...价结果，本文还采用了加 权和法对土壤质量指数进行计算： SQI＝∑（K）×c｛ i＝1 式中，sqt是土壤质量指数（Soil quality index），Ci 是各个评价指标的隶属度值，K是第i个评价指标 的权重，n是评价指标的个数。
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山体坡面不同坡位下土壤质量综合指数(P i)研究表明土壤质量指数随山体坡面位置相对海拔高度的降低而增高。
The research of the composite index number (PI) of soil quality in different soil locations suggests that, the soil quality index increases as the altitude of mountain slope location decreases.
位于中、高海拔，人为干扰最轻的山地雨林原始林具有最好的土壤养分保持能力，土壤综合质量指数最高。
The tropical mountain rain forest located at mid-high altitude with slight anthropogenic disturbance had the highest soil nutrient-holding capacity and integrated soil quality index.
土壤质量综合指数随植被恢复年限的增加而增加；
Soil quality index increased with vegetation restoration during over 140 years.
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