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《Chinese Journal of Ecology》 2015-01
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Spatiotemporal patterns of typical landscapes in the Yuqiao watershed,Tianjin

CHEN Ping;LI Chong-wei;WANG Zhong-liang;MENG Wei-qing;BAO Shan-shan;XIE Hui-jun;Tianjin Key Laboratory of Water Resources and Environment,Tianjin Normal University;State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences;  
Changes in typical landscapes have an important influence on the eco-hydrological processes and thus water environment security at the watershed scale. In this study,we adopted land use / cover change trajectories in combination with landscape ecology approaches,to investigate the spatiotemporal variability in typical landscapes of Yuqiao watershed,Tianjin during the past 30 years based on Landsat MSS images from 1984 to 2013. The land use / covers exhibit remarkable changes,with 50% and 33% decreases in woodland and farmland,respectively. The changes in land use / cover occur largely in north hilly and northern plain regions,representing about 63. 11% of the whole watershed,of which about 96. 65% of changes is caused by human activity. The variation of typical landscapes has a similar pattern to that of the whole watershed,exhibiting an overall upward trend in landscape fragmentation for each landscape type with lowered connectivity. The landscape diversity reveals a trend of gradual increase and the heterogeneity of landscape pattern is enhanced.
【Fund】: 国家自然科学基金项目(31270510和41301096);; 国家科技支撑计划项目(2012BAC07B02);; 教育部新世纪优秀人才支持计划(NCET-10-0954);; 天津市高等学校“创新团队培养计划”(TD12-5037)资助
【CateGory Index】: P901
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