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开发建设项目生态修复环境效益评价
于坤霞1, 刘昱1, 李鹏1, 李占斌1,2, 王岩博1, 张晓明3, 解刚3
1.西安理工大学 省部共建西北旱区生态水利国家重点实验室, 陕西 西安 710048;2.中国科学院 水利部 水土保持研究所 黄土高原土壤侵蚀与旱地农业国家重点实验室, 陕西 杨凌 712100;3.中国水利水电科学研究院 流域水循环模拟与调控国家重点实验室, 北京 100048
摘要:
[目的]近年来煤炭等开发建设项目引起的环境问题日渐成为全社会关注的焦点,评价生产建设项目生态修复效益,量化生产建设项目水土保持生态工程的效果,旨在为今后开发建设项目评价提供可参考的技术与经验。[方法]以陕西省子长县永兴煤矿资源整合项目为例,建立开发建设项目水土保持生态修复效益评价体系,计算了各评价指标在不同建设时期的隶属度值,分别采用主成分分析法和层次分析法计算指标权重,并根据拉格朗日乘子法对指标权重进行了综合,最后采用生态效益指数对开发建设项目生态修复环境效益进行综合评价。[结果]考虑了主客观信息在内的拉格朗日乘子法计算得到的综合权重能够反映出开发建设项目各建设时期不同指标的特点;基于综合权重计算得到的生态效益指数显示该项目在建设前期生态效益指数最高,而试运行期的生态效益指数0.392高于施工期0.318,表明生态修复工程在试运行期开始发挥了水土保持效益。[结论]提出的生态修复效益评价体系及方法可行,可以为其他生产建设类项目生态效益评价提供一定的参考。
关键词:  开发建设项目  生态修复  评价指标  评价模型  生态效益指数
DOI:10.13961/j.cnki.stbctb.2018.04.026
分类号:
基金项目:国家重点研发计划项目“黄河流域水沙变化趋势集合评估”(2016YFC0402407);水利部公益性行业科研专项经费“生产建设项目水土保持生态效应监测与评价技术研究”(201501045);国家自然科学基金项目(51779204)
Environmental Benefits Evaluation of Ecological Restoration in Construction Projects
YU Kunxia1, LIU Yu1, LI Peng1, LI Zhanbin1,2, WANG Yanbo1, ZHANG Xiaoming3, XIE Gang3
1.State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China, Xi'an University of Technology, Xi'an, Shaanxi 710048, China;2.State Key Laboratory of Soil Erosion and Dry-land Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China;3.State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
Abstract:
[Objective] In recent years, environmental problems caused by coal and other construction projects have become the focus of the whole society, while evaluating the benefit of ecological restoration in construction projects and quantifying the effect of soil and water conservation in the construction projects can provide reference for the construction project evaluation in the future.[Methods] Taking resource integration project at Yongxing coal mine in Zichang County, Shaanxi Province as an example, the benefit evaluation system of soil and water conservation and ecological restoration for construction projects has been established, the values of different evaluation indexes in different construction periods have been scaled, the weights of the indexes which are calculated by the principal component analysis and the analytic hierarchy process method have been synthesized according to the Lagrange multiplier method, and the benefit index is finally used to make a comprehensive analysis of the environmental benefits of ecological restoration.[Results] The comprehensive weight calculated by the Lagrange multiplier method, which considers the subjective and objective information, can reflect the characteristics of the different indexes in the construction projects during each construction period. The ecological benefit index based on the comprehensive weight calculation shows that the ecological benefits index of this project in the early stage is the highest, while the ecological benefit index of the trial operation period is 0.392, which is higher than the construction period 0.318. The ecological restoration project began to play the role of soil and water conservation in the trial operation period.[Conclusion] The evaluation system and evaluation method of ecological restoration benefit proposed in this paper are feasible, which can provide a certain reference for other production and construction projects.
Key words:  construction projects  ecological restoration  evaluation index  evaluation model  soil and water conservation