摘要
针对我国多数综合评价研究中存在信息屏蔽和主观性的问题,尝试采用物元分析法对我国城市土地生态水平进行评价,构建了评价指标体系,建立了城市土地生态水平评价的物元模型,并以滨州市为例进行了实证研究。研究结果显示:2002年和2005年,滨州城市土地生态水平都未达到第Ⅳ级(即"较差"水平),但是都具备向第Ⅳ级(即"较差"水平)转化的条件。2005年滨州城市土地生态水平比2002年部分有好转,向第Ⅱ级(即"良好"水平)转化的趋势更加强烈;城市废气和废水过度排放是滨州市城市土地生态水平提升的关键制约因素。研究结论表明:物元模型能够揭示单个评价指标的分异信息和综合评价结果的中间信息,适用于城市土地生态水平的评价。
To solve the problem of asymmetric information and the influence of subjectivity in major integrated assessment researches, this paper tries to employ the method of matter element to evaluate ecological level of urban land, The paper composes a system of indicators and builds a model based on the matter element method. Then the model is applied for the evaluation of the ecological level of land in Binzhou City. The results shows that the ecological level of urban land in Binzhou City in 2002 and 2005 did not reach the standard of a worse degree （ Ⅳ level） , but both of them already have the condition to turn to it. Comparing with 2002, the level started to turn better to some extent in 2005 and had the stronger trendency to change into a better degree （ Ⅱ level）, The over emission of the city waste gas and waste water was verified to be the key obstacle for further improvement. The result also shows that the matter-element model is suitable to assess the ecological level of urban land, because it can reveal the different information of every single indicator and the middle state information of the whole evaluation.
出处
《生态学报》
CAS
CSCD
北大核心
2009年第7期3818-3827,共10页
Acta Ecologica Sinica
基金
国家社会科学基金资助项目(03AJY003)
国家科技支撑计划资助项目(2006BAJ11B03)
关键词
生态水平
城市土地
物元分析
评价模型
ecological level
urban land
matter-element analysis
assessment model
