腾格里沙漠土壤水分含量与地形、植被的关系

宁婷, 张定海, 赵有益, 江晶

Relationship between soil moisture and topography and vegetation in the Tengger Desert

Ting Ning, Dinghai Zhang, Youyi Zhao, Jing Jiang

表3 随机森林模型下影响土壤水分含量的重要度

Table 3 The importance of soil moisture under random forest modeling

排名 0~40?cm 40~200?cm 200~300?cm 1 高差(46.01%) 高差(36.40%) 坡向(48.41%) 2 灌木多度(45.33%) 灌木多度(32.07%) 高差(42.62%) 3 灌木盖度(36.30%) 草本盖度(25.90%) 坡度(34.74%) 4 生物量(31.25%) 灌木盖度(24.23%) 灌木盖度(32.27%) 5 草本盖度(29.65%) 凋落物(23.84%) 生物量(30.13%) 6 坡度(24.85%) 生物量(22.22%) 灌木多度(26.08 %)