重庆市耕地资源利用与变化分析

Analysis on Cultivated Land Use Change in Chongqing

中国耕地问题长久以来一直是人们关注的热点也是难点问题。根据重庆市1952-2003年长序列耕地和经济统计数据及1997年重庆市直辖以来土地利用调查数据,重点分析了重庆市耕地利用变化与社会经济发展的关系,以及直辖以来耕地的变化情况。分析表明:①重庆市耕地变化与经济总体发展水平(GDP)的相关性较强,相关系数为0．798,但耕地面积的变化并不完全由经济社会发展引起的,引起耕地大量减少的主导因素是生态保护的需要。②重庆市1997-2003年耕地共减少21．84万hm2,减少去向由多至少依次为生态退耕、建设占用、改园挖塘和灾毁。

The cultivated land in China is always the term statistical data of cultivated land and economy, paper focuses on relation between cultivated land use hot and topic and the difficult problem. Based on longland use survey data since municipalized change and socio-economic development, an , this d the cultivated land change since municipalized. The analysis reveals that there are remarkable correlations between the cultivated land change and economy total development level with the correlative coefficient of 0.798, but the change of cultivated land is incompletely caused by economic development, and the dominant factor causing cultivated land great decrease is the ecologic protect. Cultivated land in Chongqing decreased by 218400hm^2 during 1997-2003 caused by ecological restoration, construction, agricultural frame adjustment and damage.