水电站植被混凝土边坡生态防护工程基材土壤 肥力隔年变化分析

针对水电站边坡植被混凝土生态防护工程基材土壤主要肥力因子的逐年变化问题，采集了四处植被混凝土生态防护边坡的基材土壤样品，对植被混凝土相邻年份（2008年和2009年）土壤主要肥力因子进行定量测定分析。同时，采用标准综合级别法对该四处的肥力水平进行了理化性质方面的综合性评价。结果表明：除样地2外，在一个年循环周期内，其他样地的植被混凝土基材土壤肥力因子各指标值均呈增强趋势，且各样地相邻年份肥力水平表现为隔年增加。这为植被混凝土肥力可持续演替以及植被长期稳定的生长提供了一个良好的营养水平。

Analysis on variation in alternate years of base material soil fertility for vegetation concrete eco-slope protection of hydropower station

Aiming at the variation of the main soil fertility factors in alternate years of the base material for vegetation concrete eco slope protection， the base material soil samples are taken from four sample plots， and then the analysis of quantitative determination is made on the main soil fertility factors of the vegetation concrete in the alternate years（2008 and 2009）.Simultaneously， a comprehensive evaluation of the physicochemical properties is made on the fertility levels of the four sample plots based on the standard integrated grade method.The result shows that except the sample plot No.2， all the index values of the soil fertility of the vegetation concrete base material from the other sample plots exhibit increasing trends within a cycle of one year， moreover， the fertility levels in adjacent years of all these sample plots present the increases in alternate years; which provide a better nutrient level for the sustainable succession of the soil fertility of the vegetation concrete and the long term stable growth of vegetation.