1979～2006年洪泽湖西岸临淮镇附近湖泊变化研究  

Change of Lake nearby Linhuai Town in West Bank of Hongze Lake during 1979-2006

作　　者：阮仁宗[1] 夏双[1] 陈远[1] 佘远见[1] 颜梅春[1] 

机构地区：[1]河海大学地球科学与工程学院地理信息科学系,江苏南京210098

出　　处：《湿地科学》2012年第3期344-349,共6页Wetland Science

基　　金：江苏省博士后基金项目(0602010B);江苏省自然科学基金项目(BK2008360);中央高校科研业务经费项目(2009B12714;2009B11714)资助

摘　　要：利用1979年、1988年和2006年多时相遥感影像数据,结合地面实况数据和其他辅助数据,研究1979～2006年间洪泽湖西岸临淮镇附近湖泊的变化,在地物遥感分类的基础上,计算湖泊变化频度,分析湖泊变化的原因。结果表明,湖泊水深变浅和围垦养殖是导致洪泽湖西岸临淮镇附近湖泊变化的主要原因。1979～1988年期间,洪泽湖西岸临淮镇大闸口附近的湖泊部分变化最大,昔日生长着挺水植物的湖泊变成了养殖池塘。1979～1988年期间,江苏泗洪洪泽湖湿地国家级自然保护区核心区的湖泊部分变化很小,1988～2006年期间,原来湖中的浮水植物逐渐为挺水植物所取代,生长沉水植物的湖泊部分相对比较稳定。研究发现,临淮镇东南方向湖区在过去有大量的挺水植物生长,但是1988年后,这些生长着挺水植物的湖泊被开垦成围网养殖区。临淮镇南面和王沙岛西部生长着沉水植物的湖泊水域基本没有变化。The main purpose of this paper is to explore lake change nearby Linhuai town in west bank of Hongze Lake during 1979-2006.The study area consists of the core area and most of buffer area of Hongze Lake Wetland National Nature Reserve in Sihong county,Jiangsu province.In the paper,multi-temporal remote sensing images in 1979,1988 and 2006 were used for the identification and classification of wetlands.Firstly,Landsat 5 TM image in 2006 was classified.The representative samples were also taken from the images in 1988 and 1979.The samples were also mapped into the spectral feature space.The spectral characteristics were analyzed and compared with those of the samples taken from the image in 2006.Based on the spectral characteristics and the relationship of clusters of each class in the spectral feature space,the images in 1988 and 1979 were interpreted.The lake change was mainly caused by the water depth change and fish farming.From 1979 to 1988,the lake near Dazhachou has changed;most of the lake has been changed into fish ponds and fish farming areas;and lots of emerged plant had disappeared.In the core area of the reserve,the dominant species is Phragmites australis.From 1979 to 1988,the lake in core area of the reserve did not changed.However,from 1988 to 2006,lots of floating-leaved plant has been replaced by emerged plant.The submerged aquatic vegetation has changed little during the period.Secondly,in 1979,lots of standing water plants existed in the waterways of the lake to the southeast of Linghuai town.But they had disappeared before 1988 due to the reclamation of the lake.Finally,it was found that the waterways of the lake to the south of Linghuai town and to the west of Wangsha Island were stable during 1979-2006.

关 键 词：湖泊 洪泽湖西岸 江苏泗洪洪泽湖湿地国家级自然保护区核心区 变化 频度 

分 类 号：P941.78[天文地球—自然地理学]