摘要
本文通过对张掖市耕地动态变化的分析,得出影响该市耕地变化的驱动力为自然因素和社会经济因素。指出自然因素中水资源居于首要位置,采用主成分分析方法对社会经济因素进行归纳,概括为经济发展、人口增长和农业科技进步3个方面。并针对耕地变化的不同驱动力提出具体的对策措施。
By analyzing the dynamic change of cultivated lands in Zhangye City, it was found that behind the change there were two groups of driving forces: natural factors and social economic factors. Of the former, water resource were the major component. With the method of principal component analysis, the social economic factors could be summed up as development of economy, growth of population and advancement in agricultural technology. In the end, in response to different driving forces, different specific countermeasures were broght forth.
出处
《土壤》
CAS
CSCD
北大核心
2003年第6期485-489,共5页
Soils
基金
国家重点基础研究项目G2000048701课题
西北师范大学科技与创新工程二期项目
青年基金项目资助。
关键词
耕地变化
驱动力
对策
张掖市
Changes of cultivated land, The driving forces, Countermeasures, Zhangye City
