基于分形理论的湖州市城市生态系统健康评价  

Urban ecosystem health assessment of Huzhou,Zhejiang Province of East China based on fractal theory

作　　者：马爽爽[1] 陈奕[1,2] 许有鹏[1] 

机构地区：[1]南京大学地理与海洋科学学院,南京210093 [2]浙江省水利水电勘测设计院,杭州310002

出　　处：《生态学杂志》2012年第7期1817-1822,共6页Chinese Journal of Ecology

基　　金：国家自然科学基金重点项目(40730635);水利部公益项目(201201072;200701024)资助

摘　　要：针对当前城市生态系统不断恶化的问题,将景观格局指数、水环境参数与社会经济指标相结合,构建生态系统健康评价指标体系。利用自相似理论与分形理论计算系统分维数,并建立分形维数与生态系统健康之间的联系,从而对城市化不同发展阶段的生态系统健康进行定量评估和动态趋势分析。通过对1997、2001和2005年湖州市生态系统分维数的分析计算,得到3期分维数分别为0.8934、1.1723和1.2619,预示着生态系统朝非健康状态发展。研究表明,湖州市城市化的发展已对生态系统造成了不利影响,因此在未来城市的规划与建设中需更加注重对生态与环境的保护。In view of the deteriorating urban ecosystem,a combination of landscape pattern index,water environment parameters,and socio-economic indicators was adopted to build an urban ecosystem health assessment index system.Based on self-similarity theory and fractal theory,the system fractal dimension was calculated,and the link between the fractal dimension and ecosystem health was set up to quantitatively evaluate the urban ecosystem health status and analyze its dynamic trend at different stages of urbanization.By analyzing and calculating the ecosystem fractal dimension of Huzhou City in 1997,2001,and 2005,the fractal dimensions in the three years were obtained,which were 0.8934,1.1723,and 1.2619,respectively,foreshowing that the urban ecosystem of the City was growing towards an unhealthy condition.This study indicated that the development of Huzhou City’s urbanization had made a negative effect on the urban ecosystem,and thus,more attention should be paid to the ecological and environmental protection during urban planning and construction in the future.

关 键 词：城市生态系统健康 评价指标体系 自相似理论 分维数 湖州市 

分 类 号：X826[环境科学与工程—环境工程]