南京林业大学学报（自然科学版）2012，Vol.36Issue(1)：38-42,5.
洪泽湖湿地类型变化分析
Analysis of long-term change in Hongze Lake wetlands
摘要
Abstract
Wetlands have been paid great attention around the world for its particularity and importance in ecological environment, so nowadays wetland research has been in a hot field. Hongze Lake is rich in wetland resources and is of great significance in the regional eco-environment. In this paper, Hongze Lake was taken as the study area. Combining with normalized difference vegetation index ( NDVI) , optimized soil adjusted vegetation index (OSAVI) and the soil brightness vegetation index ( BVI), greenness vegetation index (GVI) , wetness vegetation index (WVI) of tasseled cap transformation. The classification has been carried out based on knowledge rules. By using classification model tailored for the classification of Hongze Lake wetlands, wetland types were effectively distinguished. Then the classification was applied to MSS and TM images of 1973, 1984 and 2006 in Hongze Lake. The results showed that the classification method based on knowledge rules is simple and easy to eliminate interference information in classification. The use of the mentioned indices in decision model can increase the overall accuracy of classification. Our study showed that the coverage of open water and wetland vegetation in Hongze Lake drastically reduced over the past 33 years from 1973 to 2006. It is necessary to take effective measurements for the protection of Hongze Lake wetlands.关键词
洪泽湖/湿地类型/归一化植被指数/最优调节土壤植被指数/缨帽变换/知识规则Key words
Hongze Lake/wetland type/NDVI/OSAVI/tasseled cap transformation/knowledge rules分类
信息技术与安全科学引用本文复制引用
夏双,阮仁宗,颜梅春,佘远贝,王玉强..洪泽湖湿地类型变化分析[J].南京林业大学学报（自然科学版）,2012,36(1):38-42,5.基金项目
江苏省自然科学基金项目(BK2008360) （BK2008360）
江苏省博士后基金资助项目 （）
河海大学人才引进基金资助项目 （）
中央高校基本科研业务费专项资金项目(2009B12714,2009B11714) （2009B12714,2009B11714）
