河湖水系连通影响评价指标体系研究Ⅱ——“引江济太”调水影响评价

Study on the impact evaluation indicator system of River and Lake System Interconnection Ⅱ: impact evaluation of “Project of Water Diversion From the Yangtze River to Taihu Lake”

"引江济太"调水是通过河湖水系连通改善太湖流域水资源配置、修复太湖流域水环境、保障太湖流域用水安全的典型案例,调水的影响为社会广泛关注。本文以"引江济太"调水为例,对所建立的"河湖水系连通影响评价指标体系"及评价方法进行了应用,对其适用性进行了检验。结果表明,指标体系具有较好的适应性,基本能反映和评价河湖水系连通的主要影响;"引江济太"调水的影响较为正面,影响主要表现在改善城镇供水保证率、补给深层地下水、改善水质和景观等方面;由于"引江济太"调水仅为长江和太湖流域之间连通的一部分,调水对经济、社会、生态环境的综合影响总的来说较小。

＂Project of Water Diversion From the Yangtze River to Taihu Lake＂（the Project） is a typical case of improving water resources allocation, restoring water environment and ensuring water safety of the Taihu Basin by the method of river and lake system interconnection, and the effects of the water diversion have gained widely attention. In this paper, we applied the impact evaluation indicator system and the eval- uation method on the Project and checked the applicability of the indicator system. The results indicated that the indicator system had good applicability and could reflect and evaluate those major impacts of river and lake system interconnection. The impacts of the Project were overall positive, mainly expressing in those aspects like improving urban water supply guarantee rate, recharging deep groundwater, improving wa- ter quality and landscape and so on, because that the Project just connected part of the Yangtze River and the Taihu Basin, the comprehensive impacts of water diversion on economy, society and ecological environ- ment were relatively small.