重庆市建设占用耕地与经济发展的脱钩研究

为了能够更好的揭示耕地变化与经济发展之间的关系,文章采用环境领域的脱钩理论和方法,分析重庆市2001—2009年建设占用耕地和非农GDP数据的关系。研究结果表明:(1)2001—2004年脱钩弹性系数变化剧烈,脱钩状态由扩张负脱钩转变为扩张连接状态,建设占用耕地的压力先增加后减小,波动性较大;(2)2004—2007年脱钩状态由扩张连接转变为强脱钩状态,建设占用耕地在一定程度上受到控制;(3)2007—2009年脱钩状态变化平稳,基本上处于强脱钩状态,建设占用耕地压力减小。总的来看,重庆市建设占用耕地与经济增长之间的变动关系由不稳定向稳定状态发展,耕地保护政策、措施实施的效果明显。随着经济的平稳较快发展,建设占用耕地的压力将会增大,为此,应加大对耕地保护的管理力度,采取节约、集约的土地利用政策和措施。

Decoupling Analysis between Cultivated Land Occupation by Construction and Economic Development in Chongqing City

The purpose of this study aimed to reveal the relationship between cultivated land occupation by construction and economic development. The purpose based on a theory of decoupling, which derived from environment research, analysis the data between cultivated land occupation by construction and non-agricultural GDP in Chongqing province from 2001 to 2009. The results indicated that： （1） at the first stage from 2001 to 2004, elasticity values of decoupling changed dramatically, changing from a kind of expansion negative decoupling status to expansion connection status. The pressure from arable land occupied by construction first increased, and then decreased; （2） at the second stage from 2004 to 2007, elasticity values of decoupling changed smoothly, showing a transition from a expansion connection to a strong decoupling, to some extent, the pressure from arable land occupied by construction was controlled; （3） at the third stage from 2004 to 2007, elasticity values of decoupling vary smoothly, showing the status was a strong decoupling. The pressure from arable land occupied by construction decreased. As a whole, elasticity values of deeoupling between arable land occupied by construction and non-agriculture GDP from change dramatically to change smoothly. This means arable land protection has already shown a marked positive effect. With the stable and fast development of economy in the future, the pressure from arable land occupied by construction will be likely to increase. So the management for arable land occupied by construction should be strengthened. Necessary policies and measures about the protection of farmland, such as economical and intensive utilization of arable land resources should be taken.