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Response of soil organic carbon stocks and soil microbial biomass carbon to natural grassland conversion: A global meta-analysis

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Science of the Total environment 2025年 965卷 178481页

作者： Cai, Yijun Yang, Yuwen Jiang, Jinlin Long, Tao Gu, Xueyuan Guo, Yang Li, Ming Xie, Yufeng Key Laboratory of Soil Environmental Management and Pollution Control Nanjing Institute of Environmental Sciences Ministry of Ecology and Environment Nanjing210042 China State Key Laboratory of Pollution Control and Resource Reuse School of Environment Nanjing University Nanjing210023 China

Natural grasslands worldwide are increasingly being converted into other land-use types, such as cropland and forest, thereby impacting soil carbon cycles and stocks. Soil organic carbon (SOC) is essential for regulating soil properties and microbial communities, while microbial biomass carbon (MBC) is the most active fraction of the SOC pool, both of which play pivotal roles in the global carbon cycle. Here, we performed a meta-analysis on 623 and 85 individual observations from 85 peer-reviewed articles to quantitatively evaluate the effect of grassland conversion on SOCS and MBC. Overall, conversions significantly reduced SOCS and MBC by 10.11 % and 30.63 %, respectively. Notably, the impact varied by conversion type: converting grassland to forest, cropland, and plantation reduced SOCS by 7.69 %, 16.47 %, and 20.55 %, respectively. Meanwhile, converting grassland to cropland and abandoned land decreased MBC by 47.80 % and 38.74 %, respectively. environmental factors such as mean annual temperature (MAT), mean annual precipitation (MAP), soil total nitrogen (TN), and soil carbon-to‑nitrogen ratio (C/N) influenced these changes. SOCS and MBC were positively correlated with MAT, soil C/N and TN. Specifically, when the C/N or TN of the converted soil exceeded 1.21 or 1.11 times that of the original grassland, SOCS would exhibit a trend of carbon sequestration. Our findings provide valuable insights for global soil carbon sequestration and land use management policies. © 2025

关键词： Carbon sequestration

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A novel structure of quasi-monolayered NiCo-bimetal-phosphide for superior electrochemical performance

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Journal of Energy Chemistry 2022年第11期31卷 203-211,I0007页

作者： Long Zhao Ming Wen Yakun Tian Qingsheng Wu Yongqing Fu School of Chemical Science and Engineering Shanghai Key Laboratory of Chemical Assessment and SustainabilityState Key Laboratory of Pollution Control and Resource ReuseTongji UniversityShanghai 200092China Faculty of Engineering and Environment Northumbria UniversityNewcastle upon TyneNE18STUnited Kingdom

Bimetallic transition metal phosphides(TMPs)as potential candidates for superior electrochemical performance are still facing great challenges in the controllable preparation of two-dimensional(2 D)structures with high aspect ***,a novel structure of quasi-monolayered NiCo-bimetal-phosphide(NiCoP)has been designed and successfully synthesized by the newly developed process combined with ultrasonic-cavitation and *** is the first time to break through the controllable preparation of 2 D bimetal-phosphides with a thickness of 0.98 nm in *** on the advantages of 2 D quasi-monolayer structure with dense crystalline-amorphous interface and the reconfigured electronic structure between Ni^(δ+)/Co^(δ+)and P^(δ-),the optimized Ni_(5%)CoP exhibits an outstanding bifunctional performance for electrocatalyzing both hydrogen evolution reaction and oxygen evolution reaction in an alkaline ***_(5%)CoP presents lower overpotentials and voltage of 84 mV&259 mV and1.48 V at the current density of 10 mA cm^(-2)for HER&DER and overall water splitting,respectively,which are superior to most other reported 2 D *** work provides a new strategy to optimize the performance of electrolytic water for bimetal-phosphates and it may be of significant value in extending the design of other ultrathin 2 D structured catalysts.

关键词： 2D quasi-monolayer Hydrogen evolution reaction Bimetal phosphide Oxygen evolution reaction Ultrasonic-cavitation

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铜基催化剂用于一氧化碳电还原为多碳产品

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Science China Materials 2024年第6期67卷 1684-1705页

作者：赵雯刘娟王光滔王新天杨传举李剑王鋙葶孙晓莲林日琛左淦丞朱文磊 State Key Laboratory of Pollution Control and Resource Reuse Frontiers Science Center for Critical Earth Material CyclingState Key Laboratory of Pollution Control and Resource Reusethe Frontiers Science Center for Critical Earth Material CyclingSchool of the EnvironmentNanjing UniversityNanjing 210023China State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China State Key Laboratory of Natural Medicines Key Laboratory of Drug Quality Control and PharmacovigilanceSchool of PharmaceuticsChina Pharmaceutical UniversityNanjing 210009China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 211189China Jiangsu Engineering Lab of Water and Soil Eco-remediation School of EnvironmentNanjing Normal UniversityNanjing 210023China

电化学二氧化碳还原(ECO_(2)R)是一种将碳和可再生能源的能量储存在多碳产品(C_(2+))的化学键中的有效途径.然而,反应涉及的复杂步骤为CO_(2)直接转化为C_(2+)设置了巨大的障碍.一种利用CO作为“中转站”,通过串联ECO_(2)R和电化学CO还... 详细信息

电化学二氧化碳还原(ECO_(2)R)是一种将碳和可再生能源的能量储存在多碳产品(C_(2+))的化学键中的有效途径.然而,反应涉及的复杂步骤为CO_(2)直接转化为C_(2+)设置了巨大的障碍.一种利用CO作为“中转站”,通过串联ECO_(2)R和电化学CO还原(ECOR)以提高生产C_(2+)的选择性和反应速率的策略引起了人们的广泛关注.本文总结了铜基电催化剂在ECOR中催化特定C_(2+)生成的设计策略.其次,从各个方面总结了催化剂工程的代表性设计策略,并介绍了电解反应器改进方面的最新进展.最后,阐述了该研究领域面临的主要挑战和未来前景.这些见解和观点将为铜基电催化剂的设计提供有益指导.

关键词： CO electroreduction Cu-based catalysts multi-car-bon products

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Asymmetric impacts of natural and anthropogenic factors on wetland landscape evolution in Fenhe River Basin, China

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Watershed Ecology and the environment 2024年第1期6卷 176-186页

作者： Xie, Chengjie Zeng, Yingzheng Hao, Xiaoyang Ning, Zhonghua Xie, Tian School of Environment and Resource Taiyuan University of Technology Taiyuan 030024 China Key Laboratory of Investigation Monitoring and Protection of Natural Resources in Mining Cities Coal Geological Geophysical Exploration Surveying & Mapping Institute of Shanxi Province Jinzhong 030600 China School of Ecology and Nature Conservation Beijing Forestry University Beijing 100083 China School of Environment State Key Joint Laboratory of Environmental Simulation and Pollution Control Beijing Normal University Beijing 100875 China

In recent years, Fenhe River Basin (FRB) wetlands have been facing severe challenges due to climate change and human activities. It was of great significance to understand the dynamic changes of FRB wetlands and their driving factors for ecological protection. Based on the land use data, runoff, rainfall and GDP data of FRB from 1980 to 2020, the evolution characteristics and driving factors of wetland pattern in FRB were analyzed. The results showed that the wetland types in FRB mainly included paddy, reservoir, river, beach and marsh. Among them, natural wetlands accounted for 72.46 %, and constructed wetlands accounted for 27.53 %. The main types of wetlands in FRB were river, reservoirs and beach, which account for 92.26 % of the whole wetland area. However, the dominant position of reservoir patch was more obvious than the others during 1980–2020. Landscape index showed that the shape of landscape tended to be regular and became more fragmentation. The transfer between wetlands and other land use types mainly occurred in the northern and southern parts of the FRB, and the main conversion types were occurred between dry land and wetlands, grassland and wetlands. Both natural and human factors drove the evolution pattern of wetlands, but the emphases were different. Runoff had a significant effect on wetland pattern at landscape level, while rainfall had a more significant effect on wetland evolution at class level. Urbanization rate and GDP had important effects on the evolution of wetland pattern at both class and landscape levels. © 2024 The Authors

关键词： Fenhe basin Land use types Landscape index Shanxi province Wetlands

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Bottom-up synthesis of semiconductive carbonaceous nanosheets on hematite photoanode for photoelectrochemical water splitting

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Nano Research 2022年第1期15卷 627-636页

作者： Guosheng Li Zhuofeng Hu School of Environment Science and Engineering Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation TechnologySun Yat-sen UniversityGuangzhou 510275China College of Environmental and Chemical Engineering Zhaoqing UniversityZhaoqing 526061China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China

Coupling two-dimention carbon materials like graphene on photodelectrode can achieve high-efficiency photoelectrochemical ***-up synthesis of carbon-based two-dimensional materials in green media from simple molecules is very attractive but remains a *** is an ideal precursor for the synthesis but previous report requires pyrolysis at high temperature(>700℃).Herein,starting with glucose,we develop a low temperature(210℃)synthesis of carbonaceous nanosheets in aqueous solution of *** the aid of ethylenediamine and Fe3+/Fe27Co27Ni2+ions,the nanosheets can grow on hematite nanorod array with very close ***,a metallic region is formed at the interface due to atom distribution distortion,which can promote the charge *** activity can be greatly enhanced by about 500%due to fast charge *** is much better than that prepared by physically or chemically mixing graphene and hematite(<200%).The enhancement is mainly due to the deformation area between the nanosheets and the *** effective hole diffusion length increases from 2 to 8 nm and lifetime of charge carrier also increases,as confirmed by ultrafast transient absorption *** method provides more opportunity for simple,mild and cost-effective fabrication of carbon-based two-dimensional by bottom-up method.

关键词： photocatalytic water oxidation hematite two-dimensional carbon bottom-up

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Development of an effective QSAR-based hazard threshold prediction model for the ecological risk assessment of aromatic hydrocarbon compounds

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environmental Science and pollution Research 2024年第34期31卷 47220-47236页

作者： Lv, Xiudi He, Mei Wei, Jiajia Li, Qiang Nie, Fan Shao, Zhiguo Wang, Zhansheng Tian, Lei Wuhan430100 China School of Resources and Environment Yangtze University Wuhan430100 China School of Petroleum Engineering Yangtze University Wuhan430100 China State Key Laboratory of Petroleum Pollution Control CNPC Research Institute of Safety and Environmental Technology Co.Ltd Beijing102206 China

The insufficient hazard thresholds of specific individual aromatic hydrocarbon compounds (AHCs) with diverse structures limit their ecological risk assessment. Thus, herein, quantitative structure–activity relationship (QSAR) models for estimating the hazard threshold of AHCs were developed based on the hazardous concentration for 5% of species (HC5) determined using the optimal species sensitivity distribution models and on the molecular descriptors calculated via the PADEL software and ORCA software. Results revealed that the optimal QSAR model, which involved eight descriptors, namely, Zagreb, GATS2m, VR3_Dzs, AATSC2s, GATS2c, ATSC2i, ω, and Vm, displayed excellent performance, as reflected by an optimal goodness of fit (R2adj = 0.918), robustness (Q2LOO = 0.869), and external prediction ability (Q2F1 = 0.760, Q2F2 = 0.782, and Q2F3 = 0.774). The hazard thresholds estimated using the optimal QSAR model were approximately close to the published water quality criteria developed by different countries and regions. The quantitative structure–toxicity relationship demonstrated that the molecular descriptors associated with electrophilicity and topological and electrotopological properties were important factors that affected the risks of AHCs. A new and reliable approach to estimate the hazard threshold of ecological risk assessment for various aromatic hydrocarbon pollutants was provided in this study, which can be widely popularised to similar contaminants with diverse structures. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Risk assessment

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A Multi-Stage Green Barrier Strategy for the control of Global SARS-CoV-2 Transmission via Cold Chain Goods

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Engineering 2022年第2期8卷 13-16页

作者： Xu He Xinwang Liu Pan Li Panpan Wang Haijun Cheng Wenqian Li Boda Li Ting Liu Jun Ma State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China

*** object-to-human transmission route of SARS-CoV-2 At the time of writing,coronavirus disease 2019(COVID-19),which is caused by the severe acute respiratory syndrome coron-avirus 2(SARS-CoV-2),has been a global pandemic for more than a *** of 22 September 2021,the global cumulative incidence exceeds 229 million cases,and the number of deaths has exceeded 4.75 million[1].The current situation of epidemic prevention and control within the countries around the world can be roughly divided into two stages:the pandemic stage that the United states,the United Kingdom,and India are still experiencing(as of 23 September 2021,newly reported cases in the last 24 h in the United states,United Kingdom,and India are 202840,31095,and 26964,respectively[1]);and the normalized epidemic pre-vention and control stage that countries such as China and New Zealand are currently in.

关键词： prevention Strategy Chain

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A magnetic-void-porous MnFe_(2)O_(4)/carbon microspheres nano-catalyst for catalytic ozonation:Preparation,performance and mechanism

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environmental Science and Ecotechnology 2021年第3期7卷 35-47页

作者： Xiaoguang Jin Changyong Wu Xiangmiao Tian Panxin Wang Yuexi Zhou Jiane Zuo State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing100012China Research Center of Environmental Pollution Control Engineering Technology Chinese Research Academy of Environment SciencesBeijing100012China

Wastewater treatment is essential to guarantee human health and ecological *** ozonation with nanocatalysts is a widely studied and efficient treatment ***,this method has always been limited by nanocatalysts disadvantages such as easily loss,difficult to separate and reuse,and catalytic ability decay caused by aggregation,which could cause severe resources waste and potential risk to human health and *** remedy these challenges,a magnetic-void-porous MnFe_(2)O_(4)/carbon microsphere shell nanocatalyst(CMS-MnFe_(2)O_(4))was successfully synthesized using renewable natural *** separation test showed CMS-MnFe_(2)O_(4) was rapidly separated within 2 min under an external magnetic *** catalytic ozonation of oxalic acid(OA),CMS-MnFe_(2)O_(4) showed efficient and stable catalytic efficiency,reaching a maximum total organic carbon removal efficiency of 96.59% and maintained a 93.88% efficiency after 4 *** stable catalytic efficiency was due to the supporting effects of the carbon microsphere shell,which significantly enhanced CMS-MnFe_(2)O_(4) chemical stability and reduced the metal ions leaching to 10-20% of MnFe_(2)O_(4) through electron *** explore the catalytic mechanism,radical experiments were conducted and a new degradation pathway of OA involving superoxide anions rather than hydroxyl radicals was ***,this study suggests that an efficient,recyclable,stable,and durable catalyst for catalytic ozonation could be prepared.

关键词： Catalytic ozonation Magnetic nanocatalyst Separation recycling Catalytic mechanism Metal leaching

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Kinetics and mechanisms of non-radically and radically induced degradation of bisphenol A in a peroxymonosulfate-chloride system

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environmental Science and Ecotechnology 2024年第6期22卷 191-197页

作者： Zhao Song Yu Zhang Yanhu Yang Yidi Chen Nanqi Ren Xiaoguang Duan State Key Laboratory of Urban Water Resource and Environment Shenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen518055PR China School of Materials and Environmental Engineering Shenzhen Polytechnic UniversityShenzhen518055PR China School of Chemical Engineering The University of AdelaideAdelaideSA5005Australia

Bisphenol A,a hazardous endocrine disruptor,poses significant environmental and human health threats,demanding efficient removal *** biological methods struggle to treat BPA wastewater with high chloride(Cl^(-))levels due to the toxicity of high Cl^(-)to *** persulfate-based advanced oxidation processes(PS-AOPs)have shown promise in removing BPA from high Cl^(-)wastewater,their widespread application is always limited by the high energy and chemical usage *** we show that peroxymonosulfate(PMS)degrades BPA in situ under high Cl^(-)*** was completely removed in 30 min with 0.3 mM PMS and 60 mM Cl^(-).Non-radical reactive species,notably free chlorine species,including dissolved Cl_(2)(l),HClO,and ClO−dominate the removal of BPA at temperatures ranging from 15 to 60℃.Besides,free radicals,including•OH and Cl_(2)^(•−),contribute minimally to BPA removal at 60°*** on the elementary kinetic models,the production rate constant of Cl_(2)(l)(32.5 M^(−1) s^(−1))is much higher than HClO(6.5×10^(−4) M^(−1) s^(−1)),and its degradation rate with BPA(2×10^(7) M^(−1) s^(−1))is also much faster than HClO(18 M^(−1) s^(−1)).Furthermore,the degradation of BPA by Cl_(2)(l)and HClO were enlarged by 10-and 18-fold at 60℃ compared to room temperature,suggesting waste heat utilization can enhance treatment ***,this research provides valuable insights into the effectiveness of direct PMS introduction for removing organic micropollutants from high Cl^(-)*** further underscores the critical kinetics and mechanisms within the PMS/Cl⁻system,presenting a cost-effective and environmentally sustainable alternative for wastewater treatment.

关键词： BPA removal Saline wastewater Peroxymonosulfate Free chlorine Kinetic model

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Urban constructed wetlands: Assessing ecosystem services and disservices for safe, resilient, and sustainable cities

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Frontiers of Engineering Management 2023年第4期10卷 582-596页

作者： Aamir Mehmood SHAH Gengyuan LIU Yu CHEN Qing YANG Ningyu YAN Feni AGOSTINHO Cecilia MVBALMEIDA Biagio FGIANNETTI State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentBeijing Normal UniversityBeijing 100875China Beijing Engineering Research Center for Watershed Environmental Restoration&Integrated Ecological Regulation Beijing 100875China Advanced Interdisciplinary Institute of Environment and Ecology Beijing Normal UniversityZhuhai 519087China Key Laboratory for City Environmental Safety and Green Development of the Ministry of Education Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou510006China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou511458China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentBeijing Normal UniversityBeijing100875China Programa de Pós-graduação em Engenharia de Produção Laboratório de Produção e Meio AmbienteUniversidade Paulista(UNIP)São Paulo04026-002Brazil

Climate change and rapid urbanization are pressing environmental and social concerns, with approximately 56% of the global population living in urban areas. This number is expected to rise to 68% by 2050, leading to the expansion of cities and encroachment upon natural areas, including wetlands, causing their degradation and fragmentation. To mitigate these challenges, green and blue infrastructures (GBIs), such as constructed wetlands, have been proposed to emulate and replace the functions of natural wetlands. This study evaluates the potential of eight constructed wetlands near Beijing, China, focusing on their ecosystem services (ESs), cost savings related to human health, growing/maintenance expenses, and disservices using an emergy-based assessment procedure. The results indicate that all constructed wetlands effectively purify wastewater, reducing nutrient concentrations (e.g., total nitrogen, total phosphorus, and total suspended solids). Among the studied wetlands, the integrated vertical subsurface flow constructed wetland (CW-4) demonstrates the highest wastewater purification capability (1.63E+14 sej/m^(2)/yr) compared to other types (6.78E+13 and 2.08E+13 sej/m^(2)/yr). Additionally, constructed wetlands contribute to flood mitigation, groundwater recharge, wildlife habitat protection, and carbon sequestration, resembling the functions of natural wetlands. However, the implementation of constructed wetlands in cities is not without challenges, including greenhouse gas emissions, green waste management, mosquito issues, and disturbances in the surrounding urban areas, negatively impacting residents. The ternary phase diagram reveals that all constructed wetlands provide more benefits than costs and impacts. CW-4 shows the highest benefit-cost ratio, reaching 50%, while free water surface constructed wetland (CW-3) exhibits the lowest benefits (approximately 38%), higher impacts (approximately 25%), and lower costs (approximately 37%) compared to other we

关键词： constructed wetland emergy ecosystem services disservices ternary diagram

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