干旱半干旱区生态保护红线划分研究——以“多规合一”试点榆林市为例
马琪, 刘康, 刘文宗, 李婷

Zoning the ecological redline in arid and semiarid regions: Taking Yulin city as an example in the context of an integrated multi-planning
Qi MA, Kang LIU, Wenzong LIU, Ting LI
表2 生态敏感性评价指标体系及分级赋值
Tab. 2 Evaluation index system of ecological sensitivity and its classification and voluation
评价内容 指标 一般敏感 敏感 极敏感
水土流失敏感性 降雨侵蚀力R ≤100 (100, 600] >600
土壤可蚀性K ≤0.024 (0.024, 0.043] >0.044
坡度坡长LS ≤50 (50, 300] >300
植被覆盖度因子C >0.6 (0.2, 0.6] ≤0.2
土地沙化敏感性评 干燥指数I ≤1.5 (1.5, 16.0] >16.0
≥6 m/s起沙风天数W ≤10 (10, 30] >30
土壤质地K 黏质 砾质、壤质 沙质
植被覆盖度因子C >0.6 (0.2, 0.6] ≤0.2
分级赋值 1 3 5