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6th International Conference on environmental Informatics, ISEIS 2007

作者： Liu, G.Y. Yang, Z.F. Chen, B. State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing100875 China

The objective of this study is to measure and evaluate the healthy levels of urban ecosystems, employing an indices framework and a novel emergy-based index. Characteristics and comparative implications of the temporal variation of the urban ecosystem healthy levels are also outlined. Considering four factors including vigor (V), organizational structure (O), resilience (R) and function maintenance (F), emergy-based urban ecosystem health index (EUEHI) is established and employed to measure and evaluate the relative healthy levels among various ecosystems of Beijing, Shanghai, Tianjin and Chongqing as the typical Chinese cities. It is found that the integrated index of urban ecosystem health of these four cities followed as the sequence: Chongqing Beijing> Shanghai>Tianjin. In addition, linking up with the single-factor analysis, it shows that the key factors of urban ecosystem health are the promotion of urban metabolism function for an increased vigor, the protection of natural ecosystem for organizational structure, the decrease of socioeconomic development pressure for a maintaining resilience, and the derive of benefits for a continual function maintenance.

关键词： Ecosystems

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Algal-bloom control by allelopathy of aquatic macrophytes—A review

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Frontiers of environmental Science & Engineering 2008年第4期2卷 421-438页

作者： Hongying HU Yu HONG Environmental Simulation and Pollution Control State Key Joint Laboratory Department of Environmental Science and EngineeringTsinghua UniversityBeijing 100084China College of Environmental Science and Engineering Beijing Forestry UniversityBeijing 100083China

Algal-bloom control is an important issue for water environment protection as it induces several negative impacts on the lives of aquatic organisms,aquaculture,landscaping,and human *** development of an environment-friendly,cost-effective,and convenient alternative for controlling algal bloom has gained much *** the allelopathy of aquatic macrophytes as a novel and safe method for algal-bloom control is a promising *** paper reviews the development and potential application about allelopathy of aquatic plants on algae,including the allelopathic research history,the potential research problems,the research methodology,and the reported aquatic macrophytes and their inhibitory *** modes of inhibition action of allelochemicals on algae,possible ways for application,and future development directions of research on algal-bloom control by aquatic macrophytes were also presented.

关键词： allelopathy allelochemical aquatic macrophyte algae algal bloom

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Understanding Surface Water-groundwater Conversion Relationship and Associated Hydrogeochemistry Evolution in the Upper Reaches of Luan River Basin, North China

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Journal of Earth Science 2024年第3期35卷 1010-1023页

作者： Le Zhao Chunli Su Wenbo Liu Xianjun Xie School of Environmental Studies China University of GeosciencesWuhan 430078China State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution Ministry of Ecology and EnvironmentWuhan 430078China China Geological Environmental Monitoring Institute Beijing 100081China

Luan River is the main water source in Beijing-Tianjin-Hebei region,northern China,where the groundwater system is vulnerable and pollution issue is *** is significant for regional groundwater resources protection to identify the hydrogeochemistry evolution and affecting factors along flow direction occurred in the upper reaches,especially the surface water-groundwater(SWGW)conversion *** this study,recharge,conversion and geochemistry evolution of SW and GW were elucidated based on physical-hydrochemical indicators and stable isotopes in 36 GW samples and 20 SW samples,which were collected in July 2019 and July *** factor analysis was further utilized to determine the main factors responsible for regional hydrogeochemical *** indicate that GW recharged SW in plateau area,and SW and GW recharged each other in typical Alpine valley *** hydrochemical types are HCO3-Ca·Mg and HCO3-Ca,and the hydrochemical evolution is dominated by weathering of silicate and carbonate *** cation exchange adsorption has minor impact on groundwater *** rise of SO42-and NO3-contents in groundwater is related to industrial and agricultural *** main controlling factors of SW hydrochemical components included recharge from groundwater,industrial and mining activities,explaining 90.04%of data ***,water-rock interaction,agricultural and domestic sewage are responsible for GW quality,accounting for 83.38%.

关键词： groundwater water sources conversion relationship hydrogeochemical characteristics evolutional processes water-rock interaction factor analysis Luan River Basin.

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Vertical Profiles of Volatile Organic Compounds in Suburban Shanghai

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Advances in Atmospheric Sciences 2021年第7期38卷 1177-1187页

作者： Yuhan LIU Hongli WANG Shengao JING Ming ZHOU Shenrong LOU Kun QU Wanyi QIU Qian WANG Shule LI Yaqin GAO Yusi LIU Xiaobing LI Zhong-Ren PENG Junhui CHEN Keding LU State Key Joint Laboratory of Environment Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China State Key Laboratory of Severe Weather&Key Laboratory for Atmospheric Chemistry of China Meteorology Administration Chinese Academy of Meteorological SciencesBeijing 100081China Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality Institute for Environmental and Climate ResearchJinan UniversityGuangzhou 510632China International Center for Adaptation Planning and Design College of DesignConstruction and PlanningUniversity of FloridaGainesville 32611FLUSA Sichuan Academy of Environmental Science Sichuan 610041China

As Volatile Organic Compounds(VOCs)are one of the precursors of ozone,their distribution and variable concentrations are highly related to local ozone pollution *** this study,we obtained vertical profiles of VOCs in Shanghai’s Jinshan district on 8 September and 9 September in 2016 to investigate their distribution and impact on local atmospheric oxidation in the near surface *** samples were collected from heights between 50 m and 400 m by summa canisters using an unmanned aerial vehicle(UAV).Concentrations of VOCs(VOCs refers to the 52 species measured in this study)varied minimally below 200 m,and decreased by 21.2%from 100 m to 400 *** concentrations of VOCs above 200 m decreased significantly in comparison to those below 200 *** proportions of alkanes and aromatics increased from 55.2%and 30.5%to 57.3%and 33.0%,***,the proportion of alkenes decreased from 13.2%to 8.4%.Toluene and m/p-xylene were the key species in the formation of SOA and *** component analysis(PCA)revealed that the VOCs measured in this study mainly originated from industrial emissions.

关键词： VOCs vertical profiles secondary organic aerosol PCA Ozone

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Gas-to-particle conversion of atmospheric ammonia and sampling artifacts of ammonium in spring of Beijing

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Science China Earth Sciences 2015年第2期58卷 345-355页

作者： WEI LianFang DUAN JingChun TAN JiHua MA YongLiang HE KeBin WANG ShuXiao HUANG XiaoFeng ZHANG YuanXun College of Resources and Environment University of the Chinese Academy of Sciences State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental Sciences State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua University State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Key Laboratory for Urban Habitat Environmental Science and Technology School of Environment and EnergyPeking University Shenzhen Graduate School

PM2.5 and gaseous pollutants(SO2,HNO2,HNO3,HCl,and NH3) were simultaneously collected by Partisol- Model 2300 Sequential Speciation Sampler with denuder-filter pack system in the spring of 2013 in ***-soluble inorganic ions and gaseous pollutants were measured by Ion *** showed that the concentrations of NH3,NH+ 4and PM2.5 had similar diurnal variation trends and their concentrations were higher at night than in *** results of gas-to-particle conversion revealed that [NH3]:[NH+4] ratio was usually higher than 1; however,it was less than 1 and the concentration of NH+4 increased significantly during the haze episode,indicating that NH3 played an important role in the formation of fine *** on the sampling artifacts suggested that the volatilization loss of NH+4 was prevalent in the traditional single filter-based *** excess loss of HNO3 and HCl resulted from ammonium-poor aerosols and semivolatile inorganic species had severe losses in the clean day,whereas the mass of NH+ 4was usually overestimated during the single filter-based sampling due to the positive *** analysis was used to evaluate the influence of meteorological conditions on the volatilization loss of NH+*** was found that the average relative humidity and temperature had great effects on the loss of NH+*** loss of NH+4 was significantly under high temperature and low humidity,and tended to increase with the increasing of absorption of gaseous pollutants by *** total mass of volatile loss of NH+4,NO- 3and Cl- could not be ignored and its maximum value was 12.17 μg *** it is important to compensate sampling artifacts for semivolatile inorganic species.

关键词： ammonia gas-to-particle conversion PM2.5 ammonium sampling artifacts diurnal variation

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Air pollutant emissions induced by rural-to-urban migration during China's urbanization(2005-2015)

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environmental Science and Ecotechnology 2022年第2期10卷 45-53页

作者： Guang Shi Xi Lu Hongxia Zhang Haotian Zheng Zhonghua Zhang Shi Chen Jia Xing Shuxiao Wang State Key Joint Laboratory of Environment Simulation and Pollution Control and School of Environment Tsinghua UniversityBeijing100084PR China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084PR China Beijing Laboratory of Environmental Frontier Technologies Tsinghua UniversityBeijing100084PR China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing100084PR China School of Applied Economics Renmin University of ChinaBeijing100872PR China

As the world's most populous country,China has witnessed rapid urbanization in recent decades,with population migration from rural to urban(RU)regions as the major driving *** to the large gap between rural and urban consumption and investment level,large-scale RU migration impacts air pollutant emissions and creates extra uncertainties for air quality ***,we integrated population migration assessment,an environmentally extended inputeoutput model and structural decomposition analysis to evaluate the NOx,SO2 and primary PM2.5 emissions induced by RU migration during China's urbanization from 2005 to *** results show that RU migration increased air pollutant emissions,while the increases in NOx and SO2 emissions peaked in approximately 2010 at 2.4 Mt and 2.2 Mt,accounting for 9.2%and 8.7%of the national emissions,*** primary PM2.5 emissions induced by RU migration also peaked in approximately 2012 at 0.3 Mt,accounting for 2.8%of the national *** indirect emissions embodied in consumption and investment increased,while household direct emissions *** widening gap between urban and rural investment and consumption exerted a major increasing effect on migration-induced emissions;in contrast,the falling emission intensity contributed the most to the decreasing effect benefitting from end-of-pipe control technology applications as well as improving energy *** peak of air pollutant emissions induced by RU migration indicates that although urbanization currently creates extra environmental pressure in China,it is possible to reconcile urbanization and air quality improvement in the future with updating urbanization and air pollution control policies.

关键词： Urbanization Population migration Air pollutant emission reduction Inputeoutput model Structural decomposition analysis

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Deciphering decadal urban ozone trends from historical records since 1980

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National Science Review 2024年第11期11卷 117-129页

作者： Haolin Wang Xiao Lu Paul I.Palmer Lin Zhang Keding Lu Ke Li Tatsuya Nagashima Ja-Ho Koo Hiroshi Tanimoto Haichao Wang Meng Gao Cheng He Kai Wu Shaojia Fan Yuanhang Zhang School of Atmospheric Sciences Sun Yat-sen University and Key Laboratory of Tropical Atmosphere-Ocean System Ministry of Education Guangdong Provincial Observation and Research Station for Climate Environment and Air Quality Change in the Pearl River Estuary Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) School of Geo Sciences University of Edinburgh National Centre for Earth Observation University of Edinburgh Laboratory for Climate and Ocean-Atmosphere Studies Department of Atmospheric and Oceanic SciencesSchool of PhysicsPeking University State Key Joint Laboratory of Environmental Simulation and Pollution Control The State Environmental Protection Key Laboratory of Atmospheric Ozone Pollution ControlCollege of Environmental Sciences and Engineering Peking University Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment Technology School of Environmental Science and Engineering Nanjing University of Information Science &Technology National Institute for Environmental Studies Department of Atmospheric Sciences Yonsei University Department of Geography Hong Kong Baptist University Department of Civil and Environmental Engineering University of California

Ozone pollution is a major environmental threat to human health. Timely assessment of ozone trends is crucial for informing environmental policy. Here we show that for the most recent decade（2013–2022） in the northern hemisphere, warm-season（April–September） mean daily 8-h average maximum ozone increases much faster in urban regions with top ozone levels(mainly in the North China Plain, 1.2 ± 1.3 ppbv year-1) than in other, low-ozone regions(0.2 ± 0.9 ppbv year-1). These trends widen the ozone differences across urban regions, and increase extreme pollution levels and health threats from a global perspective. Comparison of historical trends in different urban regions reveals that ozone increases in China during 2013–2022 differ in magnitude and mechanisms to historical periods in other regions since *** reflects a unique chemical environment characterized by exceptionally high nitrogen oxides and aerosol concentrations, where reducing ozone precursor emissions leads to substantial ozone *** increase in China has slowed down in 2018–2022 compared to 2013–2017, driven by ongoing emission reductions, but with ozone-favorable weather conditions. Historical ozone evolution in Japan and South Korea indicates that ozone increases should be suppressed with continuous emission *** temperature and associated wildfires have also reversed ozone decreases in the USA and Europe,with anthropogenic ozone control slowing down in recent decades.

关键词： air quality surface ozone trends

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Coupling Ga(OH)3 and chromate as a universal cocatalyst for CO2 photoreduction by H2O

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Catalysis Today 2025年 458卷

作者： Xu, Xuanwen Lu, Yuehao Wang, Shuying Fan, Lele Dong, Pengyu Wang, Zheng Jiang, Ruiyu Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng224051 China School of Chemistry and Chemical Engineering Yancheng Institute of Technology Yancheng224051 China School of Mechanics and Safety Engineering Zhengzhou University 100 Kexue Road Henan Zhengzhou450001 China State Key Joint Laboratory of Environment Simulation and Pollution Control Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing100085 China

Development of effective and universal cocatalysts are very important to the photocatalytic conversion of CO2 by H2O. Herein, CO evolution from this reaction was successfully promoted by co-catalytic coupling featuring Ga(OH)3 loading onto photocatalyst surfaces and in situ addition of Na2CrO4. This strategy exhibited excellent universality for a series of Ta- and Ga-based photocatalysts. Modifications of Ga(OH)3 created active sites for CO production on the photocatalyst surfaces. The in situ addition of Na2CrO4 improved CO evolution activity when two factors were satisfied: (1) active sites for CO evolution were created using the proper cocatalysts and (2) the photocatalyst surfaces were sufficiently quenched by hydroxide ions. © 2025 Elsevier B.V.

关键词： Photocatalytic activity

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Air pollution health burden embodied in China's supply chains

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environmental Science and Ecotechnology 2023年第4期16卷 147-155页

作者： Hongyan Zhao Ruili Wu Yang Liu Jing Cheng Guannan Geng Yixuan Zheng Hezhong Tian Kebin He Qiang Zhang Center for Atmospheric Environmental Studies School of EnvironmentBeijing Normal UniversityBeijing100875China Ministry of Education Key Laboratory for Earth System Modelling Department of Earth System ScienceTsinghua UniversityBeijing100084China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing100084China State Environmental Protection Key Laboratory of Quality Control in Environmental Monitoring China National Environmental Monitoring CentreBeijing100012China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing100012China

Product trade plays an increasing role in relocating production and the associated air pollution impact among sectors and *** a comprehensive depiction of atmospheric pollution redistribution through trade chains is missing,which may hinder targeted clean air cooperation among sectors and ***,we combined five state-of-the-art models from physics,economy,and epidemiology to track the anthropogenic fine particle matters(PM_(2.5))related premature mortality along the supply chains within China in *** results highlight the key sectors that affect PM_(2.5)-related mortality from both production and consumption *** consumption-based effects from food,light industry,equipment,construction,and services sectors,caused 2e22 times higher deaths than those from a production perspective and totally contributed 63%of the national *** a cross-boundary perspective,25.7%of China's PM_(2.5)-related deaths were caused by interprovincial trade,with the largest transfer occurring from the central and northern regions to well-developed east coast *** investment dominated the cross-boundary effect(56%of the total)by involving substantial equipment and construction products,which greatly rely on product exports from regions with specific *** supply chain-based analysis provides a comprehensive quantification and may inform more effective joint-control efforts among associated regions and sectors from a health risk perspective.

关键词： China Air pollution Mortality Trade Supply chain

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Effect of ultraviolet irradiation and chlorination on ampicillin-resistant Escherichia coli and its ampicillin resistance gene

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Frontiers of environmental Science & Engineering 2016年第3期10卷 522-530页

作者： Yuchen PANG Jingjing HUANG Jinying XI Hongying HU Yun ZHU Environmental Simulation and Pollution Control State Key Joint Laboratory School of Environment Tsinghua University Beijing 100084 China State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC) Graduate School at Shenzhen Tsinghua University Shenzhen 518055 China China Power Engineering Consulting Group Corporation Beijing 100120 China Institute of Biophysics Chinese Academy of Sciences Beijing 100101 China School of Life Sciences Tsinghua University Beijing 100084 China

Antibiotic resistance is a serious public health risk that may spread via potable and reclaimed water. Effective disinfection is important for inactivation of antibiotic-resistant bacteria and disruption of antibiotic resistance genes. Ampicillin is a widely prescribed antibiotic but its effectiveness is increasingly undermined by resistance. In this study, changes in ampicillin resistance for Escherichia coli （E. coli） CGMCC 1.1595 were analyzed after exposure to different doses of ultraviolet （UV） or chlorine, and damage incurred by the plasmid encoding ampicillin resistance gene blaTEM-1 was assessed. We reported a greater stability in ampicillinresistant E. coli CGMCC 1.1595 after UV irradiation or chlorination when compared with previously published data for other E. coli strains. UV irradiation and chlorination led to a shift in the mortality frequency distributions of ampicillin-resistant E. coli when subse-quently exposed to ampicillin. The ampicillin hemiinhibitory concentration （IC5o） without disinfection was 3800mg·L^-1, and an increment was observed after UV irradiation or chlorination. The IC50 of ampicillin-resistant E. coli was 1.5-fold higher at a UV dose of 40 mJ·cm^-2, and was 1.4-fold higher when exposed to 2.0 mg·L^-1 chlorine. These results indicate that UV irradiation and chlorination can potentially increase the risk of selection for E. coli strains with high ampicillin resistance. There was no evident damage to blaTEM-1 after 1-10 mg Cl2· L^-1 chlorination, while a UV dose of 80 mJ·cm^-2 yielded a damage ratio for blaTEM-1 of approximately ***, high UV doses are required for effective disruption of antibiotic resistance genes in bacteria.

关键词： antibiotic resistance Escherichia coli ampicillin resistance gene ultraviolet irradiation chlorination

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