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Effects of seasonal variation on soil microbial community structure and enzyme activity in a Masson pine forest in southwest China

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Journal of Mountain Science 2020年第6期17卷 1398-1409页

作者： LUO Song-ping HE Bing-hui ZENG Qing-ping LI Nan-jie YANG Lei College of Resources and Environment Southwest UniversityChongqing 400715China Technology Consulting Research Center of Soil and Water Conservation of Guizhou Province Guiyang 550002China Chongqing Engineering Technology Research Center for Information Management in Development Chongqing Technology and Business UniversityChongqing 400067China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Soil microbial communities and enzyme activities play key roles in soil *** are sensitive to changes in environmental factors,including seasonal temperature,precipitation variations and soil *** understand the interactive mechanisms of seasonal changes that affect soil microbial communities and enzyme activities in a subtropical masson pine(Pinus massoniana)forest,we investigated the soil microbial community structure and enzyme activities to identify the effect of seasonal changes on the soil microbial community for two years in Jinyun Mountain National Nature Reserve,Chongqing,*** soil microbial community structure was investigated using phospholipid fatty acids(PLFAs).The results indicated that a total of 36 different PLFAs were identified,and 16:0 was found in the highest proportions in the four seasons,moreover,the total PLFAs abundance were highest in spring and lowest in *** and actinomycetes were the dominant types in the study *** changes also had a significant(P<0.05)influence on the soil enzyme *** maximum and minimum values of the invertase and catalase activities were observed in autumn and winter,***,the maximum and minimum values of the urease and phosphatase acid enzymatic activities were found in spring and winter,*** correspondence analysis(CCA)analysis revealed that the seasonal shifts in soil community composition and enzyme activities were relatively more sensitive to soil moisture and temperature,but the microbial community structure and enzyme activity were not correlated with soil pH in the study *** study highlights how the seasonal variations affect the microbial community and function(enzyme activity)to better understand and predict microbial responses to future climate regimes in subtropical area.

关键词： PLFA analysis Soil microorganisms soil enzymes Seasonal shifts Soil moisture Soil temperature

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Emerging challenges of ozone impacts on asian plants:actions are needed to protect ecosystem health

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Ecosystem Health and Sustainability 2021年第1期7卷 107-120页

作者： Zhaozhong Feng Evgenios Agathokleous Xu Yue Elina Oksanen Elena Paoletti Hiroyuki Sase Anthony Gandin Takayoshi Koike Vicent Calatayud Xiangyang Yuan Xuejun Liu Alessandra De Marco Yves Jolivet Sari Kontunen-Soppela Yasutomo Hoshika Hikaru Saji Pin Li Zhengzhen Li Makoto Watanabe Kazuhiko Kobayashi Key Laboratory of Agrometeorology of Jiangsu Province School of Applied MeteorologyNanjing University of Information Science&TechnologyNanjingChina School of Environmental Science and Engineering Nanjing University of Information Science&TechnologyNanjingChina Department of Environmental and Biological Sciences University of Eastern FinlandJoensuuFinland Institute of Research on Terrestrial Ecosystems National Research CouncilSesto FiorentinoItaly Ecological Impact Research Department Asia Center for Air Pollution Research(ACAP)NiigataNishi-kuJapan AgroParisTech INRAUMR SilvaUniversitéDe LorraineNancyFrance Department of Forest Science Hokkaido UniversitySapporoJapan Fundación CEAM ValenciaPaternaSpain State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina College of Resources and Environmental Sciences Key Laboratory of Plant-Soil Interactions of MOEBeijing Key Laboratory of Cropland Pollution Control and RemediationChina Agricultural UniversityBeijingChina Department for Sustainability(SSPT) Italian National Agency for New TechnologiesEnergy and Sustainable Economic Development(ENEA)RomeItaly Center for Environmental Biology and Ecosystem Studies National Institute for Environmental StudiesIbarakiTsukubaJapan Institute of Agriculture Tokyo University of Agriculture and TechnologyTokyoFuchuJapan Graduate School of Agricultural and Life Sciences the University of TokyoTokyoBunkyo-kuJapan

Context:Ozone concentrations near the land surface are rising in Asia while they are declining or stagnating in Europe and North *** is the most widespread air pollutant negatively affecting vegetation,and its increased concentrations pose a major threat to food quality and production and other ecosystem services in ***:In this review,we provide an overview of scientific challenges in the impacts of ozone pollution on Asian vegetation,and synthesize the challenges toward mitigation of the ***:We argue that new policy initiatives need to seek both reduction of ozone levels and enhancement of plant tolerance to ozone to maintain food quality and ensure food ***:The scientific advancements must be transferred to actions by two types of institutions:a)environmental agencies for reducing ozone levels and b)agricultural research institutions for enhancing plant tolerance to *** connecting the scientific advancements with the institutional actions,scientists in Asian countries should play the key role taking advantages of interdisciplinary and international collaborations.

关键词： Asia air pollution monitoring ecosystem health environmental regulation ozone impact mitigation vegetation

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Geochemistry of upper Permian siliceous rocks from the Lower Yangtze region, southeastern China:implications for the origin of chert and Permian ocean chemistry

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Petroleum Science 2019年第2期16卷 252-266页

作者： Zhi-Wei Liao Wen-Xuan Hu Xiu-Gen Fu Zhong-Ya Hu State Key Laboratory of Coal Mine Disaster Dynamics and Control College of Resources and Environmental Science Chongqing University Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Mineral Shandong University of Science and Technology Key Laboratory of Sedimentary Basin and Oil and Gas Resources Ministry of Land and Resources State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology CAS) State Key Laboratory for Mineral Deposits Research School of Earth Sciences and Engineering Institute of Energy Sciences Nanjing University

The Permian Chert Event is of great significance to understanding the geological evolution of the entire Permian; however,the origin of widespread chert formation is debated. We report new geochemical data from deep-marine siliceous rocks of the upper Permian Da-long Formation, Lower Yangtze region, southeastern China. Their geochemical results show that these thin-bedded siliceous rocks have a clear biologic origin, with rare to no evidence of hydrothermal influence. The values of Al/(Al + Fe + Mn) and Eu/Eu~* are 0.60-0.84(mean = 0.72) and 0.45-1.08(mean = 0.77), respectively, and Mn/Ti ratios are relatively low(mean = 0.72). The correlations of LaN/CeN, LaN/YbN, and Fe203/Ti02 with Al_2 O_3/(Al_2 O_3 + Fe_2 O_3), along with the Ce anomaly, indicate that the Da-long siliceous rocks were deposited at a transitional zone between a continental margin and the open ocean; i.e., relatively close to terrestrial sediment input and far from hydrothermal activity. The accumulation of chert is related to its unique paleogeographic location in an equatorial setting with many submarine *** upwelling and frequent local volcanism are the main factors that promoted the development of siliceous rocks in the studied area. Ocean acidification triggered by large-scale volcanism(Large Igneous Province) during the late Permian led to extensive silica precipitation and preservation.

关键词： Lower Yangtze region Da-long Formation Siliceous rock Biological chert Volcanism

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Freestanding Catalytic Membranes Assembled from Blade-Shaped Prussian Blue Analog Sheets for Flow-Through Degradation of Antibiotic Pollutants

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SSRN 2022年

作者： Li, Jiaxin Yi, Huiyu Shen, Yi Li, Yungui Fang, Qile Research and Development Center for Watershed Environmental Eco-Engineering Beijing Normal University Zhuhai519087 China State Key Laboratory of Water Environment Simulation School of Environment Beijing Normal University Beijing100875 China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of Technology Hangzhou310032 China Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology Department of Environmental Engineering Southwest University of Science and Technology Mianyang621010 China China West Normal University China

Membrane catalysis is a frontier technology for effectively removing organic containments, and burgeoning membranes assembled from two-dimensional (2D) materials have significantly flourished in peroxymonosulfate (PMS)-based catalytic membrane processes. Here, a bottom-up strategy based on restricting CoFe Prussian blue analog (PBA) crystal growth in one direction is used to fabricate large-scale 2D blade-shaped PBA sheets, whose radial size and thickness can be adjusted by the precursor ion ratio (CoII/FeII). The stripe CoFe PBA sheets can directly serve as building blocks and are simply assembled into a free-standing 2D membrane by interweaving assembly. The assembled CoFe PBA catalytic membrane possesses excellent wetting properties, guaranteeing an unimpeded mass transfer process, which leads to a superior instantaneous catalytic performance for the antibiotic norfloxacin during the continuous and flow-through membrane catalytic process. SO4•− and 1O2 are demonstrated to be the main active species, which synergistically contribute to the PMS-driven organic degradation. © 2022, The Authors. All rights reserved.

关键词： Antibiotics

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Precursor Design in Self-Templating Strategy for Carbon Encapsulated Bimetallic Catalysts: Boosting Organic Pollutants Degradation Via Nonradical Pathways

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SSRN 2022年

作者： Guo, Weixuan Zhuang, Sixiang Shen, Yi Li, Yungui Zhang, Suorong Fang, Qile Research and Development Center for Watershed Environmental Eco-Engineering Beijing Normal University Zhuhai519087 China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of Technology Hangzhou310032 China Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology Department of Environmental Engineering Southwest University of Science and Technology Mianyang621010 China Chongqing Feiyang Measurement and Control Technology Research Institute Co. Ltd. Chongqing402760 China

Designing high-performance heterostructure catalysts for peroxymonosulfate (PMS) activation is a promising research area. In this study, we employed a self-templating strategy using Prussian blue analogs (PBAs) precursors as source design to fabricate CoFe/C heterostructure catalysts. The slow-speed coordination renders the CoFe PBAs precursor with highly ordered crystal structure and less coordinated water, resulting in an idea carbon-encapsulated CoFe bimetallic catalyst (CoFe-S-T) with more high-valance metals and graphitized carbon layer in its heterostructure, which is proved of superior catalytic performance for tetracycline (TC) degradation through nonradical pathway in PMS-driven oxidation. The higher CoIII/CoII ratio and surface oxygen content make CoFe-S-T an excellent catalyst by boosting 1O2 generation, which is the predominant active species. Besides, CoFe-S-T has a high proportion of graphitized carbon layer, which significantly improves the direct electron transfer pathway. Thus, utilizing precursor design in self-templating strategy is an effective method to synthesize high-performance heterostructure for PMS-driven organic pollutant degradation. © 2022, The Authors. All rights reserved.

关键词： Catalysts

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Precursor Design in Self-Templating Strategy for Carbon Encapsulated Bimetallic Catalysts: Boosting Organic Pollutants Degradation Via Nonradical Pathways

SSRN

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SSRN 2022年

作者： Fang, Qile Dong, Pingping Zhuang, Sixiang Shen, Yi Li, Yungui Zhang, Suorong Guo, Weixuan Research and Development Center for Watershed Environmental Eco-Engineering Beijing Normal University Zhuhai Campus Zhuhai519087 China Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province College of Environment Zhejiang University of Technology Hangzhou310032 China Sichuan Provincial Sci-Tech Cooperation Base of Low-cost Wastewater Treatment Technology Department of Environmental Engineering Southwest University of Science and Technology Mianyang621010 China Chongqing Feiyang Measurement and Control Technology Research Institute Co. Ltd. Chongqing402760 China

关键词： Catalysts

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Excitation-emission matrix (EEM) fluorescence spectroscopy for characterization of organic matter in membrane bioreactors: Principles, methods and applications

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Frontiers of environmental Science & engineering 2020年第2期14卷 55-73页

作者： Jinlan Yu Kang Xiao Wenchao Xue Yue-xiao Shen Jihua Tan Shuai Liang Yanfen Wang Xia Huang College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China School of Environment Resources and DevelopmentAsian Institute of TechnologyKlong LuangPathumthani 12120Thailand Department of Civil Environmentaland Construction EngineeringTexas Tech UniversityLubbockTX 79409USA College of Environmental Science and Engineering Beijing Forestry UniversityBeijing 100083China Research and Application Center for Membrane Technology School of EnvironmentTsinghua UniversityBeijing 100084China

The membrane bioreactor(MBR)technology is a rising star for wastewater *** pollutant elimination and membrane fouling performances of MBRs are essentially related to the dissolved organic matter(DOM)in the ***-dimensional excitation-emission matrix(3D-EEM)fluorescence spectroscopy,a powerful tool for the rapid and sensitive characterization of DOM,has been extensively applied in MBR studies;however,only a limited portion of the EEM fingerprinting information was *** paper revisits the principles and methods of fluorescence EEM,and reviews the recent progress in applying EEM to characterize DOM in MBR *** systematically introduced the information extracted from EEM by considering the fluorescence peak location/intensity,wavelength regional distribution,and spectral deconvolution(giving fluorescent component loadings/scores),and discussed how to use the information to interpret the chemical compositions,physiochemical properties,biological activities,membrane retention/fouling behaviors,and migration/transformation fates of DOM in MBR *** addition to conventional EEM indicators,novel fluorescent parameters are summarized for potential use,including quantum yield,Stokes shift,excited energy state,and fluorescence *** current limitations of EEM-based DOM characterization are also discussed,with possible measures proposed to improve applications in MBR monitoring.

关键词： excitation-emission matrix(EEM) dissolved organic matter(DOM) membrane bioreactor(MBR) fluorescence indicator characterization method

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Novel strategy for recovering phosphorus from sulfate-rich wastewater combined with phosphogypsum recycling

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Bioresource Technology 2025年 435卷

作者： Yan Cheng Haibo Li Wenjie He Hao Dong Linfeng Wang Gang Guo Guanghao Chen Jie Ma Hubei Key Laboratory of Regional Development and Environmental Response and Faculty of Resources and Environmental Science Hubei University Wuhan 430062 China School of Environmental Science and Engineering Key Laboratory of Water and Wastewater Treatment (MOHURD) and Hubei Provincial Engineering Research Center for Water Quality Safety and Pollution Control Huazhong University of Science and Technology Wuhan 430074 China Department of Civil & Environmental Engineering and Hong Kong Branch of the Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution The Hong Kong University of Science and Technology Hong Kong China

With global phosphorus depletion, recovering PO 4 3− from papermaking wastewater is crucial. However, high SO 4 2− hinders removal efficiency. This study proposes a novel strategy for recovering of PO 4 3− from papermaking wastewater combined with phosphogypsum recycling to form hydroxyapatite (Ca 5 (PO 4 ) 3 OH), using sulfur-metabolizing bacteria to address SO 4 2− . Optimally, 0.1 g phosphogypsum achieved 95 % PO 4 3− recovery. During the chemical stage, PO 4 3− decreased at a rate of 0.0556 d −1 through phosphogypsum hydrolysis and subsequent adsorption. During the biological reaction stage, sulfate-reducing bacteria, represented by Desulfobacteraceae , biologically transform SO 4 2− in phosphogypsum into S 2− while increasing alkalinity. Subsequently, sulfate-oxidizing bacteria, represented by Alcaligenaceae , biologically oxidize S 2− , releasing accumulated polyphosphate to PO 4 3− . Finally, the Ca 2+ released from phosphogypsum declined PO 4 3− from wastewater at rates of 0.0479 d −1 to form hydroxyapatite. Given that hydroxyapatite and phosphogypsum are critical raw material and product for wet-process H 3 PO 4 production, this strategy establishes a closed-loop cycle for sustainable phosphorus recovery.

关键词： Hydroxyapatite Microbial phosphogypsum reduction Phosphorus-rich wastewater Ratio of phosphogypsum to wastewater Sulfur-metabolizing bacteria

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Cadmium immobilization in river sediments using nano-chlorapatite modified biochars: Effects on prokaryotic communities

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Journal of environmental Management 2025年 389卷 126049页

作者： Yuan, Qiusheng Wang, Peifang Wang, Xun Hu, Bin Wang, Chao Xing, Xiaolei Huang, Rong Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes Ministry of Education College of Environment Hohai University Jiangsu Nanjing 210098 China Yunnan Provincial Key Laboratory of Carbon Sequestration and Pollution Control in Soils Faculty of Environmental Science and Engineering Kunming University of Science and Technology Yunnan Kunming 650500 China

In the face of worsening cadmium (Cd) pollution in river sediments, nano-chlorapatite (nClAP) modified biochars exhibit significant immobilization potential, but little is known about the ecological response of prokaryotic communities after remediation. In this study, nClAP-modified biochars derived from rice and wheat husk residues were used to immobilize Cd and evaluate their effects on α-diversity, co-occurrence network, and Cd-resistant genes of prokaryotic communities. Results revealed that pristine biochars converted exchangeable Cd to oxidizable and residual states via complexation, ion-exchange, and precipitation, while nClAP-modified biochars further facilitated the precipitation of Cd5(PO4)3Cl, Cd3(PO4)2, and Cd4P2O9. Consequently, the concentrations of Cd associated with toxicity characteristic leaching procedure (TCLP), physiologically based extraction test (PBET), overlying water, and pore water notably decreased, indicating a substantial reduction in Cd mobility and bio-accessibility. Benefiting from effective Cd stabilization and abundant nutrient inputs including carbon and phosphorus, the prokaryotic Species richness and Shannon diversity increased from 5762 to 6064–6443 and from 7.36 to 7.37–7.51, respectively. Furthermore, co-occurrence network analysis highlighted the keystone species responsible for nutrient cycling and Cd resistance. Prediction of Cd-resistance genes suggested that the abundance of Cd efflux genes (czcABCD) and Cd binding genes (dsbAB) decreased, attributing to the alleviated Cd toxic stress on prokaryotic cells after remediation. This study emphasizes the exceptional immobilization efficiency of nClAP-modified biochars and demonstrates their remarkable ecological benefits for microbes.

关键词： Biochar Cadmium Nano-chlorapatite Prokaryote Sediment

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Desalination Performance and Membrane Fouling Tendency of Shale Gas Produced Water with Various Pretreatment Levels by Flow-Electrode Capacitive Deionization

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SSRN 2022年

作者： Zhou, Boxun Xia, Shibin Zhang, Zhaoji Li, Shaohang Li, Peng Zhou, Zejun School of Resources and Environmental Engineering Wuhan University of Technology Wuhan430070 China Key Laboratory of Urban Environment and Health Ningbo Observation and Research Station Institute of Urban Environment Chinese Academy of Sciences Xiamen361021 China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control CAS Haixi Industrial Technology Innovation Center in Beilun Ningbo315830 China Sinopec Chongqing Fuling Shale Gas Exploration & Development Co.Ltd. Chongqing408014 China Sinopec Jianghan Oilfield Company Qianjiang408203 China

Cost-effective desalination of shale gas produced water (PW) has long been an industrial research hotspot. Flow-electrode capacitive deionization (FCDI), a recently developed electrochemical desalination technology, may be a novel option for PW disposal because of its unique and attractive advantages. However, reports on the desalination test of actual high-salinity industrial wastewater by FCDI are lacking. In this study, a laboratory-scale FCDI device with an online monitoring system was used for the desalination of shale gas PW. FCDI can achieve relatively stable desalination efficiency for pretreated PW with salinity of 2.65% and reach an energy-normalized salt removal of 0.479 mg/J. The flow electrode chemically activated by KOH can increase the FCDI average desalination rate by 98.5% for the pretreated saline PW. In addition, a variety of pretreatment measures are implemented to reduce organics and other impurities, and membrane fouling of saline PW desalination by FCDI is inevitable. Electrochemical impedance spectroscopy analysis revealed that the majority of fouling was accumulated on the anion exchange membrane (AEM) side. Residual pollutants in the PW, such as dissolved organic materials, are deposited onto the surface of AEM to form a fouling layer or blocking ion exchange channels. These pollutants are also adsorbed by the flow electrode in the AEM chamber, which destroy the optimal ion transport path and electric double-layer structure. Results showed that FCDI is more suitable for PW’s reverse osmosis (RO) permeate desalination to form a RO-FCDI hybrid process and replace the conventional two-stage RO technology. Therefore, this study provides a practical experimental case on the electrochemical desalination of saline PW by FCDI. © 2022, The Authors. All rights reserved.

关键词： Electrochemical impedance spectroscopy

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