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Frontiers of Education in China 2012年第4期7卷 534-552页

作者： Margaret KETTLE Yifeng YUAN Allan LUKE Robyn EWING huizhong shen Faculty of Education Queensland University of TechnologyBrisbaneQLD 4059Australia Faculty of Education and Social Work The University of SydneySydneyNSW 2006Australia Center for Learning Innovation Queensland University of TechnologyBrisbaneQLD 4059Australia

As increasing numbers of Chinese language learners choose to learn English online,there is a need to investigate popular websites and their language learning *** paper reports on the first stage of a study that analyzed the pedagogical,linguistic,and content features of 25 Chinese English Language Learning(ELL)websites ranked according to their value and importance to *** website ranking was undertaken using a system known as *** aim of the study was to identify the features characterizing popular sites as opposed to those of less popular sites for the purpose of producing a framework for ELL website design in the Chinese *** study found that a pedagogical focus with developmental instructional materials accommodating diverse proficiency levels was a major contributor to website *** language use for translations and teaching directives and intermediate level English for learning materials were also significant features. Content topics included Anglophone/Western and non-Anglophone/Eastern contexts. Overall, popular websites were distinguished by their mediation of access to and scaffolded support for ELL.

关键词： computer-assisted language learning Chinese English Langnage Learning(ELL)in China online learning website design

Influence of fuel mass load,oxygen supply and burning rate on emission factor and size distribution of carbonaceous particulate matter from indoor corn straw burning

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Journal of Environmental Sciences 2013年第3期25卷 511-519页

作者： Guofeng shen Miao Xue Siye Wei Yuanchen Chen Bin Wang Rong Wang huizhong shen Wei Li Yanyan Zhang Ye Huang Han Chen Wen Wei Qiuyue Zhao Bin Li Haisuo Wu Shu Tao Jiangsu Academy of Environmental Sciences Laboratory of Earth Surface Processes College of Urban and Environmental SciencesPeking University

The uncertainty in emission estimation is strongly associated with the variation in emission factor （EF）,which could be influenced by a variety of factors such as fuel properties,stove type,fire management and even methods used in *** impacts of these factors are complicated and often interact with each *** burning experiments were conducted to investigate the influences of fuel mass load,air supply and burning rate on the emissions and size distributions of carbonaceous particulate matter （PM） from indoor corn straw burning in a cooking *** results showed that the EFs of PM （EFPM）,organic carbon （EFOC） and elemental carbon （EFEC） were independent of the fuel mass *** differences among them under different burning rates or air supply amounts were also found to be insignificant （p 〉 0.05） in the tested *** from the indoor corn straw burning was dominated by fine PM with diameter less than 2.1 μm,contributing 86.4%±3.9% of the *** size distribution of PM was influenced by the burning rate and air supply *** average,EF PM,EF OC and EF EC for corn straw burned in a residential cooking stove were （3.84±1.02）,（0.846±0.895） and （0.391±0.350） g/kg,*** PM,EF OC and EF EC were found to be positively correlated with each other （p 〈 0.05）,but they were not significantly correlated with the EF of co-emitted CO,suggesting that special attention should be paid to the use of CO as a surrogate for other incomplete combustion pollutants.

关键词： indoor corn straw burning emission factor size distribution influencing factor

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中国环境治理经验：从大气污染防治到“双碳”目标

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科学 2024年第4期76卷 1-6+69页

作者：王戎曾嘉伟陈祉叶王怡静沈惠中沈国锋曹军骥汤绪复旦大学环境科学与工程系/IRDR多风险互联与治理国际卓越中心复旦大学环境科学与工程系南方科技大学环境科学与工程学院北京大学城市与环境学院中国科学院大气物理研究所复旦大学大气与海洋科学系/大气科学研究院/复旦发展研究院/IRDR多风险互联与治理国际卓越中心

“双碳”是中国制定的战略性碳减排目标，而减污降碳则是我国高质量发展的需要和社会主义现代化的重要内容。尽管人均碳排放低于主要发达国家，中国仍面临实现“双碳”目标和改善生态环境的双重压力。过去十几年，中国在国内积极开展大... 详细信息

“双碳”是中国制定的战略性碳减排目标，而减污降碳则是我国高质量发展的需要和社会主义现代化的重要内容。尽管人均碳排放低于主要发达国家，中国仍面临实现“双碳”目标和改善生态环境的双重压力。过去十几年，中国在国内积极开展大气污染防治，取得的显著成效为中国实现“双碳”目标提供了宝贵经验。本文总结中国实现大气污染防治的历程与经验，从减污降碳协同的需求角度出发，为国家实现“双碳”目标提供参考。

关键词：碳中和大气污染防治环境治理

Air pollution and inhalation exposure to particulate matter of different sizes in rural households using improved stoves in central China

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Journal of Environmental Sciences 2018年第1期30卷 87-95页

作者： Weijian Liu Guofeng shen Yuanchen Chen huizhong shen Ye Huang Tongchao Li Yilong Wang Xiaofang Fu Shu Tao Wenxin Liu Yibo Huang-Fu Weihao Zhang Chunyu Xue Guangqing Liu Fuyong Wu Minghung Wong MOE Key Laboratory of Earth Surface Processes College of Urban and Environmental SciencesPeking UniversityBeijing 100871China Beijing University of Chemical Technology Beijin9 100029China Croucher Institute of Environmental Sciences and Biology Department Hong Kong Baptist UniversityHong KongChina Consortium on Health EnvironmentEducation and Research(CHEER)Department of Science and Environmental StudiesHong Kong Institute of EducationTai PoHong KongChina

Household air pollution is considered to be among the top environmental risks in *** examine the performance of improved stoves for reduction of indoor particulate matter（PM） emission and exposure in rural households, individual inhalation exposure to size-resolved PM was investigated using personal portable samplers carried by residents using wood gasifier stoves or improved coal stoves in a rural county in Central *** of PM with different sizes in stationary indoor and outdoor air were also monitored at paired sites. The stationary concentrations of size-resolved PM in indoor air were greater than those in outdoor air, especially finer particles PM0.25. The daily averaged exposure concentrations of PM0.25, PM1.0, PM2.5 and total suspended particle for all the surveyed residents were 74.4 ± 41.1, 159.3 ± 74.3, 176.7 ± 78.1 and 217.9 ± 78.1 μg/m3,respectively. Even using the improved stoves, the individual exposure to indoor PM far exceeded the air quality guideline by WHO at 25 μg/m3. Submicron particles PM1.0 were the dominant PM fraction for personal exposure and indoor and outdoor air. Personal exposure exhibited a closer correlation with indoor PM concentrations than that for outdoor concentrations. Both inhalation exposure and indoor air PM concentrations in the rural households with gasifier firewood stoves were evidently lower than the reported results using traditional firewood stoves. However, local governments in the studied rural areas should exercise caution when widely and hastily promoting gasifier firewood stoves in place of improved coal stoves, due to the higher PM levels in indoor and outdoor air and personal inhaled exposure.

关键词： Particulate matter Daily average exposure Size distribution Improved stoves Rural households in Central China

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Emissions of parent, nitrated, and oxygenated polycyclic aromatic hydrocarbons from indoor corn straw burning in normal and controlled combustion conditions

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Journal of Environmental Sciences 2013年第10期25卷 2072-2080页

作者： Guofeng shen Miao Xue Siye Wei Yuanchen Chen Bin Wang Rong Wang Yan Lv huizhong shen Wei Li Yanyan Zhang Ye Huang Han Chen Wen Wei Qiuyue Zhao Bing Li Haisuo Wu Shu Tao Laboratory of Earth Surface Processes College of Urban and Environmental Sciences Peking University Jiangsu Provincal Academy of Environmental Sciences

Emission factors （EFs） of parent polycyclic aromatic hydrocarbons （pPAHs）, nitrated PAHs （nPAHs）, and oxygenated PAHs （oPAHs） were measured for indoor corn straw burned in a brick cooking stove under different burning conditions. The EFs of total 28 pPAHs, 6 nPAHs and 4 oPAHs were （7.9 ±3.4）, （6.5 ±1.6）×10^-3, and （6.1 ±1.4）×10^-1mg/kg, respectively. Fuel charge size had insignificant influence on the pollutant emissions. Measured EFs increased significantly in a fast burning due to the oxygen deficient atmosphere formed in the stove chamber. In both restricted and enhanced air supply conditions, the EFs of pPAHs, nPAHs and oPAHs were significantly higher than those measured in normal burning conditions. Though EFs varied among different burning conditions, the composition profiles and calculated isomer ratios were similar, without significant differences. The results from the stepwise regression model showed that fuel burning rate, air supply amount, and modified combustion efficiency were the three most significant influencing factors, explaining 72%-85% of the total variations.

关键词： polycyclic aromatic hydrocarbons PAH derivatives emission factor influencing factor indoor crop straw burning

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Cohort-based long-term ozone exposure-associated mortality risks with adjusted metrics:A systematic review and meta-analysis

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The Innovation 2022年第3期3卷 43-55页

作者： Haitong Zhe Sun Pei Yu Changxin Lan Michelle WLWan Sebastian Hickman Jayaprakash Murulitharan huizhong shen Le Yuan Yuming Guo Alexander T.Archibald Centre for Atmospheric Science Yusuf Hamied Department of ChemistryUniversity of CambridgeCambridge CB21EWUK Department of Earth Sciences University of CambridgeCambridge CB23EQUK School of Public Health and Preventive Medicine Monash UniversityMelbourneVIC 3004Australia Institute of Reproductive and Child Health Key Laboratory of Reproductive HealthNational Health Commission of the People’s Republic of ChinaBeijing 100191China Department of Epidemiology and Biostatistics School of Public HealthPeking UniversityBeijing 100191China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China National Centre for Atmospheric Science Cambridge CB21EWUK

Long-term ozone(O_(3))exposure may lead to non-communicable diseases and increase mortality ***,cohort-based studies are relatively rare,and inconsistent exposure metrics impair the credibility of epidemiological evidence *** provide more accurate meta-estimations,this study updates existing systematic reviews by including recent studies and summarizing the quantitative associations between O_(3) exposure and cause-specific mortality risks,based on unified exposure ***-metric conversion factors were estimated linearly by decadal observations during 1990-2019.

关键词： mortality ozone diseases

Emerging contaminants:A One Health perspective

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The Innovation 2024年第4期5卷 140-170,139页

作者： Fang Wang Leilei Xiang Kelvin Sze-Yin Leung Martin Elsner Ying Zhang Yuming Guo Bo Pan Hongwen Sun Taicheng An Guangguo Ying Bryan WBrooks Deyi Hou Damian EHelbling Jianqiang Sun Hao Qiu Timothy MVogel Wei Zhang Yanzheng Gao Myrna JSimpson Yi Luo Scott XChang Guanyong Su Bryan MWong Tzung-May Fu Dong Zhu Karl JJobst Chengjun Ge Frederic Coulon Jean Damascene Harindintwali Xiankui Zeng Haijun Wang Yuhao Fu Zhong Wei Rainer Lohmann Changer Chen Yang Song Concepcion Sanchez-Cid Yu Wang Ali El-Naggar Yiming Yao Yanran Huang Japhet Cheuk-Fung Law Chenggang Gu huizhong shen Yanpeng Gao Chao Qin Hao Li Tong Zhang Natàlia Corcoll Min Liu Daniel SAlessi Hui Li Kristian KBrandt Yolanda Pico Cheng Gu Jianhua Guo Jianqiang Su Philippe Corvini Mao Ye Teresa Rocha-Santos Huan He Yi Yang Meiping Tong Weina Zhang Fidèle Suanon Ferdi Brahushi Zhenyu Wang Syed AHashsham Marko Virta Qingbin Yuan Gaofei Jiang Louis A.Tremblay Qingwei Bu Jichun Wu Willie Peijnenburg Edward Topp Xinde Cao Xin Jiang Minghui Zheng Taolin Zhang Yongming Luo Lizhong Zhu Xiangdong Li DamiàBarceló Jianmin Chen Baoshan Xing Wulf Amelung Zongwei Cai Ravi Naidu Qirong shen Janusz Pawliszyn Yong-guan Zhu Andreas Schaeffer Matthias C.Rillig Fengchang Wu Gang Yu James M.Tiedje State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Chemistry Hong Kong Baptist UniversityHong KongChina HKBU Institute of Research and Continuing Education Shenzhen Virtual University ParkShenzhenChina Technical University of Munich TUM School of Natural SciencesInstitute of Hydrochemistry85748 GarchingGermany School of Resources&Environment Northeast Agricultural UniversityHarbin 150030China Climate Air Quality Research UnitSchool of Public Health and Preventive MedicineMonash UniversityMelbourneVICAustralia Faculty of Environmental Science&Engineering Kunming University of Science&TechnologyKunming 650500China Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control School of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Ministry of Education Key Laboratory of Environmental Theoretical Chemistry South China Normal UniversityGuangzhouGuangdong 510006China Department of Environmental Science Baylor UniversityWacoTXUSA Center for Reservoir and Aquatic Systems Research(CRASR) Baylor UniversityWacoTXUSA School of Environment Tsinghua UniversityBeijing 100084China School of Civil and Environmental Engineering Cornell UniversityIthacaNY 14853USA Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province Zhejiang University of TechnologyHangzhou 310014China School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Laboratoire d’Ecologie Microbienne Universite Claude Bernard Lyon 1UMR CNRS 5557UMR INRAE 1418VetAgro Sup69622 VilleurbanneFrance Department of Pla

Environmental pollution is escalating due to rapid global development that often prioritizes human needs over planetary *** global efforts to mitigate legacy pollutants,the continuous introduction of new substances remains a major threat to both people and the *** response,global initiatives are focusing on risk assessment and regulation of emerging contaminants,as demonstrated by the ongoing efforts to establish the UN’s Intergovernmental Science-Policy Panel on Chemicals,Waste,and Pollution *** review identifies the sources and impacts of emerging contaminants on planetary health,emphasizing the importance of adopting a One Health *** for monitoring and addressing these pollutants are discussed,underscoring the need for robust and socially equitable environmental policies at both regional and international *** actions are needed to transition toward sustainable pollution management practices to safeguard our planet for future generations.

关键词： pollution planet contaminants

Vertically-resolved indoor measurements of air pollution during Chinese cooking

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Environmental Science and Ecotechnology 2022年第4期12卷 37-45页

作者： Shuxiu Zheng huizhong shen Guofeng shen Yilin Chen Jianmin Ma Hefa Cheng Shu Tao College of Urban and Environmental Sciences Laboratory for Earth Surface ProcessesSino-French Institute for Earth System SciencePeking UniversityBeijing100871China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen518055China Guangdong Provincial Observation and Research Station for Coastal Atmosphere and Climate of the Greater Bay Area Southern University of Science and TechnologyShenzhen518055China

Chinese cooking features several unique processes,e.g.,stir-frying and pan-frying,which represent important sources of household air ***,factors affecting household air pollution and the vertical variations of indoor pollutants during Chinese cooking are less ***,using low-cost sensors with high time resolutions,we measured concentrations of five gas species and particulate matter(PM)in three different sizes at multiple heights in a kitchen during eighteen different Chinese cooking *** found indoor gas species were elevated by 21%-106%during cooking,compared to the background,and PMs were elevated by 44%-159%.Vertically,the pollutants concentrations were highly variable during cooking *** species generally showed a monotonic increase with height,while PMs changed more diversely depending on the cooking activity's *** cooking,e.g.,stir-frying,pan-frying,or cooking on high heat,tended to shoot PMs to the upper layers,while moderate ones left PMs within the breathing *** with different heights would be subject to different levels of household air pollution exposure during *** high vertical variability challenges the current indoor standard that presumes a uniform pollution level within the breathing zone and thus has important implications for public health and policy making.

关键词： Indoor air pollution Chinese cooking Vertical distribution Particulate matter

Substantial transition to clean household energy mix in rural China

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National Science Review 2022年第7期9卷 137-151页

作者： Guofeng shen Rui Xiong Yanlin Tian Zhihan Luo Bahabaike Jiangtulu Wenjun Meng Wei Du Jing Meng Yuanchen Chen Bing Xue Bin Wang Yonghong Duan Jia Duo Fenggui Fan Lei Huang Tianzhen Ju Fenggui Liu Shunxin Li Xianli Liu Yungui Li Mu Wang Ying Nan Bo Pan Yanfang Pan Lizhi Wang Eddy Zeng Chao Zhan Yilin Chen huizhong shen Hefa Cheng Shu Tao College of Urban and Environmental Sciences Peking University Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)Nanjing University of Information Science and Technology Institute of Reproductive and Child Health Peking University Laboratory of Geographic Information Science School of Geographic Sciences East China Normal University The Bartlett School of Sustainable Construction University College London College of Environment Zhejiang University of Technology Institute of Applied Ecology Chinese Academy of Sciences Department of Epidemiology and Biostatistics School of Public Health Peking University College of Resources and Environment Shanxi Agricultural University Xinjiang Key Laboratory of Environmental Pollution and Bioremediation Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences National Engineering Technology Research Center for Desert-Oasis Ecological Construction Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences University of Chinese Academy of Sciences School of Geography and Tourism Anhui University School of Environment Nanjing University College of Geography and Environmental Science Northwest Normal University College of Geographical Science Qinghai Normal University Academy of Plateau Science and Sustainability College of Chemistry Chemical Engineering and Environment Minnan Normal University School of Environmental Science and Engineering Hubei Polytechnic University Department of Environmental Engineering Southwest University of Science and Technology College of Food Science Tibet Agricultural and Animal Husbandry University College of Geography and Ocean Sciences Yanbian University Faculty of Environmental Science and Engineering Kunming University of Science and Technology College of Geography and Environmental Science Henan University College of Ecology and Environment Hainan University School of Environment Ji

The household energy mix has significant impacts on human health and climate,as it contributes greatly to many health-and climate-relevant air *** to the well-established urban energy statistical system,the rural hous ehold energy statistical system is incomplete and is often associated with high *** a nationwide investigation,this study reve aled high contributions to energy supply from coal and biomass fuels in the rural household energy sector,while electricity comprised ～20%.Stacking(the use of multiple sources of energy) is significant,and the average number of energy types was 2.8 per *** to 2012,the consumption of biomass and coals in 2017 decreased by 45% and 12%,respectively,while the gas consumption amount increased by 204%.Increased gas and decreased coal consumptions were mainly in cooking,while decreased biomass was in both cooking(41%) and heating(59%).The time-sharing fraction of electricity and gases(E&G) for daily cooking grew,reaching 69% in 2017,but for space heating,traditional solid fuels were still dominant,with the national average shared fraction of E&G being only 20%.The non-uniform spatial distribution and the non-linear increase in the fraction of E&G indicated challenges to achieving universal access to modern cooking energy by 2030,particularly in less-developed rural and mountainous *** some non-typical heating zones,the increased share of E&G for heating was significant and largely driven by income growth,but in typical heating zones,the time-sharing fraction was <5 % and was not significantly increased,except in areas with policy *** intervention policy not only led to dramatic increases in the clean energy fraction for heating but also accelerated the clean cooking *** income,higher education,younger age,less energy/stove stacking and smaller family size positively impacted the clean energy transition.

关键词： household energy mix energy transition clean heating modern energy sustainable development

Global brown carbon emissions from combustion sources

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Environmental Science and Ecotechnology 2022年第4期12卷 46-53页

作者： Rui Xiong Jin Li Yuanzheng Zhang Lu Zhang Ke Jiang Huang Zheng Shaofei Kong huizhong shen Hefa Cheng Guofeng shen Shu Tao Laboratory for Earth Surface Processes College of Urban and Environmental SciencesPeking UniversityBeijing100871China Department of Environmental Science and Technology School of Environmental StudiesChina University of GeosciencesWuhan430074China School of Environmental Sciences and Engineering Southern University of Science and TechnologyShenzhen518055China

Light-absorbing organic carbon(OC),sometimes known as Brown Carbon(BrC),has been recognized as an important fraction of carbonaceous aerosols substantially affecting radiative *** study firstly developed a bottom-up estimate of global primary BrC,and discussed its spatiotemporal distribution and source contributions from 1960 to *** global total primary BrC emission from both natural and anthropogenic sources in 2010 was 7.26(5.98-8.93 as an interquartile range)Tg,with 43.5%from anthropogenic *** primary BrC emissions were in regions such as Africa,South America,South and East Asia with natural sources(wild fires and deforestation)contributing over 70%in the former two regions,while in East Asia,anthropogenic sources,especially residential solid fuel combustion,accounted for over 80%of the regional total BrC ***,the historical trend was mainly driven by anthropogenic sources,which increased from 1960 to 1990 and then started to *** emissions significantly impacted on emissions and temporal trends that varied by *** South and Southeast Asia,the emissions increased obviously due to population growth and a slow transition from solid fuels to clean modern energies in the residential *** is estimated that in primary OC,the global average was about 20%BrC,but this ratio varied from 13%to 47%,depending on sector and *** areas with high residential solid fuel combustion emissions,the ratio was generally twice the value in other *** in the work are associated with the concept of BrC and measurement technologies,pointing to the need for more studies on BrC analysis and quantification in both emissions and the air.

关键词： Brown carbon Emission inventory Historical changes Spatial distribution