关键词: 三峡库区, 城市化, 生态环境, 耦合关系

Abstract: There are complicated coupling mechanisms between the process of urbanization and the evolvement of ecoenvironment, by which the relationship between urbanization and ecoenvironment evolves along an invertU curve. This coupling curve has five spatial types when using spatial samples to measure, i.e. descending type, U type, ascending type, invertU type and another descending type. The evolvement sequence of these types obeys the “law of denial's denial”. By the methods of CA (Correlation Analysis), PCA (Principal Component Analysis), and AHP (Analysis of Hierarchy Process), this paper synthetically evaluates the urbanization level and ecoenvironment conditions of the 15 districts in the Three Gorges \{Area,\} and argues the coupling relationships between them. The results are as follows: the spatial type of relationships between urbanization and ecoenvironment in Chongqing reservoir area is" U" curve; Urbanization and environment have the common trend along the Yangtze River. All of above reflect that the coupling relationships between urbanization and ecoenvironment have "dualistic structure" characters; the urbanization in the study area has more dependency than destruction on the ecoenvironment.

Key words: urbanization, eco-environment, coupling relationships, the Three Gorges Area