摘要
根据陕西省以及11地市(区)1997-2006年耕地变化和社会经济数据,采用主成分分析法探讨陕西省各地市(区)耕地面积变化的驱动力及其差异。结果表明:陕西省省域耕地面积变化第一驱动力为社会经济因素,第二驱动力为退耕还林政策;根据驱动因子内容划分,咸阳、宝鸡、渭南、榆林、商洛属于产业拉动型,铜川和延安属于投资推动型;西安、汉中和安康属于社会经济综合驱动型;10个地级市均受到退耕还林政策的驱动,杨凌示范区则由于特定的发展时期受到固定资产投资的驱动影响。陕西省11地市(区)耕地变化的第一驱动力存在区域上的差异,第二驱动力差异较小。
Based on the statistics of the cultivated land areas of Shaanxi and its 11 districts the driving forces and regional differences of cultivated land area changes were studied by the method of principal components analysis. The outcomes indicated that socioeconomic factor was the first driving force for cultivated land change, while reforestation of the cultivated land was the second. According to the loading indexes of component, the driving force of cultivated land variation of Xianyang, Baoji, Weinan, Yulin and Shangluo were influenced by industries, and that of Tongchuan and Yanan by investment. Cultivated land area changes of Xian, Hanzhong and Ankang were driven by socioeconomic factor. Reforestation of the cultivated land was the second driving force in the ten of the districts, and else asset investment had an impact on Yangling. The first driving force of the cultivated land area variation existed regional difference, while the second one was closer among districts.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2010年第2期12-16,共5页
Journal of Arid Land Resources and Environment
关键词
土地资源
耕地变化驱动力
主成分分析
陕西省
land resource
cultivated land variation driving force
principal components analysis
Shaanxi Province
