为科学合理地评价生态修复边坡水土保持效果,选取8个与评价目标紧密相关的评价指标建立了生态修复边坡水土保持效果评价体系。首先采用层次分析法确定评价指标体系中各指标的权重,然后分别选择向家坝水电站4个不同修复措施的边坡,通过综合指数模型计算得到边坡水土保持效果的综合评价值。结果表明,各个边坡生态修复工程的水土保持效果综合评价值为植被混凝土(0.923 4)〉厚层基材(0.880 3)〉框格梁植草(0.816 8)〉草种撒播(0.090 6)。评价结果与边坡样地实际情况一致,说明所构建的指标体系可以较好应用于生态修复边坡水土保持效果的评价,可为以后水土保持效果的定量分析提供可行的方法。
In order to scientifically and reasonably evaluate the soil and water conservation effect of the ecological restoration slope,the evaluation system of water and soil conservation effect of ecological restoration slope was established by selecting 8evaluating index closely related to evaluation objective. Firstly,using the analytic hierarchy process to determine the weight of each index of the system,then choosing slopes with 4 different restoration methods in Xiangjiaba hydropower station to measure the comprehensive evaluation values of the water and soil conservation effect through comprehensive index model.Results showed that,the comprehensive evaluation value of the water and soil conservation effect of each slope ecological restoration project was Vegetation-growing concrete base material(0.923 4)Thick layer base material(0.880 3)Planting grass in the frame beams(0.816 8)Sow grass seed(0.090 6). The evaluation results were consistent with the actual conditions of slope plot, which indicated the constructed system can be better applied to the evaluation of the water and soil conservation effect of ecological restoration slope,and provided a feasible method for the further quantification analysis of water and soil conservation effect.