农业现代化研究2011，Vol.32Issue(2)：238-242,256,6.
改进AHP模型在黄土高原沟壑区土壤质量评价中的应用——以陕西省长武县耕地为例
Application in Soil Quality Evaluation on Improved AHP (Analytic Hierarchy Process) Model of Loessial Gully Region-A Case of Changwu County in Shaanxi Province
摘要
Abstract
Changwu County was chosen as the research area at the Loessial gully region.Selected soil physical and chemical properties and soil enzyme activity was taken as evaluating indicators which was closely related to soil quality,such as soil organic (SOM) matter, total N, alkaline N, total P, available P, available K, trace element, soil enzyme activity,clay content, and cation exchange capacity (CEC).The traditional analytic hierarchy process (AHP) was improved through establishing comparison matrix by adoption of a new exponent scale.The weight values were determined for each evaluating indicator.Finally, the calculation of soil quality index was obtained by comprehensive indexing method of fuzzy mathematics.The results indicated that the process of consistency test to the comparison matrix was avoided by the establishment of effective hierarchical analysis structure in which a new exponent scale was applied as an improvement of traditional AHP.The weight values of each indicator determined by AHP model more significant than that gotten by partial correlation coefficient model whereby ignored equalization trend of weight values.Variance test indicated that there was a significant difference between weight values determined by the two models.Evaluation results implied that Changwu soil quality was significantly impacted by topographic positions.Furthermore, soil quality index ranged from 0.19 to 0.71, while medium level accounted for 75.2％, and about 17.9％ of the state of soil quality is poor.关键词
层次分析模型/指数标度法/土壤质量评价/黄土高原/长武县Key words
analytic hierarchy process model/ exponent scale method/ soil quality evaluation/ loess plateau/ Changwu County分类
农业科技引用本文复制引用
岳西杰,葛玺祖,王旭东..改进AHP模型在黄土高原沟壑区土壤质量评价中的应用——以陕西省长武县耕地为例[J].农业现代化研究,2011,32(2):238-242,256,6.基金项目
中国科学院知识创新工程重大项目(编号:KSCX1-YW-09-07). （编号:KSCX1-YW-09-07）
