摘要
目前,我国对于乡镇和农村的生态环境问题关注不够,缺乏有针对性的镇域生态环境风险评价方法。在现场调研和总结前人成果的基础上,采用频率统计法初步遴选关键指标,确定43项针对镇域生态环境的预选指标;然后采用理论与实际分析法、特尔菲专家咨询法、粗糙集的属性约简方法对预选指标进行层层筛选,最后提出一套系统的镇域生态环境风险评价指标体系。该指标体系包括自然环境风险、社会环境风险、经济环境风险以及风险影响因子,共27项指标。
This article is to present our work on setting-up an eco-environmental hazard indicators assessment system for a township. Firstly, a set of pre-determined indictors, say, about 40, are selected by means of frequency statistics method （FSM） in accordance with the previous research results and national standard in China. Then, an analysis theory and practice method （ATP） are to be chosen to eliminate some unnecessary indictors for the case in-situ for a Chinese town. For example, sanitary latrine coverage indictor, agricultural fertilizer dosage indictor and solid waste of life treatment rate indictor used to be undertaken in China＇ s towns to take the place for the agricultural pesticide residues pass rate indictor and large-scale livestock breeding farms effluent compliance rate indictor, which are not only included in the recording system in China＇s case, but also too complicated and expansive for long-lasting monitoring and registration. Thirdly, even the so-called Delphi expert consultation law which is commonly adopted in the developed countries to filter the rest indictors may ,not come into the state insitu for the case in question. Therefore, it is necessary for us to adopt a rough set attribute reduction system （RSARS） to deal with our mission, for the Rough Set Theory is a recently developed method aimed at dealing with uncertain problems and inadequacy data. The method proves to help us to over-come some overlapping contradictory indictors and ＇improve their independency. And, finally, it has to be pointed out that the eco-environment hazard assessment indicators system proposed here includes four sets of indicators, that is, the natural environment, social environment, economic environment and their comprehensive impact factors, a total of which is 27 indicators, which are indispensable for the system and play their due roles in evaluating the status quo of a town＇ s eco-environment objectively. And in turn it should be taken as a part for its planning and development.
出处
《安全与环境学报》
CAS
CSCD
北大核心
2010年第2期112-118,共7页
Journal of Safety and Environment
基金
天津市应用基础与前沿技术研究计划项目(08JCYBJC10700)
关键词
环境学
镇域生态环境风险
指标体系
粗糙集的属性约简方法
评价
特尔菲专家咨询法
environmentalology
eco-environment risk in the domain of town
indicator system
rough set attribute reduction method
evaluation
Delphi expert consultation
