基于ENDVI-SI3特征空间的盐渍化反演模型及风险评估

张思源, 岳楚, 袁国礼, 袁帅, 庞文强, 李俊

Salinization inversion model based on ENDVI-SI3 characteristic space and risk assessment

ZHANG Siyuan, YUE Chu, YUAN Guoli, YUAN Shuai, PANG Wenqiang, LI Jun

表4 乌拉特前旗土壤盐渍化风险评估分级

Tab.4 Grading for risk assessment of soil salinization in Urad Front Banner

风险等级 风险程度 风险值 面积/km2 面积比例/% 1 风险极大 ≥0.75 401.17 8.31 2 风险很大 [0.5,0.75) 1 420.06 29.43 3 风险较大 [0.3,0.5) 803.66 16.66 4 一般风险 [0.2,0.3) 796.60 16.51 5 风险较小 <0.2 1 403.39 29.09