城市生态系统是城市社会经济发展的基础和载体,但城市生态系统健康状况问题中包含多种不确定性因素,而集对分析可以有效处理这种不确定性。论文以特大型综合性城市兰州为研究案例,基于集对分析方法,构建包括生产力、生活态、生态势和生机度的城市生命力指数,诊断兰州城市生态系统2002至2008年间的健康状态。研究结果表明:2002~2008年,兰州市城市生态系统健康状况呈上升趋势,其健康联系度由2002年的0.4751增至2008年的0.5179,但总体水平仍不高。该研究为兰州市城市规划和生态建设推荐了重点行动领域,同时也可为兰州市实施可持续发展战略提供决策依据。
Evaluation of urban ecosystem health is urgently needed because it is the developmental basis of urban social-economic system. As a systematic analysis method to deal with uncertainty issues, Set Pair Analysis (SPA) is employed to evaluate the urban ecosystem health in this paper by taking Lanzhou as a case. We study the urban ecosystem by employing SPA from the index aspects consisting of productivity power, living status, ecological ascendancy and vital force, representing the situation of urban economic subsystems, social subsystem, natural subsystem, and ecological regulatory subsystem. The results show that healthy degree of Lanzhou city ecosystem rises continuously. Connection degree of health increased from 0.4751 in 2002 to 0.5179 in 2008, but generally the level is not high. The results can provide scientific reference for regional sustainable development.