Ye; Fu, Hui; Yuan, Guixiang; Peng, Hui] Hunan Agr Univ, Dept Ecol, Coll Resources & Environm, Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La, Changsha 410128, Peoples R China.;[Li, Wei] Nanchang Inst Technol, Res Inst Ecol & Environm Sci, Nanchang 330099, Jiangxi, Peoples R China.;[Jeppesen, Erik] Aarhus Univ, Dept Biosci, Vejlsovej 25, DK-8600 Silkeborg, Denmark.;[Jeppesen, Erik] Univ Chinese Acad Sci, Sino Danish Ctr Educ & Res SDC, Beijing, Peoples R China.;[Jeppesen, Erik] Middle East Tech Univ, Dept Biol Sci, Limnol Lab, Ankara, Turkey.

通讯机构： [Fu, Hui] H;Hunan Agr Univ, Dept Ecol, Coll Resources & Environm, Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La, Changsha 410128, Peoples R China.

关键词： Beta diversity;Decoupling of species and functions;Functional redundancy;Poyang Lake wetland;Spatial scale

摘要： Disentangling the contributions of environmental gradients and spatial distance as species distribution drivers is a crucial topic of community ecology. Here, we sampled wetland plant communities at 779 plots from 52 sites and measured 12 key functional traits of 52 plant species in Poyang Lake, China. Using the generalized dissimilarity model (GDM), we examined which environmental variables and geographic distances best predicted the variations in community turnover (Simpson dissimilarity coefficients) at two spatial scales (i.e., plot and site) and compared the turnover patterns between species and functional approaches. We found that both species and functional turnover were typically higher at plot than site scale and that species turnover were higher than functional turnover across the studied scales. At plot scale, the GDM results showed that the best predictor of species turnover was elevation followed by soil moisture and geographic distance, while geographic distance was the best predictor at site scale. However, functional turnover was weak or showed no remarkable responses to either environmental variables or geographic distance. Notably, the communities showed a very high functional redundancy with slow shifts across the environmental gradients at both scales studied. This strongly suggests that most species were functionally redundant and that species replacement across environmental gradients and the two studied spatial scales is restricted to functionally identical species in the Poyang Lake wetland. Our results demonstrated that the coupling between plant species and functional turnover is reduced, which may allow the wetland plant community to maintain its ecosystem functioning when subjected to water level fluctuations. © 2020 Elsevier B.V.

语种： 英文

作者： Duan, Liangxia;Sheng, Hao;Yuan, Hong;Zhou, Qing;Li, Zhenwei*

期刊： Geoderma,2021年389:114953 ISSN：0016-7061

通讯作者： Li, Zhenwei

作者机构： [Zhou, Qing; Yuan, Hong; Sheng, Hao; Duan, Liangxia] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Li, Zhenwei] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China.

通讯机构： [Li, Zhenwei] C;Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China.

关键词： Granite;Le Bissonnais' method;Slate;Soil erosion;Yoder's method

摘要： Soil aggregate stability is one of the most important indicators of soil structure and soil degradation vulnerability, and it is the dominant factor controlling hillslope soil erosion in the subtropical Ultisols region of China. However, few studies have investigated the synergistic effects of land use conversion and lithology on soil aggregate stability, especially in subtropical Ultisols region of China where soil erosion is a serious concern. Soil samples from 0 to 100 cm depth at increments of 20 cm were collected from four typical land use types (natural forest, artificial forest, orchard, and cropland) and two lithologies (granite and slate) to determine soil aggregate stability using the Le Bissonnais' and Yoder' methods on Ultisols from subtropical China. Results indicated that both land use type and lithology significantly influenced the soil aggregate stability. Specifically, in different soil depths of 0–100 cm, land use changes from natural forest to orchard and cropland significantly decreased the aggregate stability, thus increasing soil erodibility. Following the conversion of natural forest to artificial forest generally enhanced soil stability and resistance to flowing water erosion. For lithology, the slate soil was more resistant to erosion than granite soil. The generalized linear model can explain >60% of the total variation in soil aggregate stability, and the effect of land use on aggregate stability was greater than lithology. Compared with the Yoder' wet-sieving method, the Le Bissonnais method was better at characterizing soil aggregate stability among land uses and lithology, and therefore should be considered as a preferred method in future studies in the subtropical Ultisols region of China. © 2021 Elsevier B.V.

语种： 英文

作者： Cao, Ruoyu;Qin, Pufeng;Li, Wenjie;Shang, Cui;Chai, Youzheng;...

期刊： Applied Microbiology and Biotechnology,2021年105(16-17):6451-6462 ISSN：0175-7598

通讯作者： Chen, Anwei(A.Chen@hunau.edu.cn)

作者机构： [Cao, Ruoyu; Qin, Pufeng; Li, Wenjie; Shang, Cui; Jin, Doudou; Chen, Anwei; Chai, Youzheng] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

通讯机构： [Chen, Anwei] C;College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, People's Republic of China. A.

关键词： Cadmium;Calcium;Hydrogen sulfide;Resistance;White-rot fungus;Heavy metals

摘要： Hydrogen sulfide (H2S), an emerging gas transmitter, has been shown to be involved in multiple intracellular physiological and biochemical processes. In this study, the effects of hydrogen sulfide coupled with calcium on cadmium removal and resistance in Phanerochaete chrysosporium were examined. The results revealed that H2S enhanced the uptake of calcium by P. chrysosporium to resist cadmium stress. The removal and accumulation of cadmium by the mycelium was reduced by H2S and Ca2+ pretreatment. Moreover, oxidative damage and membrane integrity were alleviated by H2S and Ca2+. Corresponding antioxidative enzyme activities and glutathione were also found to positively respond to H2S and Ca2+, which played an important role in the resistance to cadmium-induced oxidative stress. The effects of hydroxylamine (HA; a hydrogen sulfide inhibitor) and ethylene glycol-bis-(2-aminoethylether)-N,N,N′,N′-tetraacetic acid (EGTA; a calcium chelator) toward H2S and Ca2+ and their cross-interactions confirmed the positive roles and the potential crosstalk of H2S and Ca2+ in cadmium stress resistance. These findings imply that the protective effects of H2S in P. chrysosporium under cadmium stress may occur through a reduction in the accumulation of cadmium and promotion of the antioxidant system, and the H2S-regulated pathway may be associated with the intracellular calcium signaling system. Key points • Altered monoterpenoid tolerance mainly related to altered activity of efflux pumps. • Increased tolerance to geranic acid surprisingly caused by decreased export activity. • Reduction of export activity can be beneficial for biotechnological conversions. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

语种： 英文

作者： He Shao-fang;Shen Lu-ming;Xie Hong-xia

期刊： 光谱学与光谱分析,2021年41(6):1905-1911 ISSN：1000-0593

通讯作者： Xie, Hong-Xia(xiehongxia136@sina.com)

作者机构： [Shen Lu-ming; He Shao-fang] Hunan Agr Univ, Coll Informat & Intelligence, Changsha 410128, Peoples R China.;[Xie Hong-xia] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

通讯机构： [Xie, H.-X.] C;College of Resources & Environment, China

关键词： 有机质;高光谱;生成式对抗网络;交叉验证岭回归;BP神经网络

摘要： 已有的土壤有机质含量估测模型大多以光谱特征波段、 线性和非线性模型为基础, 较少考虑通过拓展样本数据建模集来提高模型的估测能力。 为进一步提高土壤有机质高光谱反演模型估测精度, 提出利用生成式对抗网络(GAN)合成伪高光谱数据和有机质含量的动态估测模型。 选取湖南省长沙市及周边区域的水稻田为研究对象, 采集土样和实测高光谱数据(350~2 500 nm), 室内化学测定有机质含量。 以高光谱数据和有机质含量为基础, 利用生成式对抗网络生成等量新数据, 结合原始数据建模集组成增强建模集。 在GAN正式训练中, 每轮训练完成后, 设置4个观测点(对应增强建模集中含50, 100, 150和239个生成样本), 动态构建交叉验证岭回归(RCV)、 偏最小二乘回归(PLSR)和BP神经网络(BPNN)土壤有机质含量估测模型(分别简称GAN-RCV, GAN-PLSR和GAN-BPNN), 并在相同测试集上实施模型评估。 实验结果表明: (1)原始数据建模集上拟合的估测模型中, 交叉验证岭回归表现最佳, 决定系数(R2)和均方根误差(RMSE)分别为0.831 1和0.189 6; (2)GAN的150轮正式训练中, 增强建模集上动态构建的GAN-RCV, GAN-PLSR和GAN-BPNN模型性能显著提高, 具体表现为: GAN-RCV的R2取得最大值0.890 9(RMSE 0.153 7)、 最小值0.850 5 (RMSE 0.18)与平均值0.868 7(RMSE 0.168 6), 最大R2比建模集上拟合的RCV提高了7.2%(RMSE降低了18.9%), GAN-PLSR获得R2最大值0.855 4(RMSE 0.176 9)、 最小值0.727 0 (RMSE 0.243 2)与平均值0.780 1 (RMSE 0.217 7), 最大R2比建模集上拟合的PLSR提高了20.6%(RMSE降低了29.5%), GAN-BPNN表现最佳, R2取得最大值0.905 2(RMSE 0.143 3)、 最小值0.801 7(RMSE 0.207 3)与平均值0.868 1(RMSE 0.168 6), 最大R2比建模集上拟合的BPNN提高了30.8%(RMSE降低了44.5%); (3)随着增强建模集中生成样本数量增加, 模型精度提升效果呈先升后降趋势, 4个观测点中第3个观测点的模型性能提升最显著。 充分的实验表明: 基于GAN动态构建的有机质含量估测模型显著改善了模型预测性能。 依据测试集上的评估结果, 可择优使用最佳模型进行后续土壤有机质含量估测。 In the previous study of the estimation model of soil organic matter content, most models were based on the feature bands, linear and non-linear empirical models rarely explored the ability promotion using an extended modeling dataset. To further improve the performance of the estimation model, it proposed a dynamic estimation model of soil organic matter content using generative adversarial networks (GAN) to generate the pseudo hyperspectral and organic matter content. Paddy soil samples and hyperspectral data (350~2 500 nm) were collected from Changsha and its surrounding areas of Hunan Province, and the organic matter content was monitored chemically. Based on these data, equivalent new samples were generated by GAN and combined with the modeling set to form anenhanced modeling set. After completing each epochformal training of GAN, the prediction models of soil organic matter content were dynamically constructed using cross-validation ridge regression (RCV), partial least squares regression(PLSR) and BP neural network (BPNN) on four observation points (corresponding 50, 100, 150 and 239 generated samples in enhanced modeling set) (the abbreviation of models were GAN-RCV, GAN-PLSR and GAN-BPNN). The experimental results showed that: (1) Among the estimation models fitted on modeling set of the origin data, RCV was the best-performing model, whose determination coefficient (R2) and root square error (RMSE) were 0.831 1 and 0.189 6; (2) In the 150 epochs formal training of GAN, the performance of GAN-RCV, GAN-PLSR and GAN-BPNN dynamically constructed on the enhanced modeling set were significantly improved, specific performances: R2 of GAN-RCV obtained the maximum 0.890 9 (RMSE 0.153 7), minimum 0.850 5 (RMSE 0.18) and mean 0.868 7 (RMSE 0.168 6), the maximum R2 increased by 7.2% (RMSE decreased by 18.9%) compared with RCV fitted on the modeling dataset, R2 of GAN-PLSR had the maximum 0.855 4 (RMSE 0.176 9), minimum 0.727 0 (RMSE 0.243 2) and mean 0.780 1 (RMSE 0.217 7), the maximum R2 increased by 20.6% (RMSE decreased by 29.5%) than PLSR constructed on the modeling dataset, GAN-BPNN performed best, whose R2 had the maximum 0.905 2(RMSE 0.143 3), minimum 0.801 7(RMSE 0.207 3) and mean 0.868 1(RMSE 0.168 6), the maximum R2 increased by 30.8%(RMSE decreased by 44.5%) comparing BPNN fitted on the modeling set; (3) With the increase of the number of generated samples in the enhanced modeling dataset, the improvement effect of model accuracy showed a trend of increasing first and then decreasing, and among the four observation points, the model constructed on the third had the most significant performance improvement. Sufficient experiments showed that the dynamic estimation model based on GAN improved the performance effectively. According to the evaluation results on the test set, the optimum model could be used to predict the soil organic matter content in the follow-up application.

语种： 中文

作者： Xu, Zhangyi;Xiang, Yujia;Zhou, Hao;Yang, Jian;He, Yangzhou;...

期刊： Environmental Pollution,2021年272:115968 ISSN：0269-7491

通讯作者： Zhou, Yaoyu

作者机构： [Zhu, Ziqian; Xu, Zhangyi; Zhou, Hao; Xiang, Yujia; Yang, Jian; Zhou, Yaoyu; He, Yangzhou] HunanAgr Univ, Coll Resources & Environm, Hunan Int Sci & Technol Cooperat Base Agr Typ Pol, Changsha 410128, Peoples R China.

通讯机构： [Zhou, Yaoyu] H;HunanAgr Univ, Coll Resources & Environm, Hunan Int Sci & Technol Cooperat Base Agr Typ Pol, Changsha 410128, Peoples R China.

关键词： Antibiotic contaminant;Aqueous system adsorption;Biochar;Biowaste recycle;Site energy distribution

摘要： The primitive biochar (BC) and NiFe2O4/biochar composites (NFBC), biological adsorbents prepared from vinasse wastes, possess the environmental application in levofloxacin (LEV) removal. In this study, the efficient adsorption of LEV onto biochar synthesized by pyrolysis of vinasse wastes from aqueous environment was investigated. The influencing factors (i.e., pH, reaction time, and temperature) of adsorption process were also well studied. The results indicated that the maximum adsorption capacities of both BC and NFBC were occurred in mildly acidic condition (pH 6). In addition, the biochar adsorption capacities were obviously increased in higher temperature (25–45 °C). The chemistry adsorption and monolayer homogeneous dominated adsorption process of LEV onto BC and NFBC. The adsorption process was spontaneous and endothermic by thermodynamic analysis. The SEDA (site energy distribution analysis) explained that the adsorption effectivity increased by increasing site energy of biochar surface. The SEDA revealed the more energy heterogeneity in NFBC, fitting the characterization result of Fourier-transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The electron-donor-acceptor (EDA) interactions and hydrogen bonds is suggested as the major adsorption mechanism. And as for the adsorption of the various biowaste recycled synthetic, this study can be referred in discussion of performance analysis and optimal condition. © 2020 Elsevier Ltd

语种： 英文

作者： Nasir, Muhammad Jamal;Khan, Sajjad;Ayaz, Tehreem;Khan, Amir Zeb;Ahmad, Waqas;...

期刊： Environmental Earth Sciences,2021年80(13):1-13 ISSN：1866-6280

通讯作者： Ayaz, Tehreem(tehreemayaz17301@yahoo.com)

作者机构： [Nasir, Muhammad Jamal; Khan, Sajjad] Univ Peshawar, Dept Geog, Peshawar 25120, Pakistan.;[Ayaz, Tehreem; Lei, Ming] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.;[Khan, Amir Zeb] Pak Austria Fachhochhule, Inst Appl Sci & Technol, Mang 22620, Haripur, Pakistan.;[Ahmad, Waqas] Natl Univ Sci & Technol NUST, Inst Geog Informat Syst IGIS, Islamabad 44000, Pakistan.

通讯机构： [Tehreem Ayaz] C;College of Resource and Environment, Hunan Agricultural University, Changsha, People’s Republic of China

关键词： Groundwater potentiality;Remote Sensing (RS);Geographical Information Systems (GIS);Weighted overlay;Multi-influencing Factor (MIF) approach

摘要： This study evaluated the spatial distribution of groundwater potential zones in Kabul Province, Afghanistan using the geospatial multi-influencing factor approach. The influencing parameters employed for the assessment of groundwater potential zones were land slope, geology, soil type, land use/land cover, lineament density, rainfall, and drainage density. The subclasses within each influencing parameter were subdivided based on their influence on groundwater potential as major, minor, and no effect, and were subsequently assigned a score value. The combined score value of these parameters was used for calculating their relative weights. The delineated groundwater potential zones were classified in four groups, i.e., poor, moderate, good, and very good. The study results revealed that zones with a very good groundwater potential covered an area of 355 km2 (2% of the total area), good 1524 km2 (20%), moderate 2251 km2 (73%), and poor 477 km2 (5%). The study concluded that the geospatial-assisted multi-influencing factor approach was very useful and efficient technique for the assessment of groundwater potential zones and can be effectively employed to enhance the conceptual understanding of groundwater resources of Kabul Basin, Afghanistan. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

语种： 英文

作者： Peng, Yutao;Tang, Hongmei;Yao, Bin;Gao, Xing;Yang, Xiao;...

期刊： Chemical Engineering Journal,2021年414:128800 ISSN：1385-8947

通讯作者： Yang, Xiao(yangx@igsnrr.ac.cn)

作者机构： [Peng, Yutao] China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China.;[Yao, Bin; Tang, Hongmei; Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Zhou, Yaoyu; Peng, Yutao] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hung Hom, Hong Kong, Peoples R China.;[Yang, Xiao] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China.;[Gao, Xing] Tongji Univ, Sch Environm Sci & Engn, State Key Lab Pollut Control, Shanghai 200092, Peoples R China.

通讯机构： [Xiao Yang] K;[Yaoyu Zhou] C;College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China<&wdkj&>Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China<&wdkj&>Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China

关键词： Activation;Advanced oxidation processes;Magnetic ferrite;Organic pollutants;Peroxymonosulfate

摘要： In recent ten years, the sulfate radical-based advanced oxidation processes (AOPs) have been paid increasing attention due to their superior performance and adaptability in decomposition of organic pollutants. The spinel ferrites (SFs) and spinel ferrite-based composites (SFCs) coupling with peroxymonosulfate (PMS) for heterogeneous catalysis is an efficient way to decompose the organic pollutants by generating reactive sulfate radicals. This article reviewed the recent progress on diverse heterogeneous ferrites (Ni/Cu/Zn/Co/Mn-ferrites) and ferrite composites catalysts (i.e., (Ni/Cu/Zn/Co/Mn-ferrites supported by various substrates) for PMS activation. Besides, impacting factors, synergistic methods of SFs/SFCs-PMS systems in organic decomposition and potential applications were also considered and discussed. Eventually, we proposed the future recommendations and challenges related to SFs and SFCs catalysts, heterogeneous SFs/SFCs-PMS systems and their possible applications in wastewater purification. © 2021 Elsevier B.V.

语种： 英文

作者： Zhang, Manyun;Niu, Yun;Wang, Weijin;Bai, Shahla Hosseini;Luo, Handong;...

期刊： Applied Microbiology and Biotechnology,2021年105(23):8907-8920 ISSN：0175-7598

通讯作者： Xu, Zhihong;Guo, Xiaomin

作者机构： [Zhang, Manyun] Hunan Agr Univ, Coll Resources & Environm, Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La, Changsha 410128, Peoples R China.;[Xu, Zhihong; Tang, Li; Wang, Weijin; Bai, Shahla Hosseini; Niu, Yun; Zhang, Manyun] Griffith Univ, Ctr Planetary Hlth & Food Secur, Sch Environm & Sci, Brisbane, Qld 4111, Australia.;[Chen, Fusheng; Xu, Zhihong; Niu, Yun; Luo, Handong; Guo, Xiaomin] Jiangxi Agr Univ, Coll Forestry, Jiangxi Key Lab Silviculture, Nanchang 330045, Jiangxi, Peoples R China.;[Niu, Yun] Southwest Forestry Univ, Key Lab Forest Resources Conservat & Utilizat Sou, Minist Educ, Kunming 650224, Yunnan, Peoples R China.

通讯机构： [Xu, Zhihong] G;[Xu, ZH; Guo, XM] J;Griffith Univ, Ctr Planetary Hlth & Food Secur, Sch Environm & Sci, Brisbane, Qld 4111, Australia.;Jiangxi Agr Univ, Coll Forestry, Jiangxi Key Lab Silviculture, Nanchang 330045, Jiangxi, Peoples R China.

关键词： Mineral fertilization;Forest plantation;CO2 emissions;Shotgun metagenomic sequencing;Microbial community and function

摘要： Abstract: Carbon dioxide (CO2) emissions from forest ecosystems originate largely from soil respiration, and microbial heterotrophic respiration plays a critical role in determining organic carbon (C) stock. This study investigated the impacts of successive nitrogen (N) and phosphorus (P) fertilization after 9years on soil organic C stock; CO2 emission; and microbial biomass, community, and function in a Chinese fir plantation. The annual fertilization rates were (1) CK, control without N or P fertilization; (2) N50, 50kgNha−1; (3) N100, 100kgNha−1; (4) P50, 50kgP ha−1; (5) N50P50, 50kgNha−1 + 50kgPha−1; and (6) N100P50, 100kgNha−1 + 50kgPha−1. The N100P50 treatment had the highest cumulative soil CO2 emissions, but the CK treatment had the lowest cumulative soil CO2 emissions among all treatments. The declines of soil organic C (SOC) after successive 9-year fertilization were in the order of 100kgNha−1year−1 &gt; 50kgNha−1year−1 &gt; CK. Compared to the CK treatment, successive N fertilization significantly changed soil microbial communities at different application rates and increased the relative gene abundances of glycoside hydrolases, glycosyl transferases, carbohydrate-binding modules, and polysaccharide lyases at 100kgNha−1year−1. Relative to P fertilization alone (50kgPha−1year−1), combined N and P fertilization significantly altered the soil microbial community structure and favored more active soil microbial metabolism. Microbial community and metabolism changes caused by N fertilization could have enhanced CO2 emission from heterotrophic respiration and eventually led to the decrease in organic C stock in the forest plantation soil. Key points: • N fertilization, alone or with P, favored more active microbial metabolism genes. • 100kgNha−1 fertilization significantly changed microbial community and function. • N fertilization led to a “domino effect” on the decrease of soil C stock. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

语种： 英文

作者： Chen, Hong;Huang, Rong;Wu, Jun;Zhang, Wenzhe;Han, Yunping;...

期刊： Bioresource Technology,2021年320:124303 ISSN：0960-8524

通讯作者： Xiao, Benyi

作者机构： [Wu, Jun; Huang, Rong; Chen, Hong; Yu, Guanlong] Changsha Univ Sci & Technol, Key Lab Dongting Lake Aquat Ecoenvironm Control &, Sch Hydraul Engn, Changsha 410004, Peoples R China.;[Wu, Jun; Han, Yunping; Xiao, Benyi; Chen, Hong; Zhang, Wenzhe] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China.;[Han, Yunping; Xiao, Benyi; Zhang, Wenzhe] Univ Chinese Acad Sci, Beijing 100049, Peoples R China.;[Wang, Dongbo] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Peoples R China.;[Zhou, Yaoyu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

通讯机构： [Xiao, Benyi] C;Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China.

关键词： Anaerobic co-digestion;Biohythane;Pig manure;Rice straw;Thermophilic-mesophilic

摘要： To investigate biohythane production and microbial behavior during temperature-phased (TP) anaerobic co-digestion (AcD) of rice straw (RS) and pig manure (PM), a mesophilic-thermophilic (M1-T1) AcD system and a thermophilic-mesophilic (T2-M2) AcD system were continuously operated for 95 days in parallel. The maximal ratio (8.44%v/v) of produced hydrogen to methane demonstrated the feasibility of biohythane production by co-digestion of RS and PM. T2-M2 exhibited higher hydrogen (16.68 ± 1.88 mL/gVS) and methane (197.73 ± 11.77 mL/gVS) yields than M1-T1 (3.08 ± 0.39 and 109.03 ± 4.97 mL/gVS, respectively). Methanobrevibacter (75.62%, a hydrogenotrophic methanogen) dominated in the M1 reactor, resulting in low hydrogen production. Hydrogen-producing bacteria (Thermoanaerobacterium 32.06% and Clostridium_sensu_stricto_1 27.33%) dominated in T2, but the abundance of hydrolytic bacteria was low, indicating that hydrolysis could be a rate-limiting step. The thermophilic acid-producing phase provided effective selective pressure for hydrogen-consuming microbes, and the high diversity of microbes in M2 implied a more efficient pathway of methane production. © 2020 Elsevier Ltd

语种： 英文

作者： Zhang, Jiachao;He, Yuewei;Fang, Yingchun;Zhao, Keqi;Wang, Nanyi;...

期刊： Adsorption Science & Technology,2021年2021 ISSN：0263-6174

通讯作者： Zhang, Jiachao(jiachao.zhang@163.com);Yang, Yuan(yangyuan@hunau.edu.cn)

作者机构： [He, Yuewei; Zhao, Keqi; Yang, Yuan; Wang, Nanyi; Zhou, Yaoyu; Zhang, Jiachao; Luo, Lin] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[He, Yuewei; Zhang, Jiachao; Fang, Yingchun; Luo, Lin] Hunan Kaidi Engn Technol Co LTD, Changsha 410000, Hunan, Peoples R China.

通讯机构： [Zhang, J.; Yang, Y.] C;College of Resources and Environment, China

摘要： Silicon fertilizer and biochar have been widely used to remediate soil contaminated by heavy metals. The effects and mechanism of silicon fertilizer and biochar addition on the heavy metal availability, soil biological properties, and microbial community characteristics need further study in soils contaminated by heavy metals. Therefore, this research determined how silicon fertilizer, biochar, and their combined using affected microbial communities related with nitrogen and phosphorus cycling. The abundance and composition of the microbial community were evaluated by quantitative PCR and phospholipid fatty acid analysis, respectively. Results showed that silicon fertilizer and biochar addition significantly changed soil properties, including pH, total organic carbon, ammonium, nitrate. The Cd and Zn speciation were significantly reduced by silicon fertilizer, biochar, and their integrated application. Microbial community abundance and structure were also significantly changed. Principal component analysis shows that the difference in soil microbial community structure is the most obvious under the combined addition of biochar, silicon fertilizer and biochar. In addition, the results of fluorescence quantitative PCR showed that with biological addition, the number of soil bacteria was significantly reduced. This study reveals the influence of silicon fertilizer and biochar on bacterial and fungal communities in heavy metal soils and the effect of soil heavy metal availability. © 2021 Jiachao Zhang et al.

语种： 英文

作者： Wu, Ai-Ping*;Ye, Shi-Yun;Yuan, Jin-Rui;Qi, Liang-Yu;Cai, Zheng-Wu;...

期刊： Ecological Indicators,2021年121:107069 ISSN：1470-160X

通讯作者： Wu, Ai-Ping;Chu, Zhao-Sheng

作者机构： [Wu, Ai-Ping; Yuan, Jin-Rui; Liu, Li; Qi, Liang-Yu; Ye, Shi-Yun; Cai, Zheng-Wu; Zhong, Wen] Hunan Agr Univ, Coll Resources & Environm, Ecol Dept, Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La, Changsha 410128, Peoples R China.;[Chu, Zhao-Sheng; Ye, Bi-Bi; Yuan, Jing] Chinese Res Acad Environm Sci CRAES, Res Ctr Lake Ecol & Environm, State Key Lab Environm Criteria & Risk Assessment, State Environm Protect Key Lab Lake Pollut Contro, Beijing, Peoples R China.;[Yuan, Jin-Rui; Xie, Yong-Hong] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410128, Peoples R China.;[Wang, Yan-Hong] Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China.

通讯机构： [Wu, Ai-Ping] H;[Chu, Zhao-Sheng] C;Hunan Agr Univ, Coll Resources & Environm, Ecol Dept, Hunan Prov Key Lab Rural Ecosyst Hlth Dongting La, Changsha 410128, Peoples R China.;Chinese Res Acad Environm Sci CRAES, Res Ctr Lake Ecol & Environm, State Key Lab Environm Criteria & Risk Assessment, State Environm Protect Key Lab Lake Pollut Contro, Beijing, Peoples R China.

关键词： Species richness;Productivity;Competition;Macrophyte;Two-dimensional space view;Three-dimensional space view;Diversity loss;Eutrophication

摘要： The relationship between diversity and productivity (DPR) is a hot topic in ecology, whereas most evidence comes from studies of manipulated terrestrial ecosystems or from two-dimensional space views. In this study, we determined DPR of submerged plants in a natural mesotrophic lake, Lake Erhai, along its water depth in 2013 and 2019. Our results demonstrated that the community productivity was significantly negatively correlated with plant biodiversity from a three-dimensional space view (all of the water depths) in Lake Erhai due to strong competition effects among submerged species. However, DPR patterns at each water depth (from two-dimensional space views) were various, which might be because these DPR patterns were disturbed by many biotic and abiotic factors or their interplays. Both total biomass and biomass of dominant species negatively correlated with species richness. Moreover, total biomass was positively correlated with biomasses of dominant species. Accordingly, we can presume that DPR patterns are largely determined by relationships between biomasses of dominant species and biodiversity in our study. Our results showed that species number in 2019 was generally smaller than that in 2013 and submerged species were migrating from deep water to shallow water with lake eutrophication in such a short time. Accordingly, measurements should be conducted quickly to control the eutrophication process of Lake Erhai to improve its multiple valuable functions and services. © 2020 Elsevier Ltd

语种： 英文

作者： Peng, Lu;Mao, Qiming;Cao, Lin-Ying;Sun, Hailong;Xie, Xiande*;...

期刊： Adsorption Science & Technology,2021年2021 ISSN：0263-6174

通讯作者： Xie, Xiande;Luo, Shuang

作者机构： [Xie, Xiande; Peng, Lu; Mao, Qiming; Xie, XD; Luo, S; Cao, Lin-Ying; Luo, Shuang] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Peng, Lu] Jishou Univ, Coll Biol & Environm Sci, Jishou 416000, Peoples R China.;[Sun, Hailong] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China.

通讯机构： [Xie, XD; Luo, S] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

摘要： The eco-restoration was a very effective measure to solve the problem of environmental pollution caused by the exposed mine surface in the stone coal mine site. In this study, the dominant plant, Indigofera amblyantha Craib, was well adapted to the eco-restoration in stone coal mining area. The changes of nutrient elements, pH, heavy metals in substrate material, the biological concentration/transfer factor, and the distribution and diversity of bacteria and fungi in rhizosphere soil were investigated. The results show that the plant communities help slow down the loss of nutrient elements and the increase of the concentrations of heavy metals in the eco-restoration process. The Indigofera amblyantha Craib had the advantaged ability to enrich and transfer Cd, Cu, Mn, and its diversity index of microbial communities in rhizosphere soils was higher than that of other quadrats. These excellent properties found in this work help reveal the insight into the adaptability of Indigofera amblyantha Craib in the eco-restoration of stone coal mines. It is valuable to evaluate Indigofera amblyantha Craib for eco-restoration engineering of stone coal mine and extend the application in heavy metal contaminated sites. Copyright © 2021 Lu Peng et al.

语种： 英文

作者： Zhang, Yang;Ding, Chunxia;Gong, Daoxin*;Deng, Yaocheng*;Huang, Ying;...

期刊： Environmental Technology & Innovation,2021年24:102026 ISSN：2352-1864

通讯作者： Gong, Daoxin;Deng, Yaocheng

作者机构： [Wang, Yongchang; Zhang, Yang; Deng, Yaocheng; Tang, Rongdi; Gong, Daoxin; Su, Long; Xiong, Sheng; Huang, Ying; Gong, DX; Zheng, Jiangfu] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Ding, Chunxia] Hunan Agr Univ, Chem & Mat Sci, Changsha 410082, Peoples R China.

通讯机构： [Gong, DX; Deng, YC] H;Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.

关键词： Antimony pollution;Environmental chemical behavior;Detection and treatment;Toxicity;Metalloid

摘要： Antimony (Sb), a toxic metalloid element, is located in the Group VA of the fifth period of the periodic table of elements. At present, with the wide use of antimony containing products in the world and the corresponding mining activities, a large number of antimony containing waste generated in these processes has also been released to the environment, resulting in antimony pollution has become a problem that cannot be ignored. People exposed to high concentrations of antimony will produce a series of health risks, which may lead to vomiting, diarrhea, rash and other diseases, and even cancer. Antimony in the environment comes from natural processes (ore weathering, volcanic activity) and human activities (mining and smelting, use of antimony containing products, fossil fuel combustion, etc.). Similar to many elements, the toxicity of antimony is closely related to its chemical form, and the toxicity of Sb(III) is much higher than Sb(V). Antimony exists in various chemical forms in the environment (mainly Sb(III) and Sb(V)), and its environmental chemical behavior is easily affected by various environmental factors. Redox conditions can change the chemical form of antimony and affect its migration and transformation in environmental media. Once the antimony minerals are oxidized in contact with the air, antimony will be released in a dissolved state, and then attached to the surface of various solid particles in the tailings in the form of adsorption. It is easy to migrate and diffuse to the surrounding environment under the leaching of surface water, and absorbed by plant roots. In addition, this review also emphasizes the detection methods of antimony, in which the development of combined technology is an increasingly attractive research field in antimony speciation analysis. Finally, we provide several commonly used Sb removal technologies, and critically analyze the remarkable characteristics and removal mechanism of these technologies, hoping to provide reference for the treatment and research of antimony pollution. © 2021 The Authors

语种： 英文

作者： Gao, Xiufang;Jiang, Li;Mao, Yilin;Yao, Bin;Jiang, Peihua

期刊： Adsorption Science & Technology,2021年2021 ISSN：0263-6174

通讯作者： Gao, Xiufang(664039407@qq.com)

作者机构： [Gao, Xiufang] Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Jingzhou, China;[Jiang, Li; Mao, Yilin; Jiang, Peihua] College of Resources and Environment, Yangtze University, Wuhan, China;[Yao, Bin] College of Resources and Environment, Hunan Agricultural University, Changsha;410128, China;[Yao, Bin] 410128, China

通讯机构： [Gao, X.] E;Engineering Research Center of Ecology and Agricultural Use of Wetland, China

摘要： The accumulation of mine tailings on Earth is a serious environmental challenge. The importance for the recovery of heavy metals, together with the economic benefits of precious and base metals, is a strong incentive to develop sustainable methods to recover metals from tailings. Currently, researchers are attempting to improve the efficiency of metal recovery from tailings using bioleaching, a more sustainable method compared to traditional methods. In this work, the research status of using biological leaching technologies to recover heavy metals from tailings was reviewed. Furthermore, CiteSpace 5.7.R2 was used to visually analyze the keywords of relevant studies on biological leaching of tailings to intuitively establish the current research hotspots. We found that current research has made recent progress on influencing factors and microbial genetic data, and innovations have also been made regarding the improvement of the rate of metal leaching by biological leaching combined with other technologies. This is of great significance for the development of bioleaching technologies and industrial production of heavy metals in tailings. Finally, challenges and opportunities for bioleaching provide directions for further research by the scientific community. © 2021 Xiufang Gao et al.

语种： 英文

作者： Lu, Lei;Xu, Feng;Rao, Wenkai;Nie, Ning;Du, Huihui

期刊： Adsorption Science & Technology,2021年2021 ISSN：0263-6174

通讯作者： Du, Huihui(duhuihui@hunau.edu.cn)

作者机构： [Xu, Feng; Rao, Wenkai; Nie, Ning; Du, Huihui; Lu, Lei] Hunan Agr Univ, Coll Resources & Environm, Hunan Engn & Technol Res Ctr Irrigat Water Purifi, Changsha 410128, Peoples R China.

通讯机构： [Du, H.] H;Hunan Engineering and Technology Research Center for Irrigation Water Purification, China

摘要： The mobility of Cd(II) in soils, sediments, and aquatic systems is strongly dependent on adsorption behaviors occurring at the mineral-water interface, and this process may be influenced by the presence of organic phosphorus (OP). In this study, we investigate Cd(II) adsorption onto amorphous aluminum hydroxide (AAH), both in the presence and absence of OP, represented by the widely abundant myo-inositol hexakisphosphate (IHP). Isothermal adsorption experiment coupled with attenuated total reflection Fourier transform infrared (ATR-FTIR) and 1H solid-state NMR spectra were employed. Physiochemical characterization shows that IHP can increase the surface negative charge and the number of surface sites. Isothermal results show that high IHP loading enhances Cd(II) adsorption while no obvious increase is observed at low IHP loading. The overall effect of IHP on Cd(II) sorption depends on the extent of two positive processes, i.e., (1) IHP can form ternary complexes with adsorbed Cd(II) on AAH and (2) IHP can increase the negative surface charge of AAH, and a negative process, i.e., AAH competes with Cd(II) for AAH surface sites. ATR-FTIR results confirm the possible formation of three structurally distinct ternary complexes, i.e., the AAH-IHP-Cd, AAH-Cd-IHP, and AAH-Cd-IHP-Cd. The analysis of 1H solid-state NMR demonstrates that IHP only increases the number of surface OH groups rather than changes their chemical environment and speciation. Cd does not bind to the AAH surface but mainly binds with the OH groups of IHP. All findings of this work suggest that the presence of high dose of OP promotes the retention of Cd(II) in soils, thereby decreasing their bioavailability to biota. © 2021 Lei Lu et al.

语种： 英文

作者： Peng, Lu;Luo, Shuang;Xiong, Lizhi;Sun, Hailong

期刊： Adsorption Science & Technology,2021年2021 ISSN：0263-6174

通讯作者： Xiong, Lizhi(913675863@qq.com)

作者机构： [Peng, Lu; Xiong, Lizhi] College of Biology and Environmental Sciences, Jishou University, Jishou;416000, China;[Luo, Shuang] College of Resources and Environment, Hunan Agricultural University, Changsha;410128, China;[Sun, Hailong] State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu

通讯机构： [Xiong, L.] C;College of Biology and Environmental Sciences, China

摘要： The exposed slopes formed by stone mining had caused serious problems of environmental pollution. The ecological restoration was a very effective measure to solve it. In this study, the Indigofera amblyantha Craib was the dominant species in the ecorestoration during the first two years of ecological restoration, which was based on analyzing the importance value (IV) and diversity indexes of plant species. Meanwhile, the ecorestoration process helps slow down the increase of the concentrations of some heavy metals in the substrate material; however, the changing trends of these metals were not uniform. The root and leaf were the main parts of heavy metal distribution, respectively, corresponding to Pb, Cr, As, Sb, and Ni in root and Cu, Mn, and V in leaf. It confirmed that Indigofera amblyantha Craib had an advantage ability to enrich and transfer Cd, Cu, and Mn obtained from their biological concentration factor (BCF) and biological transfer factor (BTF). The Sb, Cd, and V were the main factors affecting the IV by the redundancy analysis. These fine characters of Indigofera amblyantha Craib help explain it well adapted to the ecorestoration of stone coal mines. The current results are valuable to evaluate and extend the application in ecorestoration engineering of mining areas and other heavy metal-contaminated sites. © 2021 Lu Peng et al.

语种： 英文