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《Resources and Environment in the Yangtze Basin》 2004-03
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LI Yan~1,ZHAO Kun~1,FANG Jing-yun~1,XIE Ping~2 (1. Department of Ecology, Peking University, Beijing 100871, China; 2. Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan 430072, China)  
Using Landsat TM imageries (taken in 1987, 1993 and 1999) and GIS method, the spatial and temporal changes in land use of a typical urban lake watershed, Donghu Lake of Wuhan, were analyzed between 1987 and 1999. The satellite images were classified into seven land use/cover categories: water body, broadleaf forest, coniferous forest, shrub-grass land, bare land, cropland and urban land. Overall classification accuracy on satellite imagery for three period was all above 85%. Our results showed that urban land expansion (from 9.1% to 29.6% of study area) and farmland increase (from 7.0% to 13.9%), at the cost of reduction of water body (from 30.4% to 23.8%) and forestland (from 33.6% to 24.3%), are main characteristics of land use change in the watershed. At the same time, landscape diversity of the watershed decreased, as dominance increased during the study period. While degree of fragmentation changed differently between dominant landscape components and others. Because forestland becomes major source of the increment of the urban land and farmland, the ecological impact of urbanization on this urban lake watershed is remarkable. Several physical and economical factors contribute to land use pattern and its change in the study area.
【Fund】: 国家重点基础研究发展规划项目(TG20046801);; 中国科学院东湖生态系统定位站基金资助.
【CateGory Index】: F301.2
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2 CHEN Wei,SONG Zhuo-yan,GUO Hui,WANG Hao,WEI Ting,LI Nan,ZHANG Kai-yi,YANG Shu-xiang,DAI Kai-jia,PAN Zu-ting (College of Life Sciences,Donghu Branch of Wuhan University,Wuhan 430212 Hubei,China);Bird Resources of Urban Lakes & Wetlands in Winter and Habitat Analysis in Wuhan[J];Forest Inventory and Planning;2007-05
3 MIN Jie,GAO Wei,LI Xiao-yun,ZHANG An-lu(Land Management Department of Huazhong Agricultural University,Wuhan 430070);Analysis on Spatial-Temporal Changes of Land Use and Ecosystem Services Value in Wuhan City[J];Journal of Soil and Water Conservation;2006-04
4 LI Guo-yan1,2,DONG Ya-wen1,LIU Xiao-mei1,ZHU Hong-yun1,2,WANG Wei-xia1,2(1.Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences, Nanjing 210008;2.Graduate University of Chinese Academy of Sciences,Beijing 100039);Dynamic Change of Land Use and Landscape Response in the Watershed of Tianmu Lake[J];Journal of Soil and Water Conservation;2008-01
5 HUANG Pujiang1,2,LIU Yanfang1,2,LIU Chang1,2,JIANG Qinghu1,2 1.School of Resource and Environmental Science,Wuhan University,Wuhan 430079,China;2.Key Laboratory of Geographic Information System,Wuhan University,Wuhan,430079,China;Study on evolution of urban lakes in Wuhan based on RS/GIS[J];Ecology and Environmental Sciences;2012-09
6 JIANG Qinghu1,2,LIU Yanfang1,2,HUANG Pujiang1,2,YE Qingqing1,2 1.School of Resource and Environmental Science,Wuhan University,Wuhan 430079,China;2.Key Laboratory of Geographic Information System,Wuhan University,Wuhan,430079,China;The source-sink effect between urban diffuse pollution and Lake watershed: A case study in East Lake of Wuhan[J];Ecology and Environmental Sciences;2013-03
7 LIU Shi-bin;LI Jiang-feng;LAO Yan-ling;WANG Jian-ying;School of Public Administration,China University of Geosciences;College of Tourism,Huaqiao University;;Research on the Land Use Patterns in the Ecological Shelter Zone of Liangzi Lake[J];Research of Soil and Water Conservation;2013-04
8 ZHANG Yun-xia(Higher Education Research Institute,Jianhan University,Wuhan430056,China);On Cultural Characteristics Establishment of East Lake Scenic Area and Major Tasks[J];Journal of Wuhan Institute of Technology;2008-01
Chinese Journal Full-text Database 10 Hits
1 DING Wei-cui1,TANG Jiang-long2,YANG Qiang3(1.College of Geosciences and Geodetic Engineering,East China Institute of Technology,Fuzhou 344000,China;2.Land Management Institute,Nanjing Agricultural University,Nanjing 210095,China);Land-use/Cover and Analysis from 1992 to 2005 in Yantai Area[J];Journal of Hebei Agricultural Sciences;2007-01
2 XIANG Wu-sheng,DING Tao,LI Xian-kun,HUANG Yu-qing,HE Cheng-xin,LU Shu-hua(Guangxi Institute of Botany,Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences,Guilin 541006,Guangxi,China);Land Use/Cover Change and Its Influence on Eco-environment Benefit in Lijiang River Basin[J];Hubei Agricultural Sciences;2011-05
3 WAGN Shu-juan(Tangshan Teacher's College Resource Management,Tangshan 063000,Hebei,China);Research on Land Use Change of the South Lake in Tangshan[J];Hubei Agricultural Sciences;2012-02
4 ZHANG Yong-rong1,2,ZHOU Zhong-fa2,3,MA Shi-bin1(1.Department of Environment and Resources,Liupanshui Normal College,Liupanshui 553004,Guizhou,China; 2.The Key Laboratory of Karst Mountainous Ecological and Environment of Guizhou Province / The State Key Laboratory Incubation Base,Guiyang 550001,China;3.Institute of South China Karst,Guizhou Normal University,Guiyang 550001,China);Analysis on the Mechanism of Land Use Change in Industrial Resource Based City:A Case Study of Downtown Zone in Liupanshui in Guizhou Province[J];Hubei Agricultural Sciences;2012-12
5 LIU Ying~1,ZHAO Rong-qin~(2,3)(1.Department of Construction Management,Zhengzhou Institute of Aeronautical Industry Management,Henan Zhengzhou450052,China;2.College of Environment and Planning,Henan University,Henan Kaifeng475001,China;3.Department of Geotechnical Engineering,North China Institute of Water Conservancy and Hydroelectric Power,Henan Zhengzhou450045,China);The Advances and Trends of Land Use and Land Cover Change Research[J];;2004-03
6 LIU Jing-yu~1,QIAN Le-xiang~2,MIAO Chang-hong~1 (1.College of Environment & Planning,Henan University,Henan Kaifeng 475001,China;2.College of Geographic Science,Guangzhou University,Guangdong Guangzhou 510405,China);A Study on the Land Use/Land Cover Change in the Typical Region of Yiluo River Drainage Basin from 1987 to 1999[J];;2005-06
7 FAN Feng-lei1,QIU Mao-hui2,WANG Yun-peng3(1.School of Geography of South China Normal University,Guangzhou,GD 510631,China;2.Guangzhou Polytechnic of Science and Trade,Guangzhou,GD 511442,China;3.Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,GD 510640,China);Monitoring the Land Use Change and its' Conversion Mechanism of Economic Core Corridor of Pearl River Delta Based on Remote Sensing Data in recent years[J];Journal of East China Institute of Technology;2007-03
8 MENG Fei~(1,2) LIU Min~1 HOU Li-jun~1 ZHANG Xin-yin~1 WU Jian-ping~1 1.Department of geography,Key Laboratory of Geographic Information Science,Ministry of Education,East China Normal University,Shanghai 200062,China; 2.Department of Civil Engineering,Shandong Architecture and Engineering Unirersity,Jinan Shandong 250014,China;Spatial-Temporal Change of Land Use in Pudong New Area[J];Journal of East China Normal University(Natural Science);2006-04
9 TIAN Zhi-hui~1,CHEN Ke-xia~(1,2),DA Liang-jun~1,GU Hong-mei~(1,3) (1.Shanghai Key Laboratory for Ecology of Urbanization Process and Eco-restoration. Department of Environment Science,East China Normal University,Shanghai 200062,China; 2.Hangzhou Broadacre Urban Planning Mastermind Consulting Co.,Ltd,Hangzhou 310013,China; 3.Biology Department of Zhoukou Normal College,Zhoukou Henan 466000,China);Diversity,spatial pattern and dynamics vegetation under urbanization in shanghai(Ⅲ):Flora of the ruderal in the urban area of Shanghai under the influence of rapid urbanization[J];Journal of East China Normal University(Natural Science);2008-04
10 YANG Jiong1,WANG Wei2(1.College of Tourism and Resources Environment,Taishan University,Taian Shandong 271021,China;2.College of Resources and Environment Science,Hebei Normal University,Shijiazhuang 050016,China);Dynamic evaluation of land use intensity in Taian city[J];Journal of East China Normal University(Natural Science);2010-02
China Proceedings of conference Full-text Database 10 Hits
1 Cui shuqing Zhao Lai Lu Chengwen (College of Territorial Resource and Tourism,AnHui Normal University,Wuhu 241000,China);Land Use Chang and Its Ecological Effect in Huangshan City[A];[C];2004
2 Li Pengshan~1,Xie Genzong~2,Su Shan~2,Meng Xiangcai~2,Yu Lei~2 (1 Department of Tourism,Hainan Technology and Business College,Haikou570203,China; 2 College of Geography and Tourism,Hainan Normal University,Haikou 571158,China.);Research on the Eco-environmental Effects of Land Use Change in the Coastal Resorts of Haikou City Based on GIS[A];[C];2011
3 HU Pan ZHANG Jianzhao WANG Xingping;Study on Basic Public Service Facilities’ Supply Characteristics in Metropolitan Fringe Area——A case study of Nanjing City[A];[C];2011
4 Key Laboratory of 3D Information Acquisition and Application of Ministry of Education, Beijing 100048,China Key Laboratory of Resources Environment and CIS of Beijing Municipal,Beijing 100048,China;基于RS和GIS的耕地变化及驱动力分析-以封丘市为例[A];[C];2009
5 CAI Dong, LI Man-chun, CHEN Zhen-jie, WEI Wei, HU Wei, (School of Geographic and Oceanographic Science, Nanjing University, Nanjing 210093);A Method of Division of Urban Fringe Based on Message Entropy----A case study in Nanjing City[A];[C];2009
6 Feifei ZHAO~1,Dong LIU~2,Ping LV~3 1 School of Water Conservancy & Civil Engineering,Harbin Heilongjiang,150030,China 2 Postdoctoral Scientific Research Mobile Station of Agriculture and Forestry Economic Management, Northeast Agricultural University,Harbin Heilongjiang,150030,China 3 School of Water Conservancy & Civil Engineering,Harbin Heilongjiang,150030,China;Researches Progress on Complexity Drivers of Soil and Water Resources Utilization Structure[A];[C];2011
7 Zhang Benyun~(1,2) Shen Huaifei~2 Zheng Jinggang~2 Wu Guoxi~2 (1.Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China;2.Urban and Environmental Institute,Xuchang University,Xuchang 461000 China);GIS-based Analysis on the Landscape Spatial Patterns of Land-use in Henan Province[A];[C];2008
8 Tian Lei (Research Institute of Highway the Ministry of Communications,Beijing,100088,China);Study on Application of Dynamic Change of Vegetation Fraction in Environmental Protection for the Check and Accept Project by Remote Sensing[A];[C];2009
9 Han Xuemin,Pu Lijie (School of Geographic and Oceanographic Sciences,Nanjing University,Nanjing 210093,China);STUDY ON DEVELOPING AND PREDICTING ANALYSIS OF CULTIVATED LAND IN RAPIDLY URBANIZED AREA——A CASE STUDY OF WUJIANG CITY[A];[C];2009
10 Xuan Ming-fei (Sociology department ,Shan Dong university , Jinan 250100,P.R.China);“The edge area of the city”: the rib of urbanization in china[A];[C];2004
Chinese Journal Full-text Database 10 Hits
1 CHEN Xue-qing~1,SU Chun-li~2(1.Geological Environment Center of Hubei Province,Wuhan,Hubei 430051;2.School of Environmental Studies & MOE Biogeology and Environmental Geology Laboratory,China University of Geosciences,Wuhan,Hubei 430074);ANALYSIS OF THE HEAVY METAL POLLUTION OF MOSHUIHU LAKE IN WUHAN CITY[J];Resources Environment & Engineering;2006-04
2 YOU Wen-hui, LIU Shu-yuan, QIAN Xiao-yan (Department of Environmental Science, East China Normal University, Shanghai 200062, China);A Study on Polluted Water Body Purification with Economical Aquatic Plants[J];JOURNAL OF EASTCHINA NORMAL UNIVERSITY(NATURAL SCIENCE);2000-01
3 Liu Shukun;The report of visiting Japan by Liu Shukun:River adjustment and ecological rehabilitation(5)[J];Haihe Water Resources;2002-05
4 Liu Lujun Wang Jianmin Ye Yaping;Theory and Practice of Ecological Construction[J];ENVIRONMENT HERALD;2000-04
5 HUANG Liang\+1, LI Wei\+2, WU Ying\+1, ZHANG Jing 1,3 , ZHOU Ju\|zhen\+1 (1. State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai\ 200062,China; 2.Wuhan Institute of Plant,CAS,Wuhan\ 430074,China; 3.College of;Distribution of Heavy Metals in Aquatic Plants of Some Lakes in the Middle Reach of the Yangtze River[J];Research of Environmental Sciences;2002-06
6 WANG Jia\|ji1, CHENG Wen\|lian2(1.Chinese Research Academy of Environmental Sciences,Beijing100012,China; 2Institute of Chemical Defense,Beijng100025,China) ;Original Discussing of Research on Ecological Rehabilitation and Exploitation and Utilization of the Group of Lakes:Case Study in Dongxihu District of Wuhan[J];Research of Environmental Sciences;2003-05
7 Solid Waste Dump Identification WANG Xin\ DUAN Ning\ XU Zhenyuan (GIS Key Lab,Chinese Research Academy of Environmental Sciences,Beijing\ 100012);Satellite Remote Sensing in the Application of Urban[J];RESEARCH OF ENVIRONMENTAL SCIENCES;1997-05
8 Li Shuangcheng 1,Zheng Du 2, Yang Qinye 2(1. Department of Urban and Environmental Sciences, Peking University, The Center for Land Studies,Lab for Earth Surface Processes, the Ministry of Education, Beijing 100871,China ; 2. Institute of Geographical;Some Issues on Assessing Natural Capital of Environment and Ecosystems[J];Chinese Journal of Enviromental Science;2001-06
9 Zheng Tianzhu,Zhou Jianren,Wang Chao(College of Environmental Science and Engineering,Hehai University, Nangjing 210098,China);Study on Polluted Riverway Ecosystem Rehabilitation Mechanism[J];Chinese Journal of Enviromental Science;2002-S1
10 YANG Liu,MA Ke-ming,Guo Qing-hai,ZHAO Jing-zhu (Research Center for Eco-Environmental Sciences; Chinese Academy of Sciences, Beijing 100085, China);Impacts of the Urbanization on Waters Non-Point Source Pollution[J];Environmental Science;2004-06
【Secondary References】
Chinese Journal Full-text Database 10 Hits
1 ZHAO Wei,SU Zhao-yang,CHENG Jin-long (College of Environment & Planning,Henan University,Henan Kaifeng 475004,China);Based on the Value of Ecosystem Services of Land Use Assessment in Kaifeng[J];Journal of Henan University(Natural Science);2009-02
2 ;Study on Ecological Environmental Impact Assessment of Land Use Program——Taking Long County as Example[J];Environmental Protection Science;2012-02
3 XU Li1,LIU Shaobo2,LIU Yunguo1,WU Jiyou3,Nuzaaiti ·Aibibu1,SONG Huaxiao1,CHEN Beibei11. Collage of Environment Science and Engineering,Hunan University,Changsha 4100822. Collage of Architecture,Hunan University,Changsha 4100823. Hunan Forestry Academy,Changsha 410004;Effects of land use change on ecosystem services value in red soil hilly region of Central Hunan Province——A case study in Changsha City[J];Acta Scientiae Circumstantiae;2009-08
4 XIONG Ying1,2,ZENG Guang-ming1,WANG Ke-lin3(1.College of Environmental Science and Engineering,Hunan Univ,Changsha,Hunan 410082,China;2.Institute of Urban-rural Development and Planning,Changsha Univ of Science and Technology,Changsha,Hunan 410076,China;3.Institute of Subtropical Agriculture,CAS,Changsha,Hunan 410125,China);Responses of Regional Ecological Service Function to Land Use Change——a Case Study of Hunan Province[J];Journal of Hunan University(Natural Sciences);2008-09
5 LIU Shao-bo1,XU Li2,WANG Xiao-fan1,WEI Chun-yu,YIN Yi-cheng1 (1.Collage of Architecture,Hunan Univ,Changsha,Hunan 410082,China;2.Collage of Environmental Science and Engineering,Hunan Univ,Changsha,Hunan 410082,China);Effects of Land Use Change on the Ecosystem Service Value in Changsha City[J];Journal of Hunan University(Natural Sciences);2010-04
6 LIU Ke-yu,LIAO Shan-gang(School of Geographical Science,Fujian Normal University,Fuzhou Fujian 350007,China);Responses of the Ecosystem Service Value to Land Use Change in Fuzhou City[J];Journal of Heze University;2010-05
7 LI Hui~1,ZHANG LiHua~1,CHEN Xiaoling~(2,3)(1.Geography department,China University of Geoscience,388 LuMo Road,Wuhan 430074;2.Key Laboratory of Poyang Lake Wetland and Watershed Research,Ministry of Education,Jiangxi Normal University,Nanchang 330027;3.State Key Lab of Information Engineeringin Surveying Mapping and Remote Sensing,Wuhan University,Wuhan 430079);Land use change and spatial distribution characteristics based on RS and GIS in Poyang Lake area[J];Journal of Huazhong Normal University(Natural Sciences);2009-04
8 LIU Xiaowei~(1,2,3),WANG Xiuzhen~(*1,2),HUANG Jingfeng~3,BI Xuemei~4,LI Bo~5 (1.College of Grass industry and environmental science,Xinjiang Agriculture University,Urumqi 830058 China; 2.Institute of Remote Sensing and Earth Sciences,Hangzhou Normal University,310036 China;3.Institute of Remote sensing on Agriculture and Information technology application,Zhejiang University,Hangzhou,310058 China;4.Jiangsu Earthquake Administration,Nanjing,210014,China;5.College of Public Administration,Zhejiang University,Hangzhou 310058,China);Impact on Ecosystem Service Value by Land Use Planning A Study Case of Chun'an Country[J];Bulletin of Science and Technology;2011-05
9 YANG Shu-xiang,WANG Yan-zhi,ZHANG Hui,FENG Qian-qian,PAN Zu-ting(Donghu College,Wuhan University,Hubei 430212,China);Water Quality Status of Tangxun Lake and Countermeasures[J];Forest Inventory and Planning;2011-04
10 WANG Yuan-Yuan LU Fa-Li LINGHU Rong-Gang BAN Yu-Feng CHEN Xue(Forestry Bureau of Linyi,Linyi 27600,Shandong);The Plan of Building the Yi River Wetland in Linyi[J];Wetland Science & Management;2011-02
China Proceedings of conference Full-text Database 7 Hits
1 BAI Ze-long~(1,2),BAO An-ming~1,ZHAO Jin~1 (1.Xinjang Institute of Ecology and Geography,Chinese Academy of Science,Urumqi 830011,Xingjian,China; 2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China);Impacts of Land Use Changes on Ecosystem Services Value in Ebinur Lake basin[A];[C];2011
2 ;Impact of land-use changes on the ecosystem service value in Poyang Lake Basin[A];[C];2011
3 DU Jia-qiang~(1,2),WANG Jin-sheng~2,SHU Jian-min~1,TENG Yan-guo~2 (1 Chinese Research Academy of Environmental Sciences,Beijing,100012,China;2.College of Water Science, Beijing Normal University,Beijing,100875,China);Effects of land use change on the ecosystem service value in Chongqing city[A];[C];2008
4 Zhang Fengtai~1 Su Weici~(1,2) Zhao Weiquan~1 (1.Department of Geography,Chongqing Normal University,Chongqing,400047,China 2.Research Center of Environment and Development of Karst Resources,Guiyang,Guizhou,550001,China);A Research on the Service Value Change in the Urban Ecosystem of Chongqing Based on the LUCC[A];[C];2009
5 Su Chao-yang Miao Chang-hong (Research Center of Yellow River Civilization and Sustainable Development and College of Environment and Planning,Henan University,Kaifeng 475004,China);Based on the Value of Ecosystem Services of Land Use Planning assessment in Kaifeng[A];[C];2008
6 MIN Jie Zhang anlu (1Management Department of Tianjin Polytechnic University,Tianjin 300160,China;2 Land Management Department of Huazhong Agricultural University,Wuhan 430070,China);Scale Effect Analysis of Driving Mechanism of Rural-urban Land Conversion[A];[C];2007
7 DU Guoming LIU Yansui (Institute of Geographic Science and Natural Resources Research,CAS,Beijing 100101,China);The effect of agricultural development on changes in regional ecosystem services value——take the example of northern part of the Sanjiang Plain[A];[C];2013
【Secondary Citations】
Chinese Journal Full-text Database 6 Hits
1 Wang Hongzhi-1,Li Rendong-2 (1.School of Life Science,Hubei University,Wuhan 430062,China; 2.Inst itute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430077,China);Probes into theories and methods of some key problems in the regional sustainable development[J];JOURNAL OF HUBEI UNIVERSITY(NATURAL SCIENCE EDITION);2000-03
2 Wang Hongzhi 1, Li Rendong 2, Zhu Junlin 1 (1.School of life Science, Hubei University, Wuhan 430062,China; 2.Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077,China);A method swiftly to build land use information system of Center China area[J];Journal of Hubei University(Natural Science Edition);2000-04
3 YONG Shi peng 1,LIU Shu run 2,NA Ri su 3,OU Xiao kun 4(1.Life Sciences College,NeiMongol University,Hohhot 010021,PRC; 2.NeiMongol Education College,Hohhot 010010,PRC; 3.NeiMongol Farm and Stockbreeding College,Hohhot 010021,PRC; 4.Institute of;Cataloguing the Natural Seed Plant Diversityin Hohhot, The City Located in the Grassland Area of North China[J];ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS NEIMONGOL;2000-01
4 YONG Shi peng 1,LIU Shu run 2,NA Ri su 3,OU Xiao kun 4 (1.Life Sciences College,NeiMongol University,Hohhot,010021,PRC; 2.NeiMongol Education College,Hohhot,010021,PRC; 3.NeiMongol Farm and Stockbreeding College,Hohhot,010021,PRC; 4.Institut;A Preliminary Analysis and Study on the Urban Flora and Urban Vegetation in Hohhot the City Located in the Grassland Area of North China[J];ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS NEIMONGOL;1999-02
5 JIANG Yuan, LIU Shuo(Institute of Resources Science,Beijing Normal University;Open Research Laboratory of Environmental Changes and Natural Disasters,Ministry of Education,Beijing 100875,China);Flora features under urban land use[J];JOURNAL OF NATURAL RESOURCES;1999-04
6 Zhuang Dafang Liu Jiyuan(Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101);STUDY ON THE MODEL OF REGIONAL DIFFERENTIATIONOF LAND USE DEGREE IN CHINA[J];JOURNAL OF NATURAL RESOURCES;1997-02
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