Research on the Improvement of Anti-scouring Ability of River Side Slope by Vegetation Slope Protection
In order to enhance the anti-scouring ability of the river side slope,this paper carries out the scouring test by setting the plant side slopes with different planting ratios of alfalfa and ryegrass,and analyzes the evaporation rate of the plant side slope soil and the influence of plants on the anti-scouring ability of the side slope soil.The re-sults show that the influence of vegetation growth on soil evaporation rate can be divided into the initial develop-ment stage of plants,the rapid development stage of plants and the mature and stable stage of plants,the maximum evaporation rate of soil in the plant growth period gradual-ly decreases with the increase of alfalfa planting ratio;the strongest anti-scouring ability of the side slope is group B,followed by group E,group C and group D are basically the same,and group A is the worst,so the mixed planting of 70%of alfalfa and 30%of ryegrass has the best slope protection effect;at the same time,the proportion of alfalfa planting is higher,and the water evaporation rate of side slope soil is lower,which reduces the artificial watering amount in the early stage of planting and reduces the cost of planting and maintenance.
river side slopeanti-scouringplant side slopeevaporation rate
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