期刊：
Handbook of Environmental Chemistry,2023年114:167-187 ISSN：1867-979X
通讯作者：
Zhou, Y.
作者机构：
[Zhi D.; Huang A.; Zhou Y.] Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, College of Resources and Environment, Hunan Agricultural University, Changsha, China
通讯机构：
[Zhou, Y.] H;Hunan International Scientific and Technological Cooperation Base of Agricultural Typical Pollution Remediation and Wetland Protection, China
通讯机构：
[Long, YL ] H;Hunan Agr Univ, Coll Landscape Architecture & Art Design, Changsha, Peoples R China.
摘要：
This study examined villagers’ intention of pro-environmental behavior while supporting the Landcare Policy in China. The research team conducted field surveys of villagers from four famous scenic spots of Cili, which is near the world natural heritage site of the Zhangjiajie natural landscape core area. This area has developed rural tourism, many local villagers rely on tourism to obtain their livelihood income. However, the area is now affected by the environmental remediation policy called Landcare Policy. Cultivated land near the tourist area needs to be repaired, which affects the tourism income of some local villagers. Therefore, local villagers are facing a contradiction between tourism development and environmental protection. The study chose the change in local villagers’ pro-environmental intention as the research content. Then we adopted an empirically validated norm activation model (NAM) from Schwartz, and merged the NAM with the expectancy theory of Vroom, based on 511 valid responses from the field questionnaire surveys, we aimed to develop a theoretical framework for researchers to understand the change in villagers' pro-environmental behaviors, concerning the balance between rural tourism livelihood benefits and environmental remediation behavior. Structural equation modeling was conducted for each index of the responses, the findings showed that the merged model had 76.46% better predictive accuracy of villagers’ pro-environmental intentions than applying Schwartz’s NAM independently. This study found that the motivational force of this new theory significantly influences environmental personal norms due to the joint impact of valence, instrumentality, and expectancy. Villagers with a positive pro-environmental behavior intention expect good tourism benefits and environmental living conditions under the impact of the Landcare policy in rural tourism destinations near the famous natural heritage site.
通讯机构：
[Jie Zhao; Kelin Wang] 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<&wdkj&>Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang, Guangxi 547100, China<&wdkj&>Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China<&wdkj&>Guangxi Industrial Technology Research Institute for Karst Rocky Desertification Control, Nanning, Guangxi 530012, China<&wdkj&>Huanjiang Observation and Research Station for Karst Ecosystems, Chinese Academy of Sciences, Huanjiang, Guangxi 547100, China<&wdkj&>Guangxi Key Laboratory of Karst Ecological Processes and Services, Huanjiang, Guangxi 547100, China
期刊：
Journal of Hazardous Materials,2023年447:130755 ISSN：0304-3894
通讯作者：
Lei, Ming
作者机构：
[Huang, Yayuan; Mensah, Caleb Oppong; Tie, Boqing; Li, Bingyu; Wei, Dongning; Lei, Ming; Zhou, Yimin; Jing, Miaomiao] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Peoples R China.;[Huang, Yayuan; Mensah, Caleb Oppong; Tie, Boqing; Li, Bingyu; Lei, Ming; Zhou, Yimin; Jing, Miaomiao] Hunan Engn & Technol Res Ctr Irrigat Water Purific, Changsha 410128, Peoples R China.;[Long, Jiumei] Hengyang Normal Univ, Coll Life Sci & Environm, Hengyang 421008, Peoples R China.;[Lei, Ming] 1st Nongda Rd, Changsha, Peoples R China.
通讯机构：
[Ming Lei] C;College of Resource and Environment, Hunan Agricultural University, Changsha 410128, PR China<&wdkj&>Hunan Engineering and Technology Research Center for Irrigation Water Purification, Changsha 410128, PR China
摘要：
Arsenic (As) and cadmium (Cd) often coexist in paddy soils. Nano-ferrihydrite colloidal particles (NFPs) are ubiquitous at redox active interfaces of the paddy system and are well-known to play a critical role in controlling the solubility and bio-availability of As and Cd. However, the mutual interaction between As and Cd on NFPs remains elusive. Herein, batch experiments and in-situ spectroscopic techniques were used to investigate the effects of the interaction pattern (sequential reaction) of Cd(II) and As(V) on their respective adsorption on the surfaces of NFPs. Two scenarios were designed: Cd(II) pre-saturated NFPs and As(V) pre-saturated NFPs. Adsorption of Cd(II) was increased by 1.67, 4.08, and 5.21 times in As(V)-saturated NFPs, but only by 1.05, 1.11, and 1.15 times for As(V) in Cd(II)-saturated NFPs. Further, we determined the pH-dependent mutually beneficial cooperation pathways as mediated by the surface of NFPs. At lower pH (5), As(V) tended to promote Cd(II) adsorption, whereas Cd(II) tended to enhance As(V) adsorption at higher pH (> 5.5). X-ray photoelectron spectroscopy (XPS) indicated that both pre-saturated Cd(II) and As(V) altered the local coordination environment of their counterpart ions. Furthermore, results from in-situ attenuated total reflection-Fourier-transform infrared spectroscopy (ATR-FTIR) and second derivative peak shape fitting revealed two types of ternary surface complexes, namely Cd(II)-bridged and As(V)-bridged complexes, which were responsible for the distinct Cd(II) and As(V) co-adsorption behavior on the surface of NFPs under different conditions. These findings help us understand how co-presence Cd and As behave in an iron-rich geological setting and will aid in the development of related restoration technologies.
关键词：
Genes involved in phosphorus transformation;Microbial community;Moso bamboo;Phosphate-solubilizing bacteria;Phosphorus fractions
摘要：
Moso bamboo plantations suffer from phosphorus (P) limitations. A better understanding of soil P cycling contributes to the sustainable management and development of the bamboo forests. In this study, different phosphate-solubilizing bacteria (PSB) were applied to soils to stimulate bamboo growth, and the metagenomics method was employed to investigate the changes in soil microbial communities and relative abundances of functional genes. Meanwhile, soil properties and bamboo biomass and physiological indices were also quantitatively analyzed. The PSB inoculations changed soil P fractions and significantly elevated available P (AP) content by stimulating phosphatase activity and functional genes involved in P-transformation. The PSB inoculations significantly stimulated soil acid phosphatase activities and enhanced the relative abundances of functional genes associated with inorganic P-solubilization and organic P-mineralization. Moreover, increased soil available nutrients were beneficial to the moso bamboo growth, and the bamboo biomass in the different treatments increased by from 32.43 % to 69.04 % compared with the control treatment. Significant increases in root activity, carotenoid, chlorophyll a and total chlorophyll contents after the PSB inoculations also contributed to moso bamboo growth. The PSB strain inoculations shaped soil microbial communities and increased microbial connections. Besides adjusting soil P supplies and functional genes, the PSB also promoted the moso bamboo growth by increasing soil mineral N, AK and bamboo chlorophyll contents and stimulating functional microorganisms. Our study could provide a theoretical basis to improve soil nutrient utilization for moso bamboo with the PSB inoculations.
通讯机构：
[Yuping Zhang; Jiangchi Fei] C;College of Resources and Environment, Hunan Agricultural University, Hunan Provincial Key Laboratory of Farmland Pollution Control and Agricultural Resources Use, Changsha, 410128, China<&wdkj&>National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, Changsha, 410128, China
摘要：
Mulberry is an economically important crop for sericulture in China. Mulberry plantations are shifting inland, where they face high salinity. Arbuscular mycorrhizal fungi (AMF) reportedly enhance mulberry's tolerance to salinity. Here, we assessed if additional adaptive advantages against salinity are provided by sex differences beyond those provided by mycorrhizal symbiosis. In a pot experiment, male and monoecious plants were exposed to three salinity regimes (0, 50, and 200mM NaCl) and two mycorrhiza-suppressed conditions (with or without benomyl application) for more than 16 months. We noticed that salinity alone significantly decreased the mycorrhizal colonization rate, salinity tolerance, K(+) concentrations, and the ionic ratios of all plants. Mycorrhizal association mildly ameliorated the salt-induced detrimental effects, especially for monoecious plants, and sex-specific responses were observed. Meanwhile, both sexes had adopted different strategies to enhance their salinity resistance. Briefly, mycorrhizal monoecious plants exhibited a higher net photosynthetic rate and lower translocation of Na(+) from root to shoot compared with mycorrhizal males under saline conditions. Their salt tolerance was probably due to the Ca(2+)/Na(+) in roots. In comparison, male plants exhibited lower Na(+) acquisition, more Na(+) translocated from root to shoot, higher root biomass allocation, and higher N concentrations under harsh saline conditions, and their salt tolerance was mainly related to the K(+)/Na(+) in their shoots. In conclusion, our results highlight that AMF could be a promising candidate for improving plant performance under highest salinity, especially for monoecious plants. Cultivators must be mindful of applying fungicides, such as benomyl, in saline areas.
通讯机构：
[Qingru Zeng] D;Department of Environmental Science & Engineering, Hunan Agricultural University, Changsha 410128, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
heavy metal;hydrochar;Cd;HCl;sunflower;species
摘要：
The removal of heavy metals is crucial to the utilization of contaminated biomass resources. In this study, we report an efficient process of hydrothermal conversion (HTC) of sunflower straw (Helianthus annuus L.) to remove heavy metals. The effect of different HTC temperatures and concentrations of HCl additives on heavy metal removal efficiency was investigated. The results revealed that increasing the temperature or concentration of HCl promoted the transfer of heavy metals from hydrochar to liquid products during HTC. The heavy metals removed to the liquid products included up to 99% of Zn and Cd, 94% of Cu, and 87% of Pb after hydrothermal conversion with a temperature of 200 degrees C and HCl 2%. The species of heavy metals in hydrochars converted from unstable to stable with an increase in temperature from 160 degrees C to 280 degrees C. The stable fractions of heavy metals in the acidic condition decreased as the acid concentration increased. This aligns well with the high transfer efficiency of heavy metals from the solid phase to the liquid phase under acidic conditions. The FTIR indicated that the carboxy and hydroxy groups decreased significantly as the temperature increased and the concentration of HCl increased, which promoted the degradation of sunflower straw. A scan electron microscope showed that the deepening of the destruction of the initial microstructure promotes the transfer of heavy metals from hydrochars to liquid phase products. This acid-assisted hydrothermal process is an efficient method to treat biomass containing heavy metals.
摘要：
With the development of nanotechnology, nano-pesticides have been developed and show better application effects than traditional pesticides, which have a good development prospect. Copper hydroxide nanoparticles (Cu(OH)(2) NPs) are one of the specific fungicides. However, there is still no reliable method to evaluate their environmental processes, which is essential for the broad application of new pesticides. Since soil is a vital link between pesticides and crops, this study took linear and slightly soluble Cu(OH)(2) NPs as the research object and established a method to quantitatively extract Cu(OH)(2) NPs from the soil. Five essential parameters in the extraction process were optimized first, and then the extraction effect of this optimal method was further tested under different nanoparticles and soil conditions. The optimal extraction method was determined, including (i) Dispersant: 0.2% carboxymethyl cellulose (CMC) with a molecular weight of 250,000; (ii) Mixing conditions of soil and dispersant: water bath shaking for 30min, water bath ultrasonication for 10min (energy of the ultrasonication=6kJ/ml); (iii) Phase separation conditions: settlement for 60min; (iv) Solid-to-liquid ratio: 1:20; (v) 1 extraction cycle. After optimization, 81.5% of the supernatant was Cu(OH)(2) NPs, and 2.6% was dissolved copper ions (Cu(2+)). This method showed good applicability to different concentrations of Cu(OH)(2) NPs and different farmland soils. It also showed significant differences in the extraction rates of copper oxide nanoparticles (CuO NPs), Cu(2+), and other copper sources. The addition of a small amount of silica was confirmed to improve the extraction rate of Cu(OH)(2) NPs. The establishment of this method lays the foundation for the quantitative analysis of nano-pesticides and other non-spherical and slightly soluble nanoparticles.
作者机构：
[Lobato-de Magalhaes, Tatiana] Univ Autonoma Queretaro, Fac Nat Sci, Santiago De Queretaro 76230, Mexico.;[Tapia-Grimaldo, Julissa; Murphy, Kevin] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland.;[Davidson, Thomas A.] Aarhus Univ, Dept Ecosci, Lake Grp, DK-8600 Silkeborg, Denmark.;[Molina-Navarro, Eugenio] Univ Alcala, Dept Geol Geog & Environm, Madrid 28802, Spain.;[Wood, Kevin A.] Wildfowl & Wetlands Trust WWT, Slimbridge GL2 7BT, Glos, England.
通讯机构：
[Tatiana Lobato‑de Magalhães] F;Faculty of Natural Sciences, Universidad Autónoma de Querétaro, Santiago de Querétaro, Mexico
关键词：
Ancient vicariance;Anthropochory;Invasiveness;Long-distance movement;Plant distribution;Zoochory
摘要：
No previous study has examined the large-scale distributional drivers of the entire global pool of 3,499 macrophyte species, despite the obvious importance of this for understanding the macroecology of these plants. To assess the hypothesis that natural rather than human-related transfer vectors act as the primary long-distance drivers of global movement of aquatic macrophytes, we analysed current macrophyte species distributions in relation to a set of human-related and natural transfer vectors. Most macrophytes (2,492 species: 71.2% of the global total) are endemic to a single ecozone, and generally lack the various functional adaptations needed for successful long-distance propagule transport. Such traits are, however, common in the 1,007 (28.8%) species native in > 1 ecozone. In total, 779 species (22.3%) are introduced, naturalised or invasive (I species) in one or more ecozones outwith their native range. The proportion of I species varies between ecozones and is best predicted by annual temperature and longitude. A migratory bird transfer vector and climatic variables strongly predict global native macrophyte species occurrence. Some native species of Miocene origin (or older) may have had their world distribution influenced by ancient vicariance events, while inter-ecozone hydrochory and Late Quaternary climate change are also relevant factors influencing a few species.
摘要：
为保证剁椒罐头的质量安全,将危害分析与关键控制点(hazard analysis and critical control point,HACCP)体系引入剁椒罐头生产过程中,探析各环节可能存在的危害,确定原料验收、发酵...展开更多 为保证剁椒罐头的质量安全,将危害分析与关键控制点(hazard analysis and critical control point,HACCP)体系引入剁椒罐头生产过程中,探析各环节可能存在的危害,确定原料验收、发酵、杀菌3个关键控制点,并确定其关键限值,制定预防措施,建立监控程序,以期用较小代价最大程度地确保产品质量安全性。结果发现,HACCP体系应用后,剁椒罐头的质量明显提升,且产品风味更加稳定。收起
作者机构：
[Yan, Binghua; Zhou, Jun; Liang, Jialin; Zhao, Jun; Xu, Suyun; Tyagi, R. D.; Wong, Jonathan W. C.; Luo, Liwen] Hong Kong Baptist Univ, Inst Bioresource & Agr, Dept Biol, Hong Kong, Peoples R China.;[Yan, Binghua] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China.;[Xu, Suyun] Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China.;[Zhou, Jun] Nanjing Tech Univ, Fac Biotechnol & Pharmaceut Engn, Nanjing 211816, Peoples R China.;[Tyagi, R. D.; Wong, Jonathan W. C.] Huzhou Univ, Sch Technol, Huzhou 313000, Peoples R China.
通讯机构：
[Jonathan W.C. Wong] I;Institute of Bioresource and Agriculture, Department of Biology, Hong Kong Baptist University, Hong Kong SAR, China<&wdkj&>School of Technology, Huzhou University, Huzhou 313000, China
