基于AHP与改进型MEDALUS模型耦合的科尔沁沙地土地沙漠化敏感性综合评价

段翰晨, 黄背英

Comprehensive evaluation of land desertification sensitivity in the Horqin Sandy Land based on the coupling of AHP and improved MEDALUS model

Hanchen Duan, Beiying Huang

表1 土壤指标类别、分值及权重

Table 1 Categories， scores and weights of soil indicators

指标 类别 描述 分值 权重 土壤 质地S1 1 L, SCL, LS, CL 1 0.0074 2 SC, SiL 1.2 0.0158 3 C, SiC 1.6 0.0342 4 S 2 0.0724 土壤 含水 量S2 1 >0.18 m3·m-3 1 0.0195 2 0.15~0.18 m3·m-3 1.3 0.0417 3 0.13~0.15 m3·m-3 1.5 0.0902 4 <0.13 m3·m-3 2 0.1910 土壤 有机 质S3 1 >3.5% 1 0.0195 2 2%~3.5% 1.2 0.0417 3 1.5%~2% 1.6 0.0902 4 <1.5% 2 0.1910 土壤 深度S4 1 >120 cm 1 0.0032 2 90~120 cm 1.2 0.0068 3 40~90 cm 1.6 0.0147 4 <40 cm 2 0.0311 坡度S5 1 <5° 1 0.0074 2 5°~15° 1.2 0.0158 3 15°~25° 1.5 0.0342 4 >25° 2 0.0724