干旱地区农业研究2011，Vol.29Issue(3)：213-220,8.
改进耕地资源优势度模型在半湿润区的应用——以陕西省长武县为例
Application of improved development dominance ratio model of cultivated land resources in sub-humid areas
摘要
Abstract
In connection with the deficiencies of the development dominance ratio model of cultivated land resources on calculating productive potentiality and combining the specific features of agricultural fanning in Changwu County, this paper proposes an improved development dominance ratio model of cultivated land recourses, then calculates the dominance ratio of cultivated land recourses in Changwu County and conducts further verification and analysis. The results indicate that the dominance ratios of cultivated land recourses in Changwu County are 0. 886 and 0. 836 in the year 1990 and 2008 respectively. It leads to the decrease in the dominance ratio of cultivated land recourses in Changwu County that the size of cultivated land decreases from 22 344.47 hm2 in 1990 to 11 464 hm2 in 2008, by 10 880 hm2 in 18 years, accounting for 49％ of the size of cultivated land in 1990 and the proportion of cultivation area for grain crops rises from 81％ in 1990 to 84％ in 2008. The analysis indicates that the improved development dominance ratio model of cultivated land resources fits the changes of the actual size of cultivated land and the proportion of cultivation area for grain crops well.关键词
耕地资源/优势度模型/改进/长武县Key words
cultivated land resources/ dominance ratio/ Changwu County分类
管理科学引用本文复制引用
何锋,王力,孙保敬,卢柳燕..改进耕地资源优势度模型在半湿润区的应用——以陕西省长武县为例[J].干旱地区农业研究,2011,29(3):213-220,8.基金项目
中国科学院知识创新工程项目(KSCX-YW-09-07) （KSCX-YW-09-07）
西北农林科技大学科研业务费(QN2009040) （QN2009040）
