白银市城市生态系统健康评价

Health evaluation on urban ecosystem of Baiyin City

在介绍了城市生态系统健康内涵的基础上,运用熵权法和模糊数学评价法计算了白银市2006～2010年城市生态系统的活力、组织结构、恢复力、生态系统服务功能和人群健康状况的相关数值,通过计算得出了相关指标所占的权重值,最后得出了城市生态系统的健康状况.结果表明:白银市城市生态系统健康形势逐年好转,从2006年病态所占的权重值34.14%下降到2010年的26.9%,虽有所下降,但总体水平仍处于病态状况.量化分析结果表明:白银市城市生态系统健康状况的活力要素、组织结构要素、恢复力要素,生态服务功能要素和人群健康状况要素均为病态.

Based on the connotation of the urban ecosystem health, the method of entropy value and fuzzy mathematical models were used to calculate the vigour, organizational structure, restoring force, ecosystem service function and crowd health indexes of urban ecosystem of Baiying City from 2006 to 2010. The weights of all the indexes were calculated,and finally the health condition of urban ecosystem of Baiy- ing City was obtained. The results showed that the urban ecosystem health of Baiyin was getting better with each passing year. The illness weight in 2006 was 34. 14%, which decreased to 26.90% in 2010. The data analysis showed that vigour, organizational structure, restoring force, ecosystem service function and crowd health indexes were all morbid.