基于LDI方法的新济洲国家湿地公园生态健康评价

Ecological Health Assessment of Xinjizhou National Wetland Park Based on LDI Method

采用遥感影像分析结合实地调查,对新济洲国家湿地公园的土地利用类型进行了分析,基于LDI方法对该湿地公园的生态系统健康状况进行了评价。结果表明:湿地公园有草地、天然草地、林地、农田、空地、水域、道路及建筑八种土地利用类型。其中,面积最大的土地利用类型是林地,占总面积的39.61%,在各个岛屿都有分布;退耕的农田面积比例为9.47%,绝大部分分布在再生洲,目前呈自然恢复状态。整体上湿地公园的生态环境健康水平处于“健康”等级,综合指数为1.70。

Based on remote sensing image analysis and field research,the land use types of Xinjizhou national wetland park were analyzed,and the ecological health statue of the park was evaluated by using the LDI method.The results showed that there were eight land use types in wetland park:grassland,natural grassland,woodland,cropland,bareland,water area,roads and buildings.The woodland area of wetland park was the largest,accounting for 39.61%,which was located in various islands of the wetland park.The proportion of farmland converted from farmland is 9.47%,most of which are distributed in the regeneration continent and are currently in a state of natural restoration.On the whole,the ecological environment health level of wetland park was in the“health”level,with the comprehensive index of 1.70.