关键词: 起动切应力, 根土复合体, 根系体积密度, 土体干密度, 红柳根系, 塔里木河

Abstract: In order to study the influence of red willow root system on the starting law of soil on the bank of the Tarim River, a starting characteristics test was carried out on the root-soil composites with different vegetation root system volume density and different root distribution patterns. The law of starting shear stress under the influence of vegetation root system was analyzed. The quantitative relationship between the starting shear stress of the riparian soil and the root density of the vegetation, the dry density of the soil under the influence of root system was obtained. The results showed that the soil erosion resistances of different root placement ranks as intersected placed＞vertical placed＞tilt. When the red willow roots cover the river bank soil, the starting shear stress of the soil can be obviously improved.

Key words: starting shear stress, root-soil composite, volume density of root system, soil dry density, red willow root system, Tarim River