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Science Bulletin 2023年第13期68卷 1447-1455,M0004页

作者：常运华凌清扬盖鑫磊袁相洋周升钱程凯毛鉴炯黄丹丹胡磬遥鲁君崔世杰高雅琴陆轶群朱亮谭稳郭松胡敏王红丽黄成黄汝锦张远航胡建林 Collaborative Innovation center on Forecast and Evaluation of Meteorological Disasters NUIST Center on Atmospheric EnvironmentNanjing University of Information Science&Technology(NUIST)Nanjing 210044China Jiangsu Key Laboratory of Atmospheric environment Monitoring and Pollution Control Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologyNanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China State environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex Shanghai Academy of Environmental SciencesShanghai 200233China TOFWERK China Nanjing 211800China State Key Joint Laboratory of environmental Simulation and Pollution Control College of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China State Key Laboratory of Loess and Quaternary Geology Center for Excellence in Quaternary Science and Global ChangeKey Laboratory of Aerosol Chemistry&PhysicsInstitute of Earth and EnvironmentChinese Academy of SciencesXi’an 710061China

气态二甲胺(DMA)是大气新粒子生成的关键前体物,然而对其来源与空气和气候效应仍存在巨大争议.本研究率先对中国大气DMA浓度开展了南北跨区域与城市内部的走航观测.发现亚热带森林植物的DMA排放浓度可能南方远高于北方,同时记录到由工... 详细信息

气态二甲胺(DMA)是大气新粒子生成的关键前体物,然而对其来源与空气和气候效应仍存在巨大争议.本研究率先对中国大气DMA浓度开展了南北跨区域与城市内部的走航观测.发现亚热带森林植物的DMA排放浓度可能南方远高于北方,同时记录到由工业脉冲排放所导致的全球最高大气DMA浓度.在高度城市化的上海地区,DMA浓度自市中心向外围逐渐降低且与人口密度关联.源排放的直接测试进一步表明中国区域和城市内部的大气二甲胺都深受非农业源排放的影响.大气化学传输模式也证实,居民DMA排放主导了上海城市大气颗粒物数浓度的贡献.该研究将外场观测、源排放测试与模型模拟相结合,呈现了中国大气二甲胺的全生命周期,为颗粒物污染防治和气候变化评估提供了有用参考.

关键词： Newparticleformation Amines Volatile organic compounds Urbanatmosphere Non-agricultural sources

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Synergistic Effects of 2,3,7,8-Tetrachlorodibenzo-p-dioxin and N-nitrosodiethylamine on Cell Malignant Transformation

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Biomedical and environmental sciences 2013年第5期26卷 323-330页

作者： ZHANG Lei ZHAO Rui YE Shu Qing ZHOU Ling WU Yong Ning ZENG Yi Key Laboratory of food Safety Risk Assessment Ministry of HealthChina National Center for Food Safety Risk Assessment college of life Science and Bio-engineering Beijing University of Technology National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention

Objective The present paper aims to investigate the effect of 2,3,7,8-tetrachlorodibenzo-p-dioxin （TCDD） and N-nitrosodiethylamine （DEN） on tumorigenesis and its potential mechanism. Methods The potentials of TCDD and DEN in separation or in combination to induce malignant transformation were tested in Balb/c 3T3 cells by using a cell transformation assay method. The possible mechanism of observed effects was studied further by adding α-naphthoflavone （α-NF）, a competitive binding agent of TCDD, to the Aryl hydrocarbon receptor （AhR） pathway. The mRNA expressions of Cyp1a1 and Cyp2a5 gene in Balb/c 3T3 cells treated by DEN and TCDD in separation or in combination with or without presence of α-NF were measured with fluorescence quantification RT-PCR technique. Results The cell transformation frequency （TF） was significantly higher in case of induction with TCDD in combination with DEN, as compared to that with either TCDD or DEN alone. These effects were not inhibited via α-NF. The mRNA expression levels of both Cyp1a1 and Cyp2a5 were enhanced by TCDD treatment alone, but this inducible effect was blocked in cells treated by TCDD and DEN in combination. Conclusion TCDD and DEN had a significant synergistic effect on tumorigenesis when they were used in combination. AhR pathway may not be the key mechanism of this synergistic effect. Thus, it is necessary to further test the potential mechanism involved in cancer development.

关键词： Dioxin Nitrosodiethylamine Cell transformation Tumorigenesis

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Rainfall amount determines annual herb controls over soil seed bank and its similarity with vegetation in the Tengger Desert

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Ecological Processes 2022年第1期11卷 27-37页

作者： Ya‑Fei Shi Zeng‑Ru Wang Bing‑Xin Xu Jian‑Qiang Huo Rui Hu Yang Zhao Zhi‑Shan Zhang Shapotou Desert research and Experiment Station Northwest Institute of Eco‑Environment and ResourcesChinese Academy of SciencesLan‑zhou 730000Gansu ProvincePeople’s Republic of China University of Chinese Academy of sciences Beijing 100049People’s Republic of China State Key Laboratory of Grassland Agro‑Ecosystems Key Laboratory of Grass‑land Livestock Industry InnovationMinistry of Agriculture and Rural AffairsEngineering Research Center of Grassland IndustryMinistry of EducationCollege of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730020Gansu ProvincePeople’s Republic of China

Background:Soil seed banks may offer great potential for maintaining and restoring desert ecosystems that have been degraded by climate change and anthropogenic ***,few studies have explored the year‑to‑year dynamics in the species composition(richness and abundance)of these desert soil seed ***,we conducted a 4‑year study to assess the effects of environmental factors(meteorology and microtopography)and aboveground vegetation on the soil seed bank of the Tengger Desert,***:We found the seed bank was dominated by annual herb species both in species richness and *** rainfall in the growing season increased the number of seeds in the soil seed bank,and quadrat micro‑elevation had a negative effect on soil seed bank *** species composition in the seed bank had significantly larger between‑year similarity than that in the aboveground vegetation due to the dominance of annual herb *** different life forms,the species composition of annual herbs showed distinctly larger temporal similarity between the aboveground vegetation and the seed bank compared with perennial herbs and ***:Our findings highlight that the combined effects of environmental factors and plant life forms deter‑mine the species composition(especially the abundance)of soil seed banks in ***,if degraded desert ecosystems are left to regenerate naturally,the lack of shrub and perennial herb seeds could crucially limit their *** intervention and management may have to be applied to enhance the seed abundance of perennial lifeforms in degraded deserts.

关键词： Desert ecosystem Seed bank dynamics Rainfall Plant type Vegetation regeneration Annual herbs

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Rapid evaluation of arsenic contamination in paddy soils using field portable X-ray fluorescence spectrometry

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Journal of environmental sciences 2018年第2期30卷 345-351页

作者： Jian-Hong Liang Pan-Pan Liu Zheng Chen Guo-Xin Sun Hong Li Key Laboratory of Karst Ecosystem and Treatment of Rocky Desertification Institute of Karst Geology Chinese Academy of Geological Sciences Guilin 541004 China State Key Joint Laboratory of environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Department of environmental Science Xi' an Jiaotong-Liverpool University Suzhou 215123 China college of Urban Construction and environmental engineering Chongqing University Chongqing 400045 China

Arsenic（As） in paddy fields is deteriorating food security and human health through rice ingestion. Rice is the dominant food source of arsenic exposure to half of the world’s population. Therefore, an in situ effective method for As risk evaluation in paddy soil is strongly needed to avoid As exposure through rice ingestion. Herein, we developed a rapid analytical methodology for determination of As in plant tissues using field portable X-ray fluorescence spectrometry（FP-XRF）. This method was applied to rice roots in order to evaluate the As contamination in paddy soils. The results showed that rice roots with iron plaques were superior to rhizosphere soils for generating FP-XRF signals, especially for field sites with As concentrations lower than the soil detection limit of FP-XRF（30.0 mg/kg）.Moreover, the strong linear relationships of As concentrations between the rice roots and corresponding leaves and grains proved that the rice root, rather than the soil, is a better predictor of As concentrations in rice grains. The research provides an efficient As monitoring method for As contaminated paddy fields by using wetland plant roots with iron plaques and XRF-based analytical techniques.

关键词： XRF Arsenic Risk evaluation Rice roots Rhizosphere soils Iron plaque

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Promoting oral mucosal wound healing using a DCS-RuB_(2)A_(2) hydrogel based on a photoreactive antibacterial and sustained release of BMSCs

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Bioactive Materials 2023年第5期23卷 53-68页

作者： Wenxin Qi Naijun Dong Lingling Wu Xueqi Zhang He Li Hao Wu Natalie Ward Jian Yu He Liu Jiao Wang Xiaoyong Deng Robert Chunhua Zhao School of life sciences Shanghai UniversityShanghaiChina School of Medicine Shanghai UniversityShanghaiChina beijing University of Chemical Technology BeijingChina Banner Ocotillo Medical center 1405 S Alma School RdChandlerAZ85286USA Division of Endodontics Department of Oral Biological and Medical SciencesFaculty of DentistryUniversity of British ColumbiaVancouverV6T 1Z3Canada The State Key Laboratory Breeding Base of Basic Science of Stomatology(Hubei-MOST)&Key Laboratory for Oral Biomedicine Ministry of Education School and Hospital of StomatologyWuhan UniversityWuhan430079China School of environmental and Chemical engineering Shanghai UniversityShanghaiPR China Institute of Basic Medical sciences Chinese Academy of Medical sciences School of Basic Medicine Peking Union Medical CollegeBeijingChina Centre of Excellence in Tissue engineering Chinese Academy of Medical SciencesBeijingChina beijing Key Laboratory of New Drug Development and Clinical Trial of Stem Cell Therapy(BZ0381) BeijingChina

The high occurrence rate and difficulties in symptom control are listed as the major problems of oral mucosal disease by medical *** the development of oral mucosal lesions,the oral microenvironment changes,immunity declines,and continuous bacterial stimulation causes wound *** antibacterial drugs are ineffective for oral mucosal *** overcome this problem,a light-responsive antibacterial hydrogel containing sustained-release BMSCs was inspired by the trauma environment in the oral cavity,which is different from that on the body surface since it mostly remains under dark *** the absence of light,the hydrogel seals the wound to form a barrier,exerts a natural bacteriostatic effect,and prevents invasion by foreign ***,mesenchymal stem cells are presented,and the released growth factors and other substances have excellent anti-inflammatory and angiogenic effects,which result in rapid repair of the damaged *** light conditions,after photo-induced shedding of the hydrogel,RuB_(2)A exerts an antibacterial effect accompanied by degradation of the *** in a rat oral mucosal repair model demonstrate that DCS-RuB_(2)A_(2)-BMSCs could rapidly repair the oral mucosa within 4 *** data provide ideas for further analysis of the intrinsic molecular mechanisms and signaling *** together,our results suggest that this light-responsive antibacterial hydrogel loaded with BMSCs can be used for rapid wound repair and may advance the development of therapeutic strategies for the treatment of clinical oral mucosal defects.

关键词： Oral mucosa Light-responsive Hydrogel DCS BMSCs

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The role of maize root size in phosphorus uptake and productivity of maize/faba bean and maize/wheat intercropping systems

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Science China(life sciences) 2012年第11期55卷 993-1001页

作者： ZHANG YiKai CHEN FanJun LI Long CHEN YanHua LIU BingRan ZHOU YuLing YUAN LiXing ZHANG FuSuo MI GuoHua Key Laboratory of Plant-Soil Interactions Ministry of EducationCenter for ResourcesEnvironment and Food SecurityCollege of Resources and Environmental ScienceChina Agricultural UniversityBeijing 100193China

Interspecific root/rhizosphere interactions affect phosphorus (P) uptake and the productivity of maize/faba bean and maize/wheat intercropping systems. The aim of these experiments was to determine whether manipulation of maize root growth could improve the productivity of the two intercropping systems. Two near isogenic maize hybrids (the larger-rooted T149 and smaller-rooted T222) were intercropped with faba bean and wheat, under conditions of high- and low-P availability. The larger-rooted T149 showed greater competitive ability than the smaller-rooted T222 in both maize/faba bean and maize/wheat intercropping systems. The higher competitive ability of T149 improved the productivity of the maize/faba bean intercropping system in P-sufficient conditions. In maize/wheat intercropping systems, root growth, shoot biomass, and P uptake of maize were inhibited by wheat, regardless of the P-supply. Compared with T222, the larger-rooted T149 suffered less in the intercropping systems. The total biomass of the maize/wheat intercropping system was higher for wheat/T149 than for wheat/T222 under low-P conditions. These data suggested that genetic improvement of maize root size could enhance maize growth and its ability to compete for P resources in maize/faba bean and maize/wheat intercropping systems. In addition, depending on the P availability, larger maize roots could increase the productivity of intercropping systems.

关键词：玉米根系间作系统生产力小麦蚕豆吸收地上部生物量磷

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A NEW APPROACH TO HOLISTIC NITROGEN MANAGEMENT IN CHINA

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Frontiers of Agricultural Science and engineering 2022年第3期9卷 490-510页

作者： Xuejun LIU Zhenling CUI Tianxiang HAO Lixing YUAN Ying ZHANG Baojing GU Wen XU Hao YING Weifeng ZHANG Tingyu LI Xiaoyuan YAN Keith GOULDING David KANTER Robert HOWARTH Carly STEVENS Jagdish LADHA Qianqian LI Lei LIU Wim DE VRIES Fusuo ZHANG Key Laboratory of Plant-Soil Interactions of Ministry of Education National Academy of Agriculture Green DevelopmentCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100193China Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China college of environmental&Resource sciences Zhejiang UniversityHangzhou 310058China college of Tropical Crops Hainan UniversityHaikou 570228China State Key Laboratory of Soil and Sustainable Agriculture Nanjing Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Department of Sustainable Agriculture sciences Rothamsted ResearchHarpenden AL52JQUK Department of environmental Studies New York UniversityNew YorkNY 10003USA Department of Ecology&Evolutionary Biology Cornell UniversityIthacaNY 14853USA Lancaster environment Centre Lancaster UniversityLancasterLA14YQUK Department of Plant sciences University of CaliforniaDavisDavisCA 95616USA School of life sciences Jiangsu Normal UniversityXuzhou 221116China college of Earth and environmental sciences Lanzhou UniversityLanzhou 730000China environmental Systems Analysis Group Wageningen University&ResearchPO Box 476700 AA Wageningenthe Netherlands.

Since the 1980s,the widespread use of N fertilizer has not only resulted in a strong increase in agricultural productivity but also caused a number of environmental problems,induced by excess reactive N emissions.A range of approaches to improve N management for increased agricultural production together with reduced environmental impacts has been *** 4R principles(right product,right amount,right time and right place)for N fertilizer application have been essential for improving crop productivity and N use efficiency while reducing N *** example,site-specific N management(as part of 4R practice)reduced N fertilizer use by 32%and increased yield by 5%in ***,it has not been enough to overcome the challenge of producing more food with reduced impact on the environment and *** paper proposes a new framework of food-chainnitrogen-management(FCNM).This involves good N management including the recycling of organic manures,optimized crop and animal production and improved human diets,with the aim of maximizing resource use efficiency and minimizing environmental *** could meet future challenges for food demand,resource sustainability and environmental safety,key issues for green agricultural transformation in China and other countries.

关键词： 4R technology food chain N management N use efficiency soil-crop system sustainable management

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Disaster prevention and reduction in Anthropocene

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Frontiers of environmental Science & engineering 2016年第5期10卷 5-7页

作者： Sha Chen Bo Tao Wei Ren National Disaster Reduction center of China Ministry of Civil Affairs Beijing 100124China Department of Plant and Soil sciences College of Agriculture Food and Environment University of Kentucky Lexington KY 40506 USA

Natural disasters cause considerable property damage and loss of life as well as destruction of ecosystem and natural resources. In the context of global change, extreme events are expected to increase in both frequency and intensity. To prevent natural disasters and mitigate the loss, we need to act quickly and effectively. It would be conducive to achieve sustainable economic development, reduce disaster vulnerabilities and risks, and build resilience through implementing effective measures of disaster prevention, preparedness, response, and recovery.

关键词： natural disasters global change Sendai Fra-mework

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Spatiotemporal variations of nitrate sources and dynamics in a typical agricultural riverine system under monsoon climate

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Journal of environmental sciences 2020年第7期32卷 98-108页

作者： Hao Jiang Wenjing Liu Jiangyi Zhang Li Zhou Xiaode Zhou Ke Pan Tong Zhao Yuchen Wang Zhifang Xu Institute for Advanced Study Shenzhen UniversityShenzhen518060China college of Physics and Optoelectronic engineering Shenzhen UniversityShenzhen 518060China Key Laboratory of Cenozoic Geology and environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China CAS center for Excellence in life and Paleoenvironment Beijing 100044China University of Chinese Academy of sciences Beijing 100049China State Key Laboratory of Biogeology and environmental Geology China University of GeosciencesWuhan 430074China

Nitrogen pollution is a serious environmental issue in the Danjiangkou Reservoir region(DRR),the water source of the South-to-North Water Diversion Project of *** this research,seasonal surveys and a bi-weekly time series survey were conducted in the Qihe River Basin,one of the most densely populated agricultural basins in the *** compositions(NO3^-Cl^-),dual isotopes(δD-H2O,δ^18O-H2O,δ^15N-NO3^-,andδ^18O-NO3^-),and a Markov Chain Monte Carlo isotope mixing model were jointly applied to unravel the sources,migrations,and transformations of the nitrate(NO3^-)in the *** was revealed that the mixing between different sources was the main process controlling the isotopic compositions of the riverine NO3the upper-middle *** contrast,denitrification occurred in the lower *** the first time,the sources of NO3^-quantified at a basin scale in the ***,the river transported 484.2 tons/year of NO3^-N to the reservoir,of which 32.6%,36.4%,28.0%,and 3.0%was from soil organic nitrogen,chemical fertilizer,residential sewage and atmospheric precipitation,*** NO3^-N fluxes of the different sources were regulated by the monsoon climate and anthropogenic *** example,high precipitation and intense fertilization resulted in severe nonpoint source *** thrived in soils and reservoirs in wet *** could regulate the migration,nitrification and denitrification *** on the results,we suggest that the management strategies dealing with nitrogen pollution issue in the DRR should follow the specific spatiotemporal characteristics of NO3migration and transformation mechanisms.

关键词： Nitrate Source Dynamics Isotope MCMC mixing model

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Phosphorus recovery:a need for an integrated approach

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Ecosystem health and Sustainability 2018年第2期4卷 22-32页

作者： Suriyanarayanan Sarvajayakesavalu Yonglong Lu Paul.J.A.Withers Paulo Sergio Pavinato Gang Pan Pisit Chareonsudjai State Key Lab ofUrban and Regional Ecology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijingChina SCOPE(Scientific Committee on Problems of the environment) BeijingChina Department of Water and health Faculty of Life SciencesJSS Academy of Higher Education and Research(Deemed to be University)MysuruIndia School of environment Natural Resources and GeographyBangor UniversityBangorUK "Luiz de Queiroz"college of Agriculture Department of Soil SdienceUniversity of Sao PauloPiracicabaBrazi School of Animal Ruraland Environmental SciencesNottingham Trent UniversityNottinghamUK Department of environmental Science Faculty of ScienceKhonKaen UniversityKhonKaenThailand

Introduction:Phosphorus(P)is an essential element in food production.P consumption is increasing over the years due to increasing population and increasing demand for agricultural *** the agricultural P through the understanding of bioav ailability,transport,and runoff will maximize the soil productivity and minimize the environmental *** management in agriculture,governance,and lack of integrated international govern-ance need to be addressed to overcome the P scarcity *** and Discussions:This article is focusing one such efficient management of P resource addressing the major portion of phosphorus which is unnoticed in agricultural residues,manures,and other *** cost of phosphate fertilizer,a scarcity of high-quality phosphate rock(PR),and increasing surface water pollution are driving a need to accelerate the recovery and reuse of phosphorus(P)from various waste *** to recover P occur all along the open P cycle from mining to households to ***,P recovery as a regional and global strategy toward P sustainability and future food,bio energy,and water security are in its infancy because of a number of technological,socioeconomic,and institutional *** these constraints requires concerted colla boration between relevant stakeholders and an integrated approach combining successful business models with socioeconomic and institutional changes.

关键词： Phosphorus recovery and reuse phosphatic fertilizers depletion eutrophication

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