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Contaminations of Heavy Metals in Surface Soils of Various Lands and Their Health Risks in Tianjin Qilihai Ancient Lagoon wetlands,China

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湿地科学 2016年第5期14卷 700-709页

作者： XIANG Lixiong XIE Zhenglei DU Zebing JIANG Yinghui XIE Chao LONG Ting School of Geography & Environmental Jiangxi Normal University Nanchang 330022 Jiangxi P.R.China key laboratory of Education Ministry for poyang lake wetland & watershed research Nanchang 330022 Jiangxi P.R.China

A total of 36 surface soil profiles were set at the wetlands in Qilihai Ancient Lagoon wetlands,Tianjin,the surface soils of 0-20 cm depth were sampled at various use types of lands to provide information on the concentrations of heavy metals in the coastal *** concentrations of arsenic(As),cadmium(Cd),copper(Cu),lead(Pb),chromium(Cr)and zinc(Zn)were determined using inductively coupled plasma atomic absorption spectrometry(ICP-AES)to address the pollution levels in the sampling *** results showed that the concentrations of Cd,Cu in the soils disturbed by human activities intensively,the Phragmites australis marshes,the farmland,the brushes decreased in turn;among the sites,the concentrations of As,Cd and Cu were the highest in the soil of build-up areas,while the concentrations of Pb and Zn were the higher in the soil of *** mean concentrations of Cu,Cr,Cd,Pb,Zn and As in the soils of 0-20 cm depth were 38.74 mg/kg,83.52 mg/kg,0.19 mg/kg,34.27 mg/kg,121.7 mg/kg and 18.77 mg/kg,*** contamination indices of As were on the high pollution level in the soils of farmland and disturbed by human activities intensively;the concentrations of Cd in the soils of the marshes and farmland were at the moderate pollution level,while that in the soil disturbed by human activities intensively was at high pollution *** values of comprehensive contamination index demonstrated that the variation of As contents was the maximum in the soils,Cd pollution reached to a high *** index showed that As pollution was at moderate level,and Cd,Cu and Zn pollution were at slight level,and the Pb and Cr pollution wasn't found in the build-up areas.

关键词：中国研究问题政策天津

Remote Sensing and GIS Application in the Detection of Environmental Degradation Indicators

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Geo-Spatial Information Science 2011年第1期14卷 39-47页

作者： HadeelA S Mushtak T Jabbar CHEN Xiaoling State key laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University 129 Luoyu Road Wuhan 430079. China Department of Soil and Water College of Agriculture University of Basrah (Iraq) key laboratory of poyang lake wetland and watershed research Ministry of Education Jiangxi Normal UniversityNanchang 330022. China

The main aim of this research is to highlight the environment change indicators during the last 20 years in a representa-tive area of the southern part of Iraq(Basrah Province was taken as a case) to understand the main causes which led to widespread environment degradation phenomena using a 1:250000 mapping *** sensing and GIS's software were used to classify Landsat TM in 1990 and Landsat ETM+ in 2003 imagery into five land use and land cover(LULC) classes:vegetation land,sand land,urban area,unused land,and water *** classification and Normalized Difference Vegetation Index(NDVI),Normalized Difference Build-up Index(NDBI),Normalized Difference Water Index(NDWI),Normalized Difference Salinity In-dex(NDSI),and Topsoil Grain Size Index(GSI) were adopted in this research and used respectively to retrieve its class *** results showed a clear deterioration in vegetative cover(514.9 km2) and an increase of sand dune accumulations(438.6 km2),accounting for 10.1,and 10.6 percent,respectively,of the total study *** addition,a decrease in the water bodies' area was de-tected(228.9 km2).Sand area accumulations had increased in the total study area,with an annual increasing expansion rate of(33.7 km2·yr·1) during the thirteen years covered by the *** is therefore imperative that Iraqi government undertake a series of pru-dent actions now that will enable to be in the best possible position when the current environmental crisis ultimately passes.

关键词：环境降级 LULC RS GIS 分类索引

Disturbance impacts of land use change on biodiversity conservation priority areas across China： 1990-2010

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Journal of Geographical Sciences 2015年第5期25卷 515-529页

作者： ZHAO Guosong LIU Jiyuan KUANG Wenhui OUYANG Zhiyun XIE Zhenglei key laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Re sources Research CAS Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China research Center for Eco-Environmental Sciences CAS Beijing 100085 China key laboratory of Education Ministry for poyang lake wetland and watershed research School of Ge-ography and Environment Jiangxi Normal University Nanchang 330022 China

Land use change is one of the main drivers of biodiversity loss. In the last 20 years, China＇s land use pattern has undergone profound changes. This study constructs an Eco- system Comprehensive Anthropogenic Disturbance Index （ECADI） to assess disturbance impacts of land use change between 1990 and 2010 on biodiversity conservation priority areas at national and regional scales. Four levels of biodiversity conservation areas were categorized： generally important areas, moderately important areas, important areas, and very important areas. The results indicated a higher ECADI value in 2010 in Central and Eastern China than in Western China, and the values of the moderately important, important and very important regions were lower than the average value of the whole country at all levels. Notably, in recent 20 years, the change extent of ECADI values in Central and Eastern China were much greater compared with that in Western China, and ECADI values in the moderately important, important and very important biodiversity conservation areas all showed increasing trends, with the increasing extent lower than that of whole China at all levels. Due to human activities such as urbanization in Eastern China and cropland reclama- tion in Northeast China and Xinjiang, ECADI values showed a medium increase trend （the change rate was about 1%-5% in 10 years）, which indicated the need for more conservation efforts in those regions. However, ECADI values in the Loess Plateau presented a low decline trend （the change rate was about-1% to -0.1% in 10 years） after 2000 because of the ob- vious effectiveness of Green for Grain Project. Furthermore, the variation was negligible in the Tibetan Plateau.

关键词： land use/land cover change farmland reclamation urbanization biodiversity disturbance

Three-dimensional assessment of movement patterns of Sichuan snub-nosed monkeys affected by habitat structure in temperate forests

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Zoological research 2023年第2期44卷 361-365页

作者： Hai-Tao Yang Shun Li Rong Hou Wen-Tao Song Yan-Wen Fu Yong-Bo Li Xiao-Wei Wang Gang He Colin A.Chapman Qing-Hua Guo Bao-Guo Li Shaanxi key laboratory for Animal Conservation College of Life SciencesNorthwest UniversityXi’anShaanxi 710069China Institute of Remote Sensing and Geographic Information System School of Earth and Space SciencesPeking UniversityBeijing 100871China Ministry of Education key laboratory of poyang lake wetland and watershed research College of Geography and EnvironmentJiangxi Normal UniversityNanchangJiangxi 330022China College of Life Sciences Beijing Normal UniversityBeijing 100875China Shaanxi key laboratory for Animal Conservation Shaanxi Institute of ZoologyShaanxi Academy of SciencesXi’anShaanxi 710032China Biology Department Vancouver Island UniversityBritish ColumbiaV5K0A1 Canada School of Life Sciences University of KwaZulu-NatalPietermaritzburg 3200South Africa

DEAR EDITOR,Movement patterns can reflect species-specific characteristics of individuals and animal groups at a given scale. Accurate three-dimensional(3D) assessment can quantify the relationship between movement patterns of an animal and its unique habitat. Here, we evaluated the effects of habitat structure on movement patterns of the golden snub-nosed monkey(Rhinopithecus roxellana). We used airborne light detection and ranging(LiDAR) to map the 3D structure of the temperate forest in the Qinling Mountains(Shaanxi, China).

关键词： habitat movement temperate

Incomplete lineage sorting and introgression in the diversification of Chinese spot-billed ducks and mallards

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Current Zoology 2019年第5期65卷 589-597页

作者： Wenjuan WANG Yafang WANG Fumin Lei Yang LIU Haitao WANG Jiakuan Chen Jiangxi Province key laboratory of watershed Ecosystem Change and Biodiversity Center for Watershed EcologyInstitute of Life Science and School of Life ScienceNanchang UniversityNanchangChina lnstitute of Biodiversity Science Fudan UniversityShanghaiChina key laboratory of poyang lake Environment and Resource Utilization Ministry of EducationNanchang UniversityNanchangChina National Ecosystem research Station of Jiangxi poyang lake wetland NanchangChina key laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijingChina State key laboratory of Biocontrol Department of Ecology/School of Life SciencesSun Yat-sen UniversityGuangzhouChina Jilin Provincial Engineering laboratory of Avian Ecology and Conservation Genetics School of Life SciencesNortheast Normal UniversityChangchunChina

Incomplete lineage sorting and introgression are 2 major and nonexclusive causes of specieslevel *** between these 2 processes is notoriously difficult because they can generate similar genetic *** studies have suggested that 2 closely related duck species,the Chinese spot-billed duck Anas zonorhyncha and the mallard *** polyphyletically ***,we utilized a wide geographical sampling,multilocus data and a coalescent-based model to revisit this *** study confirms the finding that Chinese spot-billed ducks and Mallards are not *** was no apparent interspecific differentiation across loci except those at the mitochondrial DNA(mtDNA)control region and the Z chromosome(CHD1Z).Based on an isolation-with-migration model and the geographical distribution of lineages,we suggest that both introgression and incomplete lineage sorting might contribute to the observed non-monophyly of the 2 closely related duck *** mtDNA introgression was asymmetric,with high gene flow from Chinese spot-billed ducks to Mallards and negligible gene flow in the opposite *** that the 2 duck species are phenotypically distinctive but weakly genetically differentiated,future work based on genomescale data is necessary to uncover genomic regions that are involved in divergence,and this work may provide further insights into the evolutionary histories of the 2 species and other waterfowls.

关键词： asymmetric introgression incomplete lineage sorting non-monophyly the Mallard complex Z chromosome

Major Elements in Soils Along a 2.8-km Altitudinal Gradient on the Tibetan Plateau,China

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Pedosphere 2016年第6期26卷 895-903页

作者： WANG Zhaofeng Alfred E.HARTEMINK ZHANG Yili ZHANG Hua DING Mingjun key laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences University of Wisconsin-Madison Department of Soil ScienceFD Hole Soils Lab key laboratory of poyang lake and watershed Resarch Ministry of EducationJiangxi Normal University

There are a series of special mountain soils on the Tibetan Plateau of China in an alpine environment for the high ***,very few studies have focused on major soil elements in relation to soil formation in this ***(Al),iron(Fe),calcium(Ca),sodium(Na),potassium(K) and magnesium(Mg) contents of 237 topsoil samples covering a 2.8-km altitudinal gradient in uncultivated areas along the Qinghai-Tibet Railway of China were measured using inductively coupled plasma atomic emission *** spatial distribution of the elements and its relationship to the parent rocks and climatic parameters were *** along the gradient are derived from a range of parent materials,but most are less than 30 cm deep with little development(Cambisols).Soil Al,Fe and Mg contents showed a decreasing trend from the start station(Xining Station) to end station(Lhasa Station) of the Qinghai-Tibet Railway,whereas soil K and Na contents were relative stable from Xining Station to the Kunlun Mountains and then increased *** Ca content was lower in the southern part of the Tanggula *** major soil element contents clearly re?ected the parent rock and climatic in?*** with higher Ca content appeared in areas with Ca-Mg carbonate rocks,soils with higher Al were found in areas with silicate-rich and high-Al silicate clastic rocks and silicate-rich aluminosilicate loose *** with higher K and Na contents appeared in areas with high-K,high-Na and silicate-rich aluminosilicate *** Na and K contents were affected by temperature,whereas the contents of Mg,Fe,Ca and Al were more affected by *** Na and K contents increased with increasing temperatures,whereas the contents of Mg,Fe,Ca and Al decreased with increasing *** analysis provides a relationship between soil properties and rapidly changing environmental *** data can be used to investigate the effect of the climate or land use chang

关键词：土壤元素含量山地土壤西藏高原海拔梯度电感耦合等离子体原子发射光谱法中国铝硅酸盐岩铁路沿线

Testing mechanisms underlying elevational patterns of lakeshore plant community assembly in poyang lake, China

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Journal of Plant Ecology 2019年第3期12卷 438-447页

作者： Zhichun Lan Yasong Chen Lei Li Feng Li Binsong Jin Jiakuan Chen Jiangxi Province key laboratory of watershed Ecosystem Change and Biodiversity Center for Watershed EcologyInstitute of Life ScienceSchool of Life SciencesNanchang UniversityNanchang 330031China Coastal Ecosystems research Station of the Yangtze River Estuary Ministry of Education Key Laboratory for Biodiversity Science and Ecological EngineeringSchool of Life SciencesFudan UniversityShanghai 200438China key laboratory of watershed Ecology and Geographical Environment Monitoring NASGNanchang 330029China key laboratory of poyang lake Environment and Resource Utilization Ministry of EducationNanchang UniversityNanchang 330031China National Ecosystem research Station of Jiangxi poyang lake wetland Nanchang 330038China key laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China

Aims Plant community assembly in wetlands usually changes with eleva-tion gradients,which may be due to the direct effect of flooding and indirect effects such as changes in soil properties and ***,the respective importance of each factor remains to be *** We investigated patterns of plant diversity,community biomass and soil properties along an elevation gradient of a lakeshore meadow at poyang lake,*** Findings(i)With increasing elevation,species richness and Simpson diver-sity index *** aboveground biomass(AGB)and below-ground biomass(BGB)increased with elevation,however,the BGB/AGB ratio also increased,which suggests a significant effect of belowground competition.(ii)Soil N content and soil N:P ratio increased,whereas soil pH decreased with *** soil properties showed no significant response.(iii)Structural equa-tion modeling showed that variation of plant diversity was mainly explained by ***,intensified belowground competition seems to be the primary mechanism causing lower plant diversity at higher elevations.(iv)These findings were further supported by the observed greater response ratio of N and P storage in plant commu-nities than the response ratio of soil N and P content to elevation,suggesting that soil nutrient limitation and belowground nutrient competition increased with *** study has important implications to wetland management and biodiversity conserva-tion under environmental change(*** in flooding regimes,eutrophication).

关键词： belowground competition aboveground competition flooding tolerance nutrient limitation biomass allocation

Flexible nest site selection of the endangered Oriental Storks(Ciconia boyciana):Trade-off from adaptive strategies

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Avian research 2023年第2期14卷 242-249页

作者： Lei Cheng Lizhi Zhou Chao Yu Zhenhua Wei Chunhua Li School of Resources and Environmental Engineering Anhui UniversityHefei230601China School of Biological Engineering Huainan Normal UniversityHuainan232038China Anhui Province key laboratory of wetland Ecosystem Protection and Restoration(Anhui University) Hefei230601China Anhui Shengjin lake wetland Ecology National Long-term Scientific research Base Dongzhi247230China College of Life and Environment Science Huangshan UniversityHuangshan245021China

Nest site selection is a vital component of bird reproduction success,and an adaptive behavior conducted to decrease nest predation risk with avoiding external *** patterns of nest site selection can provide insights into how species adapt to changes in their habitat and has important conservation *** this study,we used microhabitat variables and multi-scale data with a field survey of nest occurrence to determine nest site selection patterns and adaptive strategies of the breeding Oriental Storks(Ciconia boyciana)in different nest *** demonstrate that the nest site microhabitat characteristics of the breeding Oriental Storks significantly differed among the three nesting areas,and nest height was higher in the middle and lower Yangtze River floodplain than in the Northeast China and Bohai Bay nest *** food resources and intensity of human disturbance had the greatest effects on the nest site selection of the breeding Oriental *** intensity of human disturbance was positively correlated with the nest height of the breeding Oriental Storks in Bohai Bay and the middle and lower Yangtze River floodplain;however,nest height decreased with the abundance of food resources in the Northeast China nest *** findings indicate that the nest site selection patterns of Oriental Storks showed flexible adaptive *** safer environments,nests were lower and closer to food resources,which allows parent storks to invest more in the ***,in areas where human activity was intense,nests were higher to ensure the safety of their *** measures that could be taken to improve the breeding habitat of Oriental Storks include increasing the percentage of wetland areas in nesting areas to enhance food resources availability and setting artificial nests at suitable heights in potential nesting grounds to encourage ***,the establishment of soft barriers around the nesting areas could increase

关键词： Adaptive strategies Breeding range expansion Habitat characteristics Nest site selection Oriental storks

Linking moisture and near-surface wind with winter temperature to reveal the Holocene climate evolution in arid Xinjiang region of China

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Geoscience Frontiers 2022年第6期13卷 16-29页

作者： Fuyuan Gao Junhuai Yang Dunsheng Xia Hao Lu Shuyuan Wang Kaiming Li Zhenqian Wang Zhipeng Wu Jiaxin Zhou Fuxi Shi College of Urban Environment Lanzhou City UniversityLanzhou 730070China key laboratory of Western China’s Environmental Systems(Ministry of Education) College of Earth and Environmental SciencesLanzhou UniversityLanzhou 730000China key laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China Georges Lemaitre Center for Earth and Climate research Earth and Life InstituteUniersitéCatholique de LouvainLouvain-la-Neuve 1348Belgium key laboratory of State Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of poyang lake watershed College of ForestryJiangxi Agricultural UniversityNanchang 330045China Yulong Snow Mountain Cryosphere and Sustainable Development Field Science Observation and research Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhou 730000China

An increasing number of palaeo-climatic records have been reported to identify the Holocene climate history in the arid Xinjiang region of northwest China. However, few studies have fully considered the internal linkages within the regional climate system, which may limit our understanding of the forcing mechanisms of Holocene climate change in this region. Here, we systematically consider three major issues of the moisture/precipitation, temperature and near-surface wind relevant to the Holocene climate history of Xinjiang. First, despite there still has debated for the Holocene moisture evolution in this region, more climatic reconstructions from lake sediments, loess, sand-dunes and peats support a long-term regional wetting trend. Second, temperature records from ice cores, peats and stalagmites demonstrate a long-term winter warming trend during the Holocene in middle-to high-latitudes of Asia. Third, recent studies of aeolian sedimentary sequences reveal that the near-surface winds in winter gradually weakened during the Holocene, whereas the winter mid-latitude Westerlies strengthened in the Tienshan Mountains. Based on this evidence, in the arid Xinjiang region we propose an early to middle Holocene relatively cold and dry interval, with strong near-surface winds;and a warmer, wetter interval with weaker near-surface winds in the middle to late Holocene during winter. Additionally,we develop a conceptual model to explain the pattern of Holocene climate changes in this *** the early to the late Holocene, the increasing atmospheric COcontent and winter insolation,and the shrinking of high-latitude continental ice-sheets, resulted in increasing winter temperatures in middle to high latitudes in the Northern Hemisphere. Subsequently, the increased winter temperature strengthened the winter mid-latitude Westerlies and weakened the Siberian high-pressure system,which caused an increase in winter precipitation and a decrease in near-surface wind strength. T

关键词： Holocene climate change Moisture Temperature Near-surface wind strength Siberian high-pressure system Mid-latitude Westerlies