【摘要】 基于1987年、1993年、2000年TM卫星遥感数据,在GIS技术支持下,建立了涨渡湖流域土地利用数据库,通过提取湿地信息,对该流域湿地资源动态变化进行了分析,并从人文因素方面阐述了湿地变化的原因。研究表明:①涨渡湖流域土地利用格局是以湿地为主,其他用地为辅的形式;②1987~2000年涨渡湖流域地区天然湿地和人工湿地均减少,其中水田减少面积最大;③在1987~2000年14年期间,影响涨渡湖流域湿地结构变化的主要因素是产业结构调整、围湖(滩地、沼泽)造塘、城市化等。更多还原

【Abstract】 Based on the remote sensing images of 1987, 1993 and 2000, the wetland spatial database in Zhangdu watershed was built up and the images were interpreted as supported by GIS. After an analysis on the change of the wetland in Zhangdu Watershed, the authors explained the reason for wetland change from the point of human activities. Three essential conclusions are drawn as follows: Firstly, wetland is the main land use form in Zhangdu Watershed; Secondly, natural wetland and artificial wetland decreased from 1987 to 2000, and the water land area decreased most; Thirdly, the factor that affects the change of wetland in Zhangdu Watershed is adjustment of industry and urbanization.更多还原