三峡库区万州土壤质量指标选取与综合评价的研究

Study on the Selection of Soil Quality Index and Integrative Evaluation in Wanzhou in There Gorges Reservoir Area

运用层次分析法对研究区域的土壤进行了较为全面、科学的评价,依据主成分分析法建立了三峡库区土壤质量评价的最小数据集,并确定各评价因子的权重分配,根据专家经验和因子贡献率确定土壤质量评价权重,然后结合万州地区的土壤特性,参考等级法划分土壤质量评价指标的确定方法,建立了土壤质量评价指标,对库区土壤质量进行了综合评价。

Thie scientific and comprehensive evaluation about soil in the area was conducted with the layer analytical method, and according to main composition analysis built up minimum data set（MDS） about soil quality in There Gorges reservoir area was built,the weight of soil quality evaluation was confirmed,and then combined the characteristic of soil,the synthesized evaluation to soil quality in the area was drawn out.