昆山城市化与生态系统服务的关系定量研究

在通过对昆山市1990~2006年城市化水平和生态系统服务价值变化评价的基础上,分析区域城市化与生态系统服务之间的耦合关系。结果表明:昆山的城市化相对水平在研究年份内不断提高,从1990年的0.18上升到2004年的0.60;用价值量表征的生态系统服务水平在研究年份的变化呈先下降后上升的趋势;区域的生态系统服务相对水平与城市化相对水平之间的关系呈不规则的"U"型特征,二者的关系可以用方程式y=-2.5873x4+5.2542x3+0.4227x+0.98(R2=0.89)较好的表征。

Quantitative Research on the Relationship between Urbanization and Ecosystem Services of Kunshan City

Based on the quantitative evaluation of urbanization level and ecosystem service values of Kunshan city from 1990 to 2006,relationship between regional urbanization and ecosystem service was analyzed.It was showed that： the comparative urbanization level of Kunshan city increased gradually during the researched years from 0.18 in 1990 to 0.60 in 2004;ecosystem service values of Kunshan city decreased at first from year 1990 to 2001 and following increased in the rest 6 years;the coupling relationship between urbanization and ecosystem service is ＂U＂ curve,which can be described by equation y=-2.5873x4＋5.2542x3＋0.4227x＋0.98（R2=0.89）.