基于能值分析的跨流域引调水工程生态效益计算

Ecological benefit calculation of inter-basin water diversion projects based on energy analysis

跨流域引调水工程是解决水资源时空分布不均、社会水需求不平衡的最有效的措施。根据跨流域引调水工程涉及不同流域、功能综合、结构复杂、相互交叉的特点,采用生态与经济并重的能值分析法对跨流域引调水工程的生态效益进行量化分析,并以浙东引水工程为例,具体计算分析了2017年浙东引水工程给工程沿线地区生态环境等方面带来的效益。计算结果表明:该量化方法能够较好地应用于实际引调水工程生态效益计算,且结果较以往常用的等效替代方法更为合理,贴近实际。

The construction of inter-basin water diversion projects is one of the most effective measures targeting the uneven spatial and temporal distribution of water resources and the imbalance of social water demands.An inter-basin water diversion project involves in multiple different basins,it has complicated structures with multi-functional purposes,and always intersects with local reservoirs,lakes,channels or other water transport systems.Based on these characteristics,we adopted the energy analysis method,which considers the ecological value as vital as economic value,to quantitatively analyze the ecological benefits of East Zhejiang Water Diversion Project for the ecological environment of the areas along the route.The results show that this quantification method can be applied to the calculation of ecological benefits of actual diversion projects,and its results are more accurate and closer to the actual situation than those of the commonly used equivalent substitution method in the past.