【摘要】 利用1990~2004年的统计和普查数据,分析探讨了徐州市20世纪90年代以来耕地数量变化及区域差异;利用主成分分析法分析影响徐州市耕地动态变化的驱动因子,揭示耕地变化的驱动机制,据此提出耕地保护的对策措施.更多还原

【Abstract】 According to statistical and survey data from 1990 to 2004,dynamic changes of quantitative and regional differences of cultivated land in Xuzhou city since 1990s are analysed;with the method of principal component analysis,the driving forces and the motive mechanism of cultivated land changes are revealed.Based that,the article puts forward the countermeasures for the protection of cultivated land.更多还原