作者机构：
[Zhang, Wei; Wang, Kelin; Liu, Xiajiao; Xiao, Shuangshuang] Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China.;[Chen, Wurong; Xiao, Shuangshuang] Nanning Normal Univ, Guangxi Key Lab Earth Surface Proc & Intelligent, Nanning 530001, Peoples R China.;[Liu, Xiajiao] Univ Chinese Acad Sci, Beijing 100039, Peoples R China.;[Ye, Yingying] Hunan Agr Univ, Coll Resources & Environm, Changsha 410125, Peoples R China.
通讯机构：
[Kelin Wang] K;Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Tillage leads to rapid loss of soil nitrogen (N) over a short period of time in karst areas. N leaching is the primary pathway of soil N loss and therefore is key to understanding the mechanisms of N loss induced by tillage. However, the factors affecting N leaching under tillage are not fully understood. Effects of tillage at various frequencies on leached N were examined in a one-year in situ simulation experiment using five tillage treatments: no tillage (T0), semiannual tillage (T1), and tillage every four months (T2), two months (T3), and monthly (T4). Concentration and amount of leached N had peaks in dry-rewetting months. Tillage significantly increased total amounts of leached N during the one-year experiment, and the largest amount of leached N was under tillage at the highest frequency. The primary form of N in leachate was NO3 over bar (88.49-91.11%), followed by DON (7.80-9.87%), and then NH4+ with the lowest amount (1.09-2.10%). Tillage increased the amount of leached NO3 over bar and DON, but had no significant effect on leached NH4+. Additionally, the amount of leached N had significantly negative correlations with 5-8 mm soil aggregate, NO3 over bar , DON, and sand content, and positive correlations with 2-5 and 0.25-2 mm. Soil 5-8 mm aggregate and DON were the main factors explaining the variation in leached N according to the RDA analysis. Tillage increased the breakdown of large aggregates, appearing to have increased the mineralization of organic matter, which resulted in increased N leaching. Our results emphasize the importance of reducing or eliminating physical disturbance indued by tillage and maintenance of large soil aggregates for decreasing N leachate in lime soil of karst regions.
期刊：
Journal of Adolescence,2022年94(3):380-389 ISSN：0140-1971
通讯作者：
Xinhua Yang
作者机构：
[Yang, Xinhua] Wenzhou Med Univ, Affiliated Kangning Hosp, Gaojiao Campus, Wenzhou 325035, Peoples R China.;[Harrison, Phillippa; Yang, Xinhua] Kings Coll London, Ctr Affect Disorders, Psychol Med, Inst Psychiat Psychol & Neurosci, London, England.;[Guo, Yuqi] Hunan Agr Univ, Inst Educ Rural Children & Adolescents Res Ctr Hl, Dept Psychol, Changsha, Peoples R China.;[Liu, Xiaoqun] Cent South Univ, Xiangya Sch Publ Hlth, Changsha, Peoples R China.
通讯机构：
[Xinhua Yang] T;The Affiliated Kangning Hospital, Wenzhou Medical University, Wenzhou, China<&wdkj&>Centre for Affective Disorders, Psychological Medicine, Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
期刊：
Land Use Policy,2022年120:106220 ISSN：0264-8377
通讯作者：
Minjuan Zhao
作者机构：
[Xie, Xianxiong] Hunan Agr Univ, Econ Coll, Changsha 410128, Peoples R China.;[Cui, Yu; Yao, Liuyang; Zhao, Minjuan] Northwest A&F Univ, Coll Econ & Management, Yangling 712100, Peoples R China.;[Cui, Yu; Yao, Liuyang; Zhao, Minjuan] Key Res Base Philosophy & Social Sci, Yangling 712100, Shaanxi, Peoples R China.;[Khan, Sufyan Ullah] Xian Int Univ, Coll Int Cooperat, Xian 710077, Peoples R China.;[Ni, Qi] Nanjing Normal Univ, Sch Marxism, Nanjing 210023, Peoples R China.
通讯机构：
[Minjuan Zhao] C;College of Economics and Management, Northwest A&F University, Yangling 712100, China<&wdkj&>Key Research Base of Philosophy and Social Science, Shaanxi Province 712100, China
关键词：
Ecological damaged areas;Fallow policy;Household income;Income components;Northwest China;Poor areas
期刊：
International Journal of Environmental Research and Public Health,2022年19(5) ISSN：1661-7827
通讯作者：
Jiang, T.
作者机构：
[Zhang, Xinyu; Zhu, Zhiqiang; He, Shuli; Ren, Xiaolu; Tao, Huilin] Shangrao Normal Univ, Sch Chem & Environm Sci, Shangrao 334001, Peoples R China.;[Yuan, Limin; Xie, Wenlian; Li, Lihong] Shanghai Univ Engn Sci, Sch Chem & Chem Engn, Shanghai 200335, Peoples R China.;[Zhang, Xinyu; Zhu, Zhiqiang; He, Shuli; Ren, Xiaolu; Tao, Huilin] Jiangxi Modern Polytech Coll, Sch Environm & Energy, Nanchang 330095, Jiangxi, Peoples R China.;[Jiang, Tao] Hunan Agr Univ, Natl & Prov Union Engn Res Ctr Vet Herbal Med Res, Changsha 410128, Peoples R China.
通讯机构：
National and Provincial Union Engineering Research Center for the Veterinary Herbal Medicine Resources and Initiative, Hunan Agricultural University, Changsha, China
摘要：
Biochar loading mixed-phase iron oxide shows great advantages as a promising catalyst owing to its eco-friendliness and low cost. Here, gamma-Fe2O3-x@biochar (E/Fe-N-BC) composite was successfully prepared by the sol-gel method combined with low-temperature (280 & DEG;C) reduction. The Scanning Electron Microscope (SEM) result indicated that gamma-Fe2O3-x particles with the size of approximately 200 nm were well-dispersed on the surface of biochar. The CO derived from biomass pyrolysis is the main reducing component for the generation of Fe (II). The high content of Fe (II) contributed to the excellent catalytic performance of E/Fe-N-BC for quinclorac (QNC) degradation in the presence of peroxymonosulfate (PMS). The removal efficiency of 10 mg/L of QNC was 100% within 30 min using 0.3 g/L gamma-Fe2O3-x@biochar catalyst and 0.8 mM PMS. The radical quenching experiments and electron paramagnetic resonance analysis confirmed that & BULL;OH and SO4 & BULL;(-) were the main radicals during the degradation of QNC. The facile and easily mass-production of gamma-Fe2O3-x@biochar with high catalytic activity make it a promising catalyst to activate PMS for the removal of organic pollutants.
通讯机构：
[Mengyuan Sui] S;School of Administration and Law, Hunan Agricultural University, Changsha 410100, China<&wdkj&>Author to whom correspondence should be addressed.
关键词：
civil servants;Internet use;happiness;self-rated health
摘要：
With the rapid socioeconomic development of China, studies related to Internet use and civil servants' happiness have become a research hotspot in Chinese academia. This study empirically analysed the impact of Internet use on the happiness of Chinese civil servants using a sample of 3793 civil servants in Hunan Province, China. It showed that Internet use significantly enhanced the subjective well-being of Chinese civil servants. Furthermore, heterogeneity analysis revealed significant heterogeneity in the effect of the Internet on civil servants' happiness, which varied across civil service groups with different education and gender. Moreover, the effect of Internet use on the happiness of the male and better educated civil servant groups was more pronounced than in the female and less educated civil servant groups. Additionally, mediation analysis revealed that Internet use and the happiness of civil servants were not linear, with health having a significant mediating effect. This indicates that Internet use helps civil servants maintain good health, and thereby enhances the happiness of civil servants. In addition, we also use a propensity score matching model (PSM) to address the endogeneity problem due to sample selectivity bias. The results show that the estimates are more robust after eliminating sample selectivity bias. The effect of Internet use on civil servants' subjective well-being would be underestimated if the sample selectivity bias is not removed.
通讯机构：
[Huang Huang; Chunyun Guan] A;Authors to whom correspondence should be addressed.<&wdkj&>Hunan Engineering Research Center of Rice Field Ecological Planting and Breeding, Changsha 410128, China<&wdkj&>Department of Agronomy, College of Agronomy, Hunan Agricultural University, Changsha 410128, China
摘要：
In this study, the role of exogenous root exudates and microorganisms was investigated in the application of modified nanoscale zero-valent iron (nZVI) for the remediation of cadmium (Cd)-contaminated soil. In this experiment, citric acid (CA) was used to simulate root exudates, which were then added to water and soil to simulate the pore water and rhizosphere environment. In detail, the experiment in water demonstrated that low concentration of CA facilitated Cd removal by nZVI, while the high concentration achieved the opposite. Among them, CA can promote the adsorption of Cd not only by direct complexation with heavy metal ions, but also by indirect effect to promote the production of iron hydroxyl oxides which has excellent heavy metal adsorption properties. Additionally, the H(+) dissociated from CA posed a great influence on Cd removal. The situation in soil was similar to that in water, where low concentrations of CA contributed to the immobilization of Cd by nZVI, while high concentrations promoted the desorption of Cd and the generation of CA-Cd complexes which facilitated the uptake of Cd by plants. As the reaction progressed, the soil pH and cation exchange capacity (CEC) increased, while organic matter (OM) decreased. Meanwhile, the soil microbial community structure and diversity were investigated by high-throughput sequencing after incubation with CA and nZVI. It was found that a high concentration of CA was not conducive to the growth of microorganisms, while CMC had the effect of alleviating the biological toxicity of nZVI.
摘要：
The construction industry plays an important role in China's industrialization and urbanization process, which has become a major contributor to carbon emission in China. We innovatively use carbon footprint as an indicator of undesirable output in evaluating the construction industry since it captures both direct and indirect carbon emission. Then we conduct a comprehensive analysis of eco-efficiency of this industry under the framework of natural disposability and managerial disposability with a new radial DEA model on considering both desirable and undesirable outputs. We have several important findings. First, non-metallic mineral products, metal smelting and calendering, electricity and heat production, and supply are major drives from the perspective of the industrial chain. And the carbon footprint is mainly caused by capital formation from the final demand perspective. Second, most regions have a relatively lower eco-efficiency due to weak awareness of environmental protection, and there is a large emission reduction potential by eco-technology innovation. Finally, developed regions prefer to adopt the strategy of increasing investment in eco-technology innovation. The other regions generally adopted the strategy of reducing all inputs. The government should strengthen environment regulation and encourage the developing regions to increase investment in eco-technology innovation.
通讯机构：
[Sheng Zhang] N;[Ailing Liu] C;College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, China<&wdkj&>National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Collaborative Innovation Centre of Utilisation of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, Hunan, China
摘要：
Skeletal muscle (SkM) is essential for body movement, energy metabolism, and material metabolism, and directly influences the quality of human life. Aging, chronic diseases, and strenuous exercise often lead to various health problems associated with SkM, including muscle atrophy, loss of muscle mass and strength, and metabolic disorders. Various natural products (NaPs), mainly resveratrol (RES), quercetin (QUE), ursolic acid (UA), ecdysone (ECD; mainly 20-OH ECD, 20-HE), and vitamin D, have been reported to protect or regulate SkM health. Some of the products are functionally equivalent to sex hormones, and some are even referred to as "plant exercise pills." However, controversy persists regarding the role of NaPs in SkM health. Therefore, this review objectively summarizes the in vivo and vitro biological activities, molecular mechanisms, and clinical research results of studies on NaPs applied in the regulation of SkM health over the past decade. The present review could advance further research on NaPs and SkM health, and facilitate the revelation of new evidence that could facilitate the application of NaPs in ensuring SkM health. (c) 2021 Elsevier Inc. All rights reserved.
摘要：
Previous studies of the Children's Hope Scale (CHS) have not compared its factor structure using samples of Chinese early adolescents and American early adolescents. Contrary to expectations, the one-factor model revealed a better fit for the Chinese sample (N = 1184) whereas the two-factor model revealed a better fit for the American sample (N = 1049). Full measurement invariance was not demonstrated for the two-factor model of the CHS with the Chinese adolescents. This finding indicated that researchers should not make mean level comparisons between the two factors of agency and pathways across early adolescents from these two nations. Partial scalar invariance was achieved for the one-factor model, which suggested that researchers may tentatively make comparisons between Chinese and American early adolescents using CHS total scores. Although caution should be exercised in interpreting the mean differences, Chinese adolescents reported a lower total mean level of hope than American adolescents. Differences in the findings are discussed within the collectivism-individualism framework.
