河西地区生态敏感性演变格局及分区治理
邓晓红, 宋玉琳, 李宗省, 赵婷婷

Evolution pattern of terrestrial ecological sensitivity in the Hexi region and its zoning governance
Xiaohong Deng, Yulin Song, Zongxing Li, Tingting Zhao
表1 生态敏感性指标体系
Table 1 Ecological sensitivity index system
一级指标二级指标敏感性
不敏感轻度敏感中度敏感高度敏感极敏感
沙漠化相对湿润指数(-0.4,+∞)(-0.65,0.4](-0.8,-0.65](-0.95,-0.8]（-∞,-0.95]
冬春季风速>6 m·s-1天数[32](0,15](15,30](30,45](45,60](60,+∞)
土壤含砂量(0.0.4](0.4,0.51](0.51,0.63](0.63,0.76](0.76,1]
冬春植被覆盖度(0.7,1](0.5,0.7](0.3,0.5](0.15,0.3](0,0.15]
水土流失R值(0,25](25,100](100,400](400,600](600,+∞)
土壤质地石砾、沙粗砂土、细砂土、黏土面砂土、壤土砂壤土、粉黏土、壤黏土砂粉土、粉土
地形起伏度(0,20](20,50](50,100](100,300](300,+∞)
植被覆盖度(0.7,1](0.5,0.7](0.3,0.5](0.15,0.3](0,0.15]
盐渍化蒸发量/降雨量(0,1](1,3](3,10](10,15](15,+∞)
土壤盐渍化指数[33](0,0.2](0.2,0.27](0.27,0.41](0.41,0.56](0.56,1]
生境质量生境质量指数(0.73,1](0.46,0.73](0.26,0.46](0.1,0.26](0,0.10]
生长季植被覆度(0.7,1](0.5,0.7](0.3,0.5](0.15,0.3](0,0.15]
分级赋值13579