The purpose of the paper is to measure the excessive loss of cultivated land, define the rational target of cultivated land, and resolve the quota distribution issues of cultivated land protection.
研究目的：计量耕地过度性损失，界定耕地保护理性目标，破解耕地保护指标分配难题。
Significant changes in land geographical differences: between 1996 to 2001 showed changes in the central and northern areas of cultivated land dense, scattered distribution in other regions;
耕地变化存在显著的地域差异：1996年至2001年之间呈现中部和北部地区耕地变化密集分布，其他区域处于零散分布状态；
Through GIS modeling, this paper reveals the factors that determine the distribution of the different land use types, and special emphasis is put to cultivated land.
通过 GIS建模 ，本文分析了我国土地利用的变化与其影响因子之间的相互作用关系 ，并着重对耕地的变化及其空间分布进行了模拟。
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