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Interfacial processes and mechanisms of synergistic degradation of dichlorobiphenyl by white rot fungi and magnetite nanoparticles

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Science China earth Sciences 2023年第9期66卷 2057-2065页

作者： Le CHANG Guanghui YU Congqiang LIU Institute of surface-earth System Science School of Earth System ScienceTianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai RimBohai Coastal Critical Zone National Observation and Research StationTianjin UniversityTianjin 300072China

The rapid increase in the artificial syntheses of organic pollutants has raised widespread ***,the mechanisms by which fungi degrade these new organic pollutants in the environment and adapt to environmental stressors remain *** this study,Phanerochaete chrysosporium,a model white rot fungus,was used to explore the interfacial processes and mechanisms for synergistic degradation of 4,4′-dichlorobiphenyl(PCB15)with magnetite *** results showed that after 3 and 5 days of cultivation with Phanerochaete chrysosporium alone,the rates for PCB15 degradation were 32%and 65%,respectively,indicating that the white rot fungus itself was able to degrade the organic ***,the addition of magnetite nanoparticles significantly enhanced the degradation of PCB15 by Phanerochaete *** cocultivation for 3 and 5 days,the rates for PCB15 degradation increased to 42%and 84%,*** radiation-based Fourier transform infrared spectromicroscopy(SR-FTIR)showed that the magnetite particles were tightly adhered to the fungal hyphae and were unevenly distributed on the hyphal ***,cocultivation of the fungus and magnetite nanoparticles significantly enhanced the nanozymatic activity of magnetite.A linear regression model provided a significantly negative correlation(r=−0.96,psurfaces rather than the iron ***,these findings increase our understanding of the powerful capabilities of fungi in terms of stress resistance and adaptation to extreme environments and provide new insights into fungal-mediated degradation of organic po

关键词： Magnetite nanoparticles Nanozymes Oxygen vacancies White rot fungi X-ray photoelectron spectroscopy Synchrotron radiation based FTIR spectromicroscopy Dichlorobiphenyl

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The different responses of planktonic bacteria and archaea to water temperature maintain the stability of their community diversity in dammed rivers

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Ecological Processes 2023年第1期12卷 365-378页

作者： Na Liu Baoli Wang Meiling Yang Wanzhu Li Xinjie Shi Cong-Qiang Liu Institute of surface-earth System Science School of Earth System ScienceTianjin UniversityTianjin 300072China Tianjin Bohai Rim Coastal earth critical zone National Observation and research station Tianjin 300072China

Background Planktonic bacteria and archaea play a key role in river nutrient biogeochemical cycling;however,their respective community assembly and how to maintain their diversity are not well known in dammed ***,a seasonal survey of planktonic bacterial and archaeal community compositions and related environmental factors was conducted in 16 cascade reservoirs and corresponding river waters on the Wujiang River and the Pearl River in southwest China to understand the above *** Deterministic processes dominated bacterial and archaeal community *** structural equation models showed that water temperature can directly or indirectly affect the microbial ***,planktonic bacterial diversity increased with increasing water temperature,while archaea showed the opposite trend;the overall diversity of bacteria and archaea was no significant changes with changeable water *** microbes had a stronger distance–decay relationship than middle and rare ones,and the relationship was stronger in winter and spring than in summer and *** Planktonic bacteria and archaea in dammed rivers had different biogeographic distributions,and water temperature was a key controlling *** different responses of planktonic bacterial and archaeal diversity to water temperature could be due to their different phylogenetic *** ultimately maintained the stability of total microbial community *** study reveals the different responses of planktonic bacteria and archaea to water temperature and perfects the theoretical framework for planktonic microbial biogeography in dammed rivers.

关键词： Planktonic bacteria and archaea Community assembly Diversity Water temperature Cascade reservoirs

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Nanozyme-mediated elemental biogeochemical cycling and environmental effects

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Science China earth Sciences 2021年第7期64卷 1015-1025页

作者： Zhi-Lai CHI Guang-Hui YU Institute of surface-earth System Science School of Earth System ScienceTianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai RimBohai Coastal Critical Zone National Observation and Research StationTianjin UniversityTianjin 300072China College of Resources&Environmental Sciences Nanjing Agricultural UniversityNanjing 210095China

In earth systems,thousands of terragrams(Tg)(1 Tg=10^(12) g)of mineral nanoparticles move around *** mineral nanoparticles have exhibited unexpected intrinsic enzyme-like characteristics(so called“mineral nanozymes”),and are ubiquitously distributed in natural ecosystems such as the atmosphere,oceans,waters,and *** with natural enzymes,these mineral nanozymes have several advantages such as tunable catalytic efficiency and robustness to harsh conditions,e.g.,heat,acid,and alkaline *** mineral nanozymes are new products of multidisciplinary cross-cutting,they have been widely applied in various *** review,for the first time,systematically introduces the species and properties of mineral nanozymes in earth systems,discusses the critical roles played by nanozymes in environmental biogeochemical cycles,compiles the interfacial processes and mechanisms of mineral nanozymes,and provides an overview of the future prospects of mineral nanozymes.

关键词： Nanozymes Peroxidase Nanominerals Reactive oxygen species Biogeochemical cycles

Ecological impacts of the expansion of offshore wind farms on trophic level species of marine food chain

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Journal of Environmental Sciences 2024年第5期139卷 226-244页

作者： Lijing Wang Bangguo Wang Wenxi Cen Rui Xu Yuwei Huang Xin Zhang Yinghui Han Yuanxun Zhang College of Resources and Environment University of Chinese Academy of SciencesBeijing 101408China yanshan earth critical zone and surface fluxes research station University of Chinese Academy of SciencesBeijing 101408China Chinese research Academy of Environmental Sciences Beijing 100012China National Joint research Center for Yangtze River Conservation Beijing 100012China College of Environmental Engineering Beijing University of TechnologyBeijing 100124China Institute of Eco-Environmental Forensics Shandong UniversityQingdao 266237China

The global demand for renewable energy has resulted in a rapid expansion of offshore wind farms(OWFs)and increased attention to the ecological impacts of OWFs on the marine *** reviews mainly focused on the OWFs’impacts on individual species like birds,bats,or *** review collected numerous field-measured data and simulated results to summarize the ecological impacts on phytoplankton,zooplankton,zoobenthos,fishes,and mammals from each trophic level and also analyze their interactions in the marine food *** and zooplankton are positively or adversely affected by the‘wave effect’,‘shading effect’,oxygen depletion and predation pressure,leading to a ±10% fluctuation of primary *** zoobenthos are threatened transiently by habitat destruction with a reduction of around 60% in biomass in the construction stage,their abundance exhibited an over 90% increase,dominated by sessile species,due to the‘reef effect’in the operation *** fishes and mammals are to endure the interferences of noise and electromagnetic,but they are also aggregated around OWFs by the‘reef effect’and‘reserve effect’.Furthermore,the complexity of marine ecosystem would increase with a promotion of the total system biomass by 40% through trophic cascade effects strengthen and resource partitioning alternation triggered by the proliferation of *** suitable site selection,long-term monitoring,and life-cycle-assessment of ecological impacts of OWFs that are lacking in current literature have been described in this review,as well as the carbon emission and deposition.

关键词： Offshore wind farms(OWFs) Ecological impacts Plankton Benthos Fish Mammal

Numerical simulation of landslide-generated tsunamis in lakes:A case study of the Xiluodu Reservoir

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Science China earth Sciences 2023年第2期66卷 393-407页

作者： Ting HUANG Huai ZHANG Yaolin SHI Key Laboratory of Computational Geodynamics College of Earth and Planetary SciencesUniversity of Chinese Academy of SciencesBeijing100049China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai519080China Beijing yanshan earth critical zone National research station Beijing101408China

China has planned and built several world-class cascade high dams in Jinsha River,Dadu River,Lancang River,and Yarlung Zangbo *** complex geological conditions in the reservoir area and numerous large-scale landslide bodies make the potential disaster risk of overflowing and cascade dam failure caused by landslide-generated tsunami under increasing severe ***,the study on describing and predicting the complex dynamic processes of generation,propagation,overflowing,wave setup,and the interaction between tsunami and lakeshore has not been systematically carried *** on the high-order Boussinesq-type equations,the development of the dynamic system of tsunamis in lakes coupled with the landslide process is realized using the finite volume method in this *** verify the accuracy and reliability of the study,the Xiluodu Reservoir is selected as the object to simulate the potential landslide-generated *** factors such as the generation and propagation of tsunamis,dam overflowing,and wave setup in the downstream river are quantitatively evaluated and *** constructed landslide with a total volume of 24×10^(6)m^(3)generates a near-field wave amplitude of about 28 *** maximum wave run-up height is about 95 m,the volume of the dam overflowing water up to 2.13×10^(6)m^(3),and the maximum wave height above the dam crest presents an M-shaped *** LGWs event raises the downstream water level by nearly 40 *** results show that the risk of landslide-generated tsunamis in the reservoir area in China cannot be *** developed Boussinesq-type equations coupled with the landslide dynamics can simulate the whole process of generation,propagation,runup,and estimating the overflowing water volume of the tsunamis in the lake,laying a foundation for the quantitative risk assessment of tsunamis in lakes of high cascade dams in China.

关键词： Tsunamis in lakes Landslide-generated tsunamis Boussinesq-type equations Numerical modeling The Xiluodu Reservoir

Risk assessment and binding mechanisms of potentially toxic metals in sediments from different water levels in a coastal wetland

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Journal of Environmental Sciences 2023年第7期129卷 202-212页

作者： Fusheng Sun Guanghui Yu Xingxing Han Zhilai Chi Yunchao Lang Congqiang Liu Institute of surface-earth System Science School of Earth System ScienceTianjin Key Laboratory of Earth Critical Zone Science and Sustainable Development in Bohai RimTianjin UniversityTianjin 300072China

The excessive accumulation of potentially toxic metals(Pb and Cd)in coastal wetlands is among the main factors threateningwetland ***,the effects ofwater table depth(WTD)on the risk and binding mechanisms of potentially toxic metals in sediments remain ***,sediments from different WTD obtained from a typical coastal wetland were evaluated using a newly developed strategy based on chemical extraction methods coupled with high-resolution *** findings indicated that the WTD of the coastal wetland fluctuates frequently and the average enrichment factor for Pb was categorized as minor,whereas Cd enrichment was categorized as ***-resolution spectroscopy techniques also demonstrated that organic functional groups and partly inorganic compounds(e.g.,Fe-O/Si-O)played a vital role in the binding of Pb and Cd to surface ***,mineral components rather than organic groups were mainly bound to thesemetals in the bottom ***,our findings provide key insights into the potential health effects and binding characteristics of potentially toxic metals in sediments,as well as their dynamic behavior under varying sediment depths at a microscale.

关键词： Coastal wetlands Wetland sediment Toxic metals Risk assessment Synchrotron radiation Binding mechanisms

Performances of six reanalysis profile products in the atmospheric correction of passive microwave data for estimating land surface temperature under cloudy-sky conditions

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International Journal of Digital earth 2022年第1期15卷 296-322页

作者： Xin-Ming Zhu Xiao-Ning Song Pei Leng Fang-Cheng Zhou Liang Gao Da Guo College of Resources and Environment University of Chinese Academy of SciencesBeijingPeople’s Republic of China yanshan earth critical zone and surface fluxes research station University of Chinese Academy of SciencesBeijingPeople’s Republic of China Key Laboratory of Agricultural Remote Sensing Ministry of Agriculture//Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijingPeople’s Republic of China National Satellite Meteorological Centre China Meteorological AdministrationBeijingPeople’s Republic of China

Passive microwave(PMW)observations from the Advanced Microwave Scanning Radiometer 2 provide a way to obtain cloudy land surface temperatures(LSTs).However,atmospheric corrections must be performed on cloudy LSTs due to the cloud effect at higher *** this paper,six reanalyzed profiles,including the fifth-generation European Centre for Medium-range Weather Forecasts Reanalysis(ERA5),Interim Reanalysis(ERA-Interim),Japanese 55-year Reanalysis Data(JRA-55),Modern-Era Retrospective analysis for research and Application V2(MERRA2),National Centers for Environmental Prediction(NCEP)/Final Operational Global Analysis(FNL),and NCEP/Global Forecasting System(GFS),were compared with 2829 radiosonde profiles derived from the University of ***,their performances in correcting the atmospheric effects of LSTs at cloudy skies were *** showed that the ERA5 had the best accuracy in revealing the actual atmospheric conditions,and the RMSEs of transmittance,downward radiance,and upward radiance were about 0.007,2.01,and 1.89 K,*** RMSEs between the estimated LSTs and referenced LSTs varied from 3.15 K of the ERA5 to 6.12 K of the NCEP/FNL,indicating the ERA5 can be recommended for the atmospheric correction of PMW-based LST ***,transmittance accuracy plays an essential role in impacting the LST retrievals in any weather.

关键词： Reanalysis product land surface temperature atmospheric correction AMSR2 evaluation

Water resource conservation promotes synergy between economy and environment in China’s northern drylands

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Frontiers of Environmental Science & Engineering 2022年第3期16卷 13-24页

作者： Yali Liu Jianqing Du Boyang Ding Yuexian Liu Wenjun Liu Anquan Xia Ran Huo Qinwei Ran Yanbin Hao Xiaoyong Cui Yanfen Wang College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China yanshan earth critical zone and surface fluxes research station University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijing 100101China Shandong Tudi Development Group Co. Ltd.Jinan 250101China CAS Center for Excellence in Tibetan Plateau earth Sciences Chinese Academy of SciencesBeijing 100101China

Water resource availability is the major limiting factor for sustainable development in *** change intensifies the conflicting water demands between people and the environment and highlights the importance of effective water resource management for achieving a balance between economic development and environmental *** 2008,Inner Mongolia,typical dryland in northern China,proposed strict regulations on water exploitation and utilization aimed at achieving sustainable *** study is the first to investigate the effectiveness and performance of these long-standing water conservation *** analyses found that the regulations drove industrial transformation,evidenced by the decreasing proportion of environmentally harmful industries such as coal and steel,and the increasing proportion of tertiary industries(especially tourism).Following industrial transformation,economic development decoupled from industrial water consumption and subsequently led to reduced negative environmental *** on these results,adaptive strategies were developed for 12 cities by revealing and integrating their development pathways and relative status in achieving sustainable *** and cooperation between cities were proposed,e.g.,a water trade agreement between eastern Inner Mongolia(an economically underdeveloped region with relatively abundant water resources)and central Inner Mongolia(an economically developed region with high water stress).Such an agreement may enable the holistic achievement of sustainable development across *** integrating the findings of our research,our study presents a reproducible framework for water-management-based sustainable development strategies in drylands.

关键词： Water conservation Environmental protection Industry transformation Evenness Sustainable development Dryland

Effects of upper mantle wind on mantle plume morphology and hotspot track:Numerical modeling

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Science China earth Sciences 2024年第12期67卷 3881-3899页

作者： Jie XIN Huai ZHANG Yaolin SHI Felipe ORELLANA-ROVIROSA College of earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519080China Beijing yanshan earth critical zone National research station University of Chinese Academy of SciencesBeijing 101408China

A mantle thermal plume may be tilted,deflected,or even split-up by mantle lateral flows(mantle wind)during its ascent,which in turn changes the spatial distribution of various geological-magmatic responses,such as magmatic activity in the overriding plate and hotspot tracks on the surface,affecting the reliability of the constraints on absolute plate motion *** research on tilted mantle plumes has focused mainly on the lower/whole mantle *** mantle plumes formed in whole/layered mantle convection suffer lateral tilt in the upper mantle,and how this affects the magmatic activity along the surface hotspot track as well as the plume-related tectonic processes,are important scientific issues in mantle thermalplume dynamics and plate tectonics *** study introduces a thermal Stokes-fluid-dynamics numerical model(in ASPECT software)and pyrolite parameters constrained by mineral physics data,and quantitatively analyzes the tilted/deflected morphology of upper-mantle plumes and the concomitant surface-hotspot location-evolution characteristics under the combined effects of overriding-plate-motion driven flow(Couette)and upper mantle counter-flow(Poiseuille).We find that this composite upper-mantle wind can lead to(1)Plume head-and-upper-conduit horizontal motion in the opposite direction of the overriding plate motion and also with respect to the conduit roots,such that the magmatic spacing is increased;(2)Near-periodic split-up and ascent of a laterally-moving plume conduit,whose split-up/ascent period depends mainly on the thermo-chemical buoyancy of the plume itself;and(3)Under specific conditions of thermo-chemical buoyancy of a main“parent”plume interacting with upper mantle winds,two secondary“child”plumes hundreds of kilometers apart can sprout and ascend sequentially/subsimultaneously through the upper mantle in a very short period of time(2–4 Myr).The resulting oscillating/jumping behavior of hotspot locations along the overriding pl

关键词： Hotspot track Mantle plume Upper mantle wind Absolute plate motion Plume-derived magmatism Numerical modeling