关键词: 生态敏感性, GIS, 邢江河, 贵州省

Abstract:

To understand the existing problems in Xinjiang River Basin, combined with the related data and research results, 5 ecological sensitivity indicators of soil erosion, rocky desertification, acid rain, habitat and waters buffer zone are quantified and abstracted through raster data GIS spatial analysis method based on GIS. The spatial overlay analysis and comprehensive ecological sensitivity analysis for all the assessment indexes are conducted by multi-factor weighted sum model. It is concluded that the rank order of the ecological sensitivity area of Xinjiang River Basin is that: low sensitivity zone (34.50%),  high sensitivity zone (25.44%), extreme sensitivity zone (23.67%), medium sensitivity zone (12.65%), non-sensitivity zone (3.73%), the extreme sensitivity zone and high sensitivity zone account for 49.11%; the extreme sensitivity zone is mainly distributed in upstream, the high sensitivity zone is distributed in upstream and midstream, and the medium and low sensitivity zone scatters everywhere in the basin; non-sensitivity zone exists in the upstream. The spatial distribution of ecological sensitivity is different in Xinjiang River Basin, the ecological sensitivity is high there and the ecological environment is worse, so the ecological environment protection should be focused during the economic and social development.

Key words: ecological sensitivity, GIS, Xinjiang River Basin, Guizhou