兰州市城市生态系统健康评价

从城市生态系统健康内涵出发,运用熵权法和模糊数学评价法对2004—2008年兰州市城市生态系统健康进行定量分析。结果表明,2004—2008年的评价结果依次为不健康、病态、病态、病态、病态。近5年以来,兰州市生态系统健康形势逐年好转,但总体水平仍不高,将来还有很大的发展空间。明确了兰州市城市生态系统健康的制约因子,提出改善城市生态系统健康状况的措施,为兰州市城市生态建设提供科学依据。

Health Evaluation of Urban Ecosystem of Lanzhou City

Based on the connotation of the health of urban ecosystem,this paper applied the method of the entropy value and the method of fuzzy mathematical models to evaluate the health of urban ecosystem.Research results from 2004 to 2008 were unhealthy level,illneas level,illness level,ill- ness level,illness level respectively. However, the degree of the health condition of Lanzhou City was increasing year by year during the recent 5 years, the general level was not high. Furthermore, this paper made clear the restriction factors of urban ecosystem health of I.anzhou. Thereby, certain measures were out forward in an attemot to pmvide a scientific basis for ecological improvement of Lanzhou.