基于能值分析的煤炭矿区复合生态系统评价

煤炭矿区复合生态系统评价是对其进行有效管理及调控的手段之一。研究了煤炭矿区复合生态系统内涵,剖析了煤炭矿区复合生态系统的典型特征,论述了运用能值分析方法评价复合生态系统的特殊性;进而,构建了煤炭矿区复合生态系统及其子系统的能值评价指标。选择山东省龙口矿区北皂煤矿为研究对象,进行了实证研究。应用实际数据,测算了2006—2012年复合生态系统及子系统各个能值评价指标。研究结果表明,能值理论与能值分析是评价煤炭矿区复合生态系统的有效方法,各项指标变化反映了复合生态系统的演进趋势;不可再生煤炭资源的过度消耗、可再资源利用率低是这一系统的典型特征;能值评价指标的测算结果表征环境子系统负荷较小。研究结果可为实施有效的煤炭矿区复合生态系统管理提供智力支持和决策参考依据。

Assessments of integrated ecosystems in mining areas based on emergy analysis

Assessment of the integrated ecosystem in a mining area is one of the means of managing and regulating it. This paper studies the implications of the integrated ecosystem in mining areas, analyzes its characteristics and explains the emergy methods used to assess the ecosystem. The emergy evaluation indicator system for the ecosystem and its subsystem is discussed in further detail. Beizao coal mine in the Longkou mining area in Shandong province is taken as the research subject for an empirical study. Original data is employed to measure and calculate the separate emergy evaluation indicators for the years from 2006 to 2012. The results show that emergy theory and emergy analysis are effective methods to evaluate integrated ecosystems in mining areas and the change trends in the system reflected by each indicator. Excessive depreciation of nonrenewable coal resources, and low utilization ratio of renewable resources are typical characteristics for the integrated ecosystem in mining areas. The results show that the environmental burden is light. The research findings will offer researched support and the basis for making strategic decisions related to integrated ecosystem management in mining areas.