中文摘要：

随着我国城镇化进程的不断加快,土地覆被和土地结构发生了巨大变化,找出两者之间的耦合关系,可以解决城镇化过程中对国土资源的影响。以耦合关系相关理论为基础,建立城镇化水平综合指标体系和国土自然生态基础指标体系,运用灰色关联度模型定量化评估了中国城镇化水平与国土资源生态基础两个子系统的耦合协调度,以期促进中国城镇化与国土自然生态基础良性互动发展,从而建立起中国城镇化与国土自然生态基础相互作用的协调发展机制。研究结果表明：城镇化水平与国土自然生态基础耦合关系大致可分三个阶段：2002-2006年、2006-2008年和2008-2011年,呈现三个＂U＂型曲线,耦合强度有不断增加的趋势。

英文摘要：

Along with the accelerating urbanization process in China,land cover and land structure are changed significantly.This study focuses on the relationships between the urbanization process and land ecological assessment in China.The goal is to seek a solution to the problems of the changed land resources in the urbanization process.Based on the related theories of coupling relationship,the authors constructed two index systems：urbanization and land ecological index systems.The authors assessed quantitatively the coupling degree between the two index systems by using the grey correlation model,in order to promote the favorable interaction and development between the urbanization development and land ecological basis.In the end,the coordination mechanism between the systems was established.The result showed that there were 3stages of the coupling relationship：stage 1was from 2002 to 2006;stage2was from 2006 to 2008;and stage 3was from 2008 to 2011,respectively.Meanwhile,the coupling trend curve showed three U-shaped patterns correspondingly with an overall upward tendency.