基于生境质量和生态廊道的国土空间生态修复关键区研究——以丹巴县为例

Research of ecological restoration crucial areas based on habitat quality and ecological corridors-- A case study of Danba County

识别关键区是开展国土空间生态修复规划的前提。本文基于生境质量与生态廊道共同识别丹巴县生态修复关键区。结果显示:(1)1985—2020年,全县平均生境质量指数大于0.95,常年低生境质量区位于丹巴县县界边缘;(2)丹巴县共识别出8个生态源地与16条生态廊道,廊道网络结构复杂;(3)丹巴县共识别出生态夹点26处、障碍点18处、断裂点22处,这些生态夹点、障碍点、断裂点以及常年低生境质量区均为生态修复关键区。总之,丹巴县生态修复关键区整治应采取森林抚育、天然牧草地保护等自然恢复措施为主,结合生态复绿、造林固坡等人工措施为辅。

To identify crucial area was an important prerequisite for ecological restoration of national land space.This paper employed habitat quality and ecological corridor to identify crucial area of ecological restoration in Danba County.The results showed that:①The average habitat quality index of the whole county was greater than 0.95 from 1985 to 2020,and the perennial low habitat quality area was located at the border of Danba County.②A total of 8 ecological sources and 16 ecological corridors had been identified in Danba County,which indicated the complex network structure of corridor.③A total of 26 ecological pinch points,18 obstacle points and 22 fault points had been identified in Danba County.These ecological pinch points,obstacle points,fault points and perennial low habitat quality areas were crucial areas for ecological restoration.In conclusion,the crucial areas of ecological restoration in Danba County should mainly take natural restoration measures such as forest tending and natural grassland protection,supplemented by artificial restoration measures such as ecological restoration,afforestation and slope stabilization.