基于RS和GIS的白洋淀“引岳济淀”景观格局分析(英文)

By using TM remote sensing images of Baiyangdian Wetland in 1989,1999,2003 and 2004,taking the water area between Anxin County and Cangzhou where most of Baiyangdian Wetland water body lies for landscape classification,changes in landscape pattern of Baiyangdian before and after the water supplement were analyzed with landscape indexes calculated by Fragstats3.3. The results showed that after the water supplement,from the perspective of landscape cell index,fractal dimension of major ecosystems in Baiyangdian decreased to some extent;from the perspective of landscape diversity index,diversity index of the study region also decreased,which demonstrated that ecosystem diversity in this region reduced,land cover grew to simplification;and the decreasing evenness degree of the study region also showed the uneven development of its ecosystems. That is to say,water supplement has brought favorable ecological changes to the eco-environment of Baiyangdian,which has further optimized the health condition of ecosystems in this region.

基于RS和GIS的白洋淀“引岳济淀”景观格局分析

利用1989年、1999年、2003年与2004年白洋淀地区TM遥感影像,选取白洋淀水体最为集中的安新县与沧州之间的区域进行景观分类,用Fragstats3.3计算的景观水平上的各种指数对白洋淀补水前后的景观格局变化进行分析,结果表明:补水后,从景观单元指数分析,白洋淀大部分生态系统类型的分维数都有所减少;从景观多样性指标分析,白洋淀研究区多样性指数有所减少,反映了生态系统类型多样性减少,表明土地覆盖正朝单一方向发展,研究区均匀度减少,反映了研究区生态系统类型不均匀化的发展方向。补水为白洋淀的生态环境带来良好的生态变化,从而优化白洋淀生态系统的健康状况。