不同植被坡面土壤侵蚀特性的研究.pdf

强度条件下,大豆坡面的侵蚀量最大,花生坡面的其次,山芋坡面的侵蚀量最小。而对于三种牧草坡面,红花酢浆草坡面的侵蚀量最大,麦冬坡面的侵蚀量次之, 而草皮马尼拉坡面的侵蚀量最小。 、产流量变化特征、含沙量和侵蚀率变化特征以及侵蚀量,可以得出在实验中所用到的六种植被中,山芋和马尼拉的抗侵蚀能力最强。 关键词:不同植被坡面土壤侵蚀径流量侵蚀量 II Abstract This paper adopts natural ra infall to simulating differe nt vegetation slope surface soil erosion happens development process. On slope surface erosion and sediment process were analyzed, focuses on analyzing slope surface soil erosion process middle discharge, sediment concentration, erosion ra te, analysis the variation characteristics of different vegetation, rainfall intensity f actor on slope surface soil erosion processes influence. Rainfall process changes of sl ope surface erosion form were observed and studied, in order to further improve slope surfac e erosion theory, establishes the soil erosion physical process model provide scien tific basis, but also for the prevention and control of soil and wate r conservation huaihe river dykes rational configuration of soil and water conservation measures, form ulate measures slope, DAMS, effective governance and realize the so il slope provides scientific basis for sustainable utilization of water and soil conservation production practice, have very important theory and production significance. This paper in Anhui Agricultural University agronomy of agricultural experimental bases to gather garden of soybean, peanuts, sweet potato three crops, Manila, dwarf lilyturf, saffl ower sorrel three forages fo r slope vegetation, to the following content is studied : 1. The slope surface runof f production. 2. Different vegetation slope surface runoff duration of the differences. 3. The change rule of runoff rate. 4. The influence of vegetati on on runoff. 5. Slope surface erosion and sediment process. Quantitative analysis of runoff sediment concentration and erosion and sediment yield rate change rule. 6. Vegetation on the influe nce of soil erosion. The main research results are as follows: