珠三角地区城市化与生态环境的交互胁迫关系及耦合协调度

       Abstract: Rapid urbanization is one of the most important motive forces for our national economic develop- ment. In this paper, the comprehensive evaluation index system on urbanization and eco-environment devel- opment in the Pearl River Delta region is established, based on the framework of “ validation of interactive coercing- application of dynamic coupling- judgment of coordinative types ” . The entropy method is adopted to determine the index weights. The interactive coercing nonlinear regression model and the coupling coordi- native degree calculation model are simultaneously used to empirically analyze the interactive coercing rela- tionship and coordination type between urbanization and eco- environment in 9 cities of this region since 2000. Studies show that there exist interactive coercing relationships between urbanization and eco-environ- ment system in the Pearl River Delta region. Urbanization causes strong coercing on eco-environment, and the eco- environment has obvious constraint on enhancing the level of urbanization. The evolution path agrees with the double exponential function. For the cities with good economy, the urbanization level is high- er when the inflection point arises. The appearing time of cities with good economy is later than the cities with poor economy. The coordinative development between urbanization and eco-environment in this region is in accord with the developing mechanism of "S" type.