水土保持通报2012，Vol.32Issue(2)：122-126,131,6.
改进灰色关联模型在秦巴山区耕地地力评价中的应用
Application of Modified Grey Relational Model to Evaluating Farmland Productivity in Qinling-Bashan Mountainous Area
摘要
Abstract
Chosen Hanyin County of Shaanxi Province as the study area,this research intended to assess the quantitative methods of farmland productivity evaluation.On the basis of field investigations,sampling and chemical analysis,the automatic and quantitative evaluation procedure was realized by adopting the modified grey relation model,which was improved with incorporation of analytics hierarchy process and fuzzy math.The proposed evaluation method is of positive significance in scientifically managing and utilizing the cultivated land resources in China.The results show that farmland productivity in the study area could be classified into five grades,with grade Ⅰ accounting for 7.32% of the total area,grade Ⅱ for 15.41%,grade Ⅲ for 21.61%,grade Ⅳ for 32.47%,and grade Ⅴ for 32.47%,respectively.The results also indicate that the farmland productivity in the study area ranged from inferior to intermediate;the farmlands of the river valleys have relatively high productivity,the farmlands of the rolling-hill areas have low productivity,and the farmlands of mountainous areas have the lowest.关键词
秦巴山区/耕地地力/灰色系统/综合评价Key words
Qinling-Bashan mountainous region/farmland productivity/grey system/comprehensive evaluation分类
农业科技引用本文复制引用
方睿红,常庆瑞,宋利珍,宋丰骥..改进灰色关联模型在秦巴山区耕地地力评价中的应用[J].水土保持通报,2012,32(2):122-126,131,6.基金项目
国家重点基础研究（973）发展计划项目“区域水土流失过程与趋势分析” （）
国家自然科学基金项目 （）
国家科技基础性专项重点项目“秦巴山区生态群落与生物种质资源调查” （）
