摘要
根据广西壮族自治区1978～2005年的统计资料,利用主成分方法分析影响广西壮族自治区耕地变化的驱动因子,揭示耕地面积减少的驱动机制,分析广西壮族自治区近30年来耕地数量动态变化趋势。研究结果表明,广西近30年来耕地面积经历了波动性减少的变化过程,人均耕地面积处于持续下降趋势;通过主成分分析,把影响耕地变化的13个因子进行归纳,认为经济发展水平、人口压力、农业产业结构调整和农业现代化水平是影响广西耕地变化的主要驱动力,并针对驱动力提出一定建议与对策。
According to Guangxi Zhuang Autonomous Region 1978-2005 statistics,using the principal component analysis,the driving factors which influenced the cultivated land change in Guangxi Zhuang Autonomous Region were studied.The dynamic change trend of cultivated land in Guangxi Zhuang Autonomous Region during the past 30 years was discussed.The results showed that the cultivated land area experienced a volatility decrease process in Guangxi nearly 30 years.Per capita arable land was in a declining trend.13 factors were summarized to 4 by principal component analysis.Economic development,population growth,agricultural structure adjustment and agricultural technology improvement were the leading driving factors of the cultivated land area changes in Guangxi.At last the suggestions were put forward for driving factors.
出处
《安徽农业科学》
CAS
北大核心
2011年第8期4792-4795,共4页
Journal of Anhui Agricultural Sciences
基金
广西高校"地质资源与地质工程"人才小高地建设项目(桂教人[2005]80)
关键词
耕地动态变化
驱动力分析
广西壮族自治区
Cultivated land dynamic changes
Driving force analysis
Guangxi Zhuang Autonomous Region
