长江深水航道整治生态护岸工程实施效果综合评估

Comprehensive evaluation on implement effect of ecological riverbank project in deep waterway regulation of Yangtze River

生态护岸的建设已成为当前内河航道整治工程的发展趋势,同时也是实现河岸带生物多样性保护和河流生态修复的重要实现途径。以长江深水航道整治生态护岸工程为例,基于层次分析法选取结构稳定性、材料生态性、工程布置合理性、工程经济性、生态系统服务功能5类共计16个指标构建了内河航道生态护岸工程实施效果综合评估指标体系,并采用护岸工程生态符合性指数(ECIR)对立体网状栅格护岸、格状石笼压载植生垫护岸和传统抛石护岸的实施效果进行评价。结果表明:格状石笼压载植生垫护岸实施效果最好,立体网状栅格护岸次之,传统抛石护岸相对较差。

The construction of ecological riverbank is a development trend in inland waterway regulation at home and abroad, and it is also an important way to achieve riparian biodiversity protection and riverine ecosystem restoration.In this study, the ecological riverbank construction in the deep waterway regulation for the Yangtze River was selected as an example.Based on the analytic hierarchy process, a total of 16 indicators belonging to the five categories of structural stability, material ecology, rationality of the engineering layout, engineering economy, and ecological system service function, were preformed to construct a comprehensive evaluation index system on implement effect of the ecological riverbank in inland waterway.By using the ecological compliance index of riverbank(ECIR), the implement effect of the mesh grid riverbank, lattice gabion ballasted vegetation-mat riverbank, and traditional riprap riverbank were evaluated.The results showed that the implement effect of lattice gabion ballasted vegetation-mat riverbank was the best, followed by the mesh grid riverbank, and the traditional riprap riverbank was relatively poor.