三峡大坝上游偏岩子消落带生态袋护坡方案的实践应用

Practice and Application of Ecological Bag Slope Protection Scheme in the Pianyanzi Riparianzone of the Three Gorges Dam Upstream

消落带是三峡库区生态环境敏感区之一,是保护库区水生态、水环境安全的最后一道生态屏障。库区消落带形成以后,大部分的原生植物无法承受这种长时间高深度的反季节水淹,大量原生植物消失,失去植被保护的消落带水土流失严重,景观效果差,更多的污染物进入水体。三峡大坝上游偏岩子生态修复项目通过在不同的地形地貌区域采用不同的生态袋修复方案,在偏岩子消落带建立了自稳定机制的植被群落,实现了消落带的生态修复,降低消落带的水土流失,加强库岸的边坡稳定,提高岸坡的景观效果。该项目探索出三峡库区消落带生态修复的新思路,这对维护三峡库区生态平衡具有重要意义。

The riparianzone is one of the sensitive areas of the ecological environment in the Three Gorges Reservoir Area,and the last ecological barrier to protect the water ecology and water environment security in the reservoir area.After the formation of the riparianzone in the reservoir area,most of the native plants can not withstand the long and deep antiseason flooding,and a large number of native plants disappear,the water and soil loss in the riparianzone without vegetation protection is serious,the landscape effect is poor,and more pollutants enter the water body.By adopting different ecological bag restoration schemes in different topographic and geomorphic areas,the Pianyanzi Ecological Restoration Project of Three Gorges Dam Upstream has established a self-stabilizing mechanism of vegetation communities in the Pianyanzi Riparianzone,achieving ecological restoration of the riparianzone,reducing water and soil loss in the riparianzone,strengthening the stability of the bank slope,and improving the landscape effect of the bank slope.The project explores a new idea of ecological restoration of riparianzone in the Three Gorges Reservoir Area,which is of great significance to maintain the ecological balance of the Three Gorges Reservoir Area.