柏叶口水库工程区水土保持及生态修复

Soil and Water Conservation and Ecological Restoration in Construction Area of Baiyekou Reservoir Project

为防止柏叶口水库工程区水土流失,减小工程建设对生态的破坏,使因工程施工所破坏的生态系统得以尽快恢复,对柏叶口水库建设过程中水库淹没区、枢纽区、料场区等不同功能区可能增加的水土流失量及其危害进行了分析和预测。结果表明,工程施工扰动,地貌土壤侵蚀模数增大是新增水土流失的主要原因。针对各功能区水土流失的基本特征提出了以工程防治和生态修复相结合,充分发挥生态自我修复能力,加快植被恢复的水土保持措施。在水库不同的功能区采取相应的工程措施或生态措施。生态恢复与培育的主要措施是栽植油松、落叶松、乔木或刺槐,其间散播苜蓿草种。

In order to prevent loss of soil and water,to avoid further damage of the ecological environment,and to expedite the restoration of the ecological system in Baiyekou reservoir project construction area,this study analyzed and predicted the risk and quantity of soil and water loss during construction for the submerged area,hydraulic stucture area and storage area during construction.Resuults show that disturbance from construction was the main reason for soil and water loss,leading to the increase of soil erosion mode.Based on the characteristics of soil and water loss in different function areas,soil and water conservation measures combining engineering and ecological restoration were recommended to stimulate self-repair capability for ecological system and enhance vegetation restoration.Plantation of tree species such as Pinus tabulaeformis,larch,and robinia with alfalfa in between are appropriate approaches for the area.