延安市土地生态风险时空格局演变研究

段艺芳, 任志远, 周晓, 孙艺杰

Spatio-temporal variation in the land ecological risk of Yan’an City

Yifang DUAN, Zhiyuan REN, Xiao ZHOU, Yijie SUN

表2 土地生态风险等级划分标准

Tab.2 Classification standards of land ecological risk

等级 Ⅰ级 Ⅱ级 Ⅲ级 Ⅳ级 Ⅴ级 风险指数 ≤0.1 (0.1,0.25] (0.25,0.4] (0.4,0.55] >0.55 风险状态 低 较低 中等 较高 高