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Cellular distribution of Pb and As in leaves of metal-scavenging plant Viola principis H. de Boiss

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Acta Geochimica 2006年第S1期 250-251页

作者： zechun huang, tongbin chen, mei lei,{3., yuying huang center for Environmental remediation, institute of geographic sciences and natural resources research, chinese academy of sciences, beijing 100101, china

Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation

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Journal of Environmental sciences 2008年第1期20卷 62-67页

作者： XIAO Xiyuan chen tongbin AN Zhizhuang {3. mei huang zechun liao xiaoyong LIU Yingru center for Environmental remediation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China.

Field investigation and greenhouse experiments were conducted to study the tolerance of Pteris vittata L. （chinese brake） to cadmium （Cd） and its feasibility for remediating sites co-contaminated with Cd and arsenic （As）. The results showed that P. vittata could survive in pot soils spiked with 80 mg/kg of Cd and tolerated as great as 3.1 mg/kg of total Cd and 26.8 mg/kg of diethyltriaminepenta acetic acid （DTPA）-extractable Cd under field conditions. The highest concentration of Cd in fronds was 186 mg/kg under a total soil concentration of 920 mg As/kg and 98.6 mg Cd/kg in the field, whereas just 2.6 mg/kg under greenhouse conditions. Ecotypes of P. vittata were differentiated in tolerance and accumulation of Cd, and some of them could not only tolerate high concentrations of soil Cd, but also accumulated high concentrations of Cd in their fronds. Arsenic uptake and transportation by P. vittata was not inhibited at lower levels （〈20 mg/kg） of Cd addition. Compared to the treatment without addition of Cd, the frond As concentration was increased by 103.8% at 20 mg Cd/kg, with the highest level of 643. mg/kg. The results suggested that the Cd-tolerant ecotype of P. vittata extracted effectively As and Cd from the site co-contaminated with Cd and As, and might be used to remediate and revegetate this type of site.

关键词： arsenic (As) cadmium (Cd) chinese brake (Pteris vittata L.) hyperaccumulator phytoremediation tolerance uptake

Subcellular distribution and compartmentalization of arsenic in Pteris vittata L.

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chinese Science Bulletin 2005年第24期50卷 2843-2849页

作者： chen tongbin YAN Xiulan liao {3. XIAO Xiyuan huang zechun XIE Hua ZHAI Limei center for Environmental remediation Institute of Geographic Sciencesand Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

The subcellular distribution of arsenic (As) in Pteris vittata L., an As-hyperaccumulator, was studied to de- termine As compartmentalization and to explore the mecha- nisms that confer As tolerance. When the plant was grown in a nutrient solution without additional As, most of the accu- mulated As was isolated to the cell wall. However, in plants growing in a nutrient solution containing 0.1 or 0.2 mmol/L As, approximately 78% of the total As accumulated within the pinna. The proportions of As accumulation in the cyto- plasmic supernatant fraction were 78% of that in the pinna and 61% of that in the plant. In either treatment group (0.1 or 0.2 mmol/L As), the fraction containing the lowest level of As was the organelle fraction. These results suggest that As accumulates in the pinna where it is primarily distributed in the cytoplasmic supernatant fraction. The role of As com- partmentalization may be intricately linked with As detoxi- fication in P. vittata L.

关键词：砷超量聚积植物环境污染亚细胞分布凤尾蕨属

Cellular distribution of Pb and As in leaves of metal-scavenging plant Viola principis H. de Boiss

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chinese Journal Of Geochemistry 2006年第B08期25卷 250-251页

作者： zechun huang Yongbin chen mei lei{3. yuying huang center for Environmental remediation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101China

Identifying factors that influence soil heavy metals by using categorical regression analysis:A case study in beijing,china

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Frontiers of Environmental Science & Engineering 2020年第3期14卷 1-14页

作者： Jun Yang Jingyun Wang Pengwei Qiao Yuanming Zheng Junxing Yang tongbin chen mei {3. Xiaoming Wan xiaoyong Zhou center for Environmental remediation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of chinese academy of sciences Beijing 100049China research center for Eco-Environmental sciences Chinese Academy of SciencesBeijing 100085China beijing Key Laboratory of remediation of Industrial Pollution Sites Environmental Protection Research Institute of Light IndustryBeijing 100048China

Identifying the factors that influence the heavy metal contents of soil could reveal the sources of soil heavy metal *** this study,a categorical regression was used to identify the factors that influence soil heavy ***,environmental factors were associated with soil heavy metal data,and then,the degree of influence of different factors on the soil heavy metal contents in beijing was analyzed using a categorical *** results showed that the soil parent material,soil type,land use type,and industrial activity were the main influencing factors,which suggested that these four factors were important sources of soil heavy metals in *** addition,population density had a certain influence on the soil Pb and Zn *** distribution of soil As,Cd,Pb,and Zn was markedly influenced by interactions,such as traffic activity and land use type,industrial activity and population *** spatial distribution of soil heavy metal hotspots corresponded well with the influencing factors,such as industrial activity,population density,and soil parent *** this study,the main factors affecting soil heavy metals were identified,and the degree of their influence was ranked.A categorical regression represents a suitable method for identifying the factors that influence soil heavy metal contents and could be used to study the genetic process of regional soil heavy metal pollution.

关键词： Soil Heavy metal Influencing factor Categorical regression Identification method

Regional assessment of cadmium pollution in agricultural lands and the potential health risk related to intensive mining activities: A case study in chenzhou City, china

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Journal of Environmental sciences 2008年第6期20卷 696-703页

作者： ZHAI Limei liao xiaoyong {3. tongbin YAN Xiulan XIE Hua WU Bin WANG Lixia center for Environmental remediation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences 11A Datun Road Beijing 100101 China Graduate University of chinese academy of sciences Beijing 100049 China

The purpose of this study was to assess the extent of cadmium （Cd） contamination in agricultural soil and its potential risk for people. Soils, rice, and vegetables from chenzhou City, Southern china were sampled and analyzed. In the surface soils, the 95% confidence interval for the mean concentration of Cd varied between 2.72 and 4.83.mg/kg （P 〈 0.05） in the survey, with a geometric mean concentration of 1.45 mg/kg. Based on the GIS map, two hot spot areas of Cd in agricultural soils with high Cd concentrations were identified to be located around the Shizhuyuan, Jinshiling, and Yaogangxian mines, and the Baoshan and huangshaping mines, in the {3. of the city. About 60% of the total investigated area, where the agricultural soil Cd concentration is above 1 mg/kg, is distributed in a central belt across the region. The critical distances, at which the soil Cd concentration were increased by the mining activities, from the mines of the soils were 23.km for the Baoshan mine, 46 km for the huangshaping mine, and 63.km for the Shizhuyuan mine, respectively. These are distances calculated from models. The Cd concentrations in rice samples ranged from 0.01 to 4.43.mg/kg and the mean dietary Cd intake from rice for an adult was 191 μg/d. Results of risk indexes showed that soil Cd concentrations possessed risks to local residents whose intake of Cd from rice and vegetables grown in soils in the vicinity of the mine was 596 μg/d.

关键词： cadmium health risk mining activities rice soil contamination vegetable

Heavy metal pollution of soils and vegetables in the midstream and downstream of the Xiangjiang River, Hunan Province

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Journal of geographical sciences 2008年第3期18卷 353-362页

作者： WANG Lixia GUO Zhaohui XIAO Xiyuan chen tongbin liao {3. SONG Jie WU Bin center for Environmental remediation Institute of Geographic Sciences and Natural Resources Research CAS Beijing 100101 China institute of Environmental Engineering School of Metallurgical Science and Engineering Central South University Changsha 410083 China Graduate University of chinese academy of sciences Beijing 100049 China

A total of 219 agricultural soil and 48 vegetable samples were collected from the midstream and downstream of the Xiangjiang River（the Hengyang-Changsha section）in Hunan *** accumulation characteristics,spatial distribution and potential risk of heavy metals in the agricultural soils and vegetables were *** are higher accumulations of heavy metals such as As,Cd,Cu,Ni,Pb and Zn in agricultural soils,and the contents of Cd（2.44 mg kg^-1 ）,Pb（65.00 mg kg^-1 ）and Zn（144.13.mg kg^-1 ）are 7.97,3.69 and 1.63.times the corresponding background contents in soils of Hunan Province,respectively. 13.2%of As,68.5%of Cd,2.7%of Cu,2.7%of Ni,8.7%of Pb and 15.1%of Zn in soil samples from the investigated sites exceeded the maximum allowable heavy metal contents in the china Environmental Quality Standard for Soils（GB15618-1995,Grade Ⅱ）.The pollution characteristics of multi-metals in soils are mainly due to *** contents of As,Cd,Cu,Pb and Zn in vegetable soils are significantly higher than the contents in paddy soils.95.8%, 68.8%,10.4%and 95.8%of vegetable samples exceeded the Maximum Levels of Contaminants in Foods（GB2762-2005）for As,Cd,Ni and Pb concentrations,*** are significantly positive correlations between the concentrations of Cd,Pb and Zn in vegetables and the concentrations in the corresponding vegetable soils（p〈0.01）.It is very necessary to focus on the potential risk of heavy metals for food safety and human health in agricultural soils and vegetables in the midstream and downstream of the Xiangjiang River,Hunan Province of china.

关键词： Xiangjiang River agricultural soil vegetable heavy metal pollution

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玉米秸秆黄原酸盐对铅离子的动态吸附特征

环境科学学报 2019年第8期39卷 2586-2592页

作者：李武楠廖晓勇黄占斌中国矿业大学(北京)化学与环境工程学院北京100083 中国科学院地理科学与资源研究所环境损害与污染修复北京市重点实验室中国科学院陆地表层格局与模拟重点实验室北京100101

玉米秸秆黄原酸盐是一种新型的重金属吸附材料.为了揭示玉米秸秆黄原酸盐对溶液中铅离子的动态吸附特征,本文通过柱体穿透吸附模拟实验方法,研究了玉米秸秆黄原酸对流体中铅离子的吸附穿透曲线、吸附效率及水体流速、初始浓度、填柱高... 详细信息

玉米秸秆黄原酸盐是一种新型的重金属吸附材料.为了揭示玉米秸秆黄原酸盐对溶液中铅离子的动态吸附特征,本文通过柱体穿透吸附模拟实验方法,研究了玉米秸秆黄原酸对流体中铅离子的吸附穿透曲线、吸附效率及水体流速、初始浓度、填柱高度等因素对其吸附特性的影响,并采用The Thomas、The Bohart-Adams、The Wolborskal和The Yoon-Nelson等模型进行动力学拟合.结果表明,流速、初始浓度、填柱高度等因素对玉米秸秆黄原酸盐吸附铅离子的穿透曲线都有明显影响,Thomas模型和Yoon-Nelson模型能较好反映吸附过程特征.实验表明,玉米秸秆黄原酸盐对铅离子的吸附量为175mg·g^-1,吸附后的玉米秸秆黄原酸盐残渣体性能稳定.

关键词：玉米秸秆黄原酸盐动态吸附柱吸附试验吸附循环铅

Spatial and seasonal characterization of net primary productivity and climate variables in southeastern china using MODIS data

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第4期11卷 275-285页

作者： Dai-liang PENG Jing-feng huang Alfredo R. HUETE Tai-ming YANG Ping GAO Yan-chun chen Hui chen Jun LI Zhan-yu LIU institute of Agricultural Remote Sensing and Information Application Zhejiang University Hangzhou 310029 China center for Earth Observation and Digital Earth Chinese Academy of Sciences Beijing 100190 China Ministry of Education Key Laboratory of Environmental remediation and Ecological Health Zhejiang University Hangzhou 310029 China Key Laboratory of Agricultural Remote Sensing and Information System of Zhejiang Province Hangzhou 310029 China Department of Soil Water and Environmental Science University of Arizona Tucson AZ 85 721 USA institute of Anhui Meteorology Hefei 230031 China institute of Jiangsu Meteorology Nanjing 210008 China institute of Shandong Meteorology Jinan 250031 China institute of Fujian Meteorology Fuzhou 350001 China Shanghai Climate Centre Shanghai 200030 China

We developed a sophisticated method to depict the spatial and seasonal characterization of net primary productivity (NPP) and climate variables. The role of climate variability in the seasonal variation of NPP exerts delayed and continuous effects. This study expands on this by mapping the seasonal characterization of NPP and climate variables from space using geographic information system (GIS) technology at the pixel level. Our approach was developed in southeastern china using moderate-resolution imaging spectroradiometer (MODIS) data. The results showed that air temperature,precipitation and sunshine percentage contributed significantly to seasonal variation of NPP. In the northern portion of the study area,a significant positive 3.-d lagged correlation was observed between seasonal variation of NPP and climate (P china,NPP showed 16-d,48-d,and 96-d lagged correlation with air temperature,precipitation,and sunshine percentage,respectively (P<0.01); the influences of air temperature and precipitation on NPP lasted for 48 d or 64 d,while sunshine influence on NPP only persisted for 16 d. Due to complex topography and vegetation distribution in the southern part of the study region,the spatial patterns of vegetation-climate relationship became complicated and diversiform,especially for precipitation influences on NPP. In the northern part of the study area,all vegetation NPP had an almost similar response to seasonal variation of air temperature except for broad crops. The impacts of seasonal variation of precipitation and sunshine on broad and cereal crop NPP were slightly different from other vegetation NPP.

关键词： Net primary productivity Climate variables Spatial characterization Lagged cross-correlation Moderate-resolution imaging spectroradiometer geographic information system technology