水科学进展2017，Vol.28Issue(1)：22-31,10.DOI:10.14042/j.cnki.32.1309.2017.01.003
三江平原沼泽湿地格局变化及影响因素分析
Dynamic patterns of change in marshes in the Sanjiang Plain and their influential factors
摘要
Abstract
To explore patterns of dynamic change in a region in which severe changes to wetlands have occurred,we studied patterns of change among marshes in the Sanjiang Plain between 1954 and 2010 using remote sensing and GIS combined with Geo-information Tupu and spatial autocorrelation methods.Marsh area within the Sanjiang Plain gradu ally decreased between 1954 and 2010,losing around 88.7％ of its total area.The number of wetland patches within the plain increased at first and then decreased slightly.The spatial clustering of marshes in the region also decreased gradually from concentrated to sporadic distribution.Additionally,analysis of the results determined that less rainfall,higher temperatures,and a decrease in runoff were main contributors to the decrease in the Sanjiang Plain marsh area.Geography and elevation also affected the degree of marsh area loss;marshes at an elevation of 20-80 m above sea level experienced the most dramatic decline.Decreases in marsh area in the Sanjiang plain also appear to be affected by agricultural development,settlement construction,wetland protection policies and the construction of reserves as well as encroaching residential areas.The degree of marsh area loss appears to increase exponentially according to dis tance from protected areas:the closer the marsh area is to a protected area,the greater the loss will be.关键词
沼泽湿地/格局变化/地学信息图谱/关联模式/三江平原Key words
marsh/dynamic patterns of change/geo-information Tupu/correlation patterns/Sanjiang Plain分类
资源环境引用本文复制引用
刘吉平,杜保佳,盛连喜,田学智..三江平原沼泽湿地格局变化及影响因素分析[J].水科学进展,2017,28(1):22-31,10.基金项目
国家自然科学基金资助项目(41071037) （41071037）
教育部新世纪优秀人才支持计划资助项目(NCET-12-0730) （NCET-12-0730）
The study is financially supported by the National Natural Science Foundation of China (No.41071037) and the Program for New Century Excellent Talents in University(No.NCET-12-0730). （No.41071037）
