基于“三线一单”流域开发规划替代方案环评研究

针对我国流域规划环评中替代方案不足的问题，提出基于“三线一单”环境管理要求建立评价指标体系，并采用快速影响评价矩阵（RIAM）实施规划替代方案综合评估.针对福建晋江流域开发规划环评的研究结果显示，采用研究建立的评价指标和方法可以有效地对6个规划替代方案的主要生态环境影响进行综合评价，其中方案Ⅱ在优化水资源配置、保障下游生态用水、严控小水电开发等方面更具优势，可作为推荐方案并进入详评阶段.本研究建立的替代方案评价指标和方法，对于在流域开发规划环评中落实“三线一单”管理要求、促进规划编制与环评过程互动和提高评价效率具有有利作用.

Developing a method for evaluating alternatives of watershed development planning by integrating the three-line-one-list environmental policy

Regarding the deficiency of evaluation methods on alternatives in environmental impact assessment of watershed development planning, an indicator-based approach was built up here by integrating the three-line-one-list (TLOL) environmental policy and the rapid impact assessment method (RIAM). The approach was then used to evaluate the six alternatives of Jinjiang watershed development planning in Fujian province. The results showed that among the six, the alternative Ⅱ was preferred because it had relative advantages in terms of allocating water resource in a reasonable way, safeguarding the ecological water use at downstream, and regulating the small scaled hydro-power generations. The indicators and method developed here might benefit incorporating the TLOL environmental management into EIAs of watershed development planning, facilitating communications between planning and evaluating processes, and improving the efficiency of assessment.