摘要
以云贵高原典型区赫章县耕地为研究对象,建立基于GIS的县级耕地资源空间数据库及属性数据库,运用层次分析法对赫章县耕地地力进行评价。结果表明,赫章县耕地地力共划分为6个等级,一级地占全县耕地面积的0.68%,二级地占7.20%,三级地占3.38%,四级地占28.77%,五级地占35.04%,六级地占24.92%。运用主成分分析法和专家实地调查法对赫章县耕地地力评价结果进行验证,结果表明运用层次分析法评价的结果符合赫章县耕地地力实际情况。
Through constructing the special database and attribute database based on GIS,the arable land productivity of Hezhang county was evaluated using the method of analytic hierarchy process(AHP).The productivity of arable land in Hezhang county was divided into 6 levels.The first level land accounted for 0.68% of the total land,the second,third,fourth,fifth,and sixth level land accounted for 7.20%,3.38%,28.77%,35.04% and 24.92% respectively.Then,the evaluation result was verified using principal component analysis(PCA) and experts field investigation.The verification results showed that evaluation result with AHP was in good coincidence with the reality of arable land productivity in Hezhang county.
出处
《湖北农业科学》
北大核心
2013年第4期798-802,806,共6页
Hubei Agricultural Sciences
基金
贵州数字农业技术研究平台建设项目(院所创新[2008]011号)
贵州数字农业技术研究创新能力建设项目(黔科合院所创能[2011]4001)
关键词
耕地地力评价
层次分析法
主成分分析法
贵州省赫章县
arable land soil productivity evaluation
analytic hierarchy process(AHP)
principal component analysis(PCA)
Hezhang county of Guizhou province
