摘要
对宁蒗县耕地动态变化进行分析发现,1996~2008年该县耕地面积数量呈减少的趋势。依据宁蒗县国土资源局提供的土地变更调查数据和宁蒗县统计局提供的社会经济资料,选取总人口、国内生产总值、县域工业总产值等共计11个指标,结合SPSS统计方法,采用主成分分析方法对滇西北高寒山区耕地利用变化的驱动力因子进行分析。结果表明,经济发展、人口增长2个因子为影响耕地变化的主导驱动因素,同时＂退耕还林＂等政策因素也是影响宁蒗县的重要驱动机制。
On the basis of overview of the study area,by analyzing the dynamic change of farmland in Ninglang County,we can find that the farmland area in this county tended to decrease from 1996 to 2008.According to the investigation data concerning land change provided by Bureau of Land and Resources in Ninglang County and socio-economic data provided by Bureau of Statistics in Ninglang County,we select 11 indices,such as total population,GDP,total output value of county and so on,coupled with SPSS statistical method,we adopt principal component analysis method to analyze driving force factors of farmland use change in in the high and cold areas in Northwest Yunnan.The results show that the two factors of economic development and population growth are the dominant driving factors impacting farmland use change,and the policy factors,such as ＂returning farmland to forests＂,are also the important driving factors impacting Ninglang County.
出处
《安徽农业科学》
CAS
北大核心
2011年第13期8104-8106,共3页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金资助项目(40861014)
关键词
耕地变化
驱动力
主成分分析
宁蒗县
Changes of farmland
Driving force
Principal component analysis
Ninglang county
China
