Plant residual is an effective way in retarding soil wind erosion in the agro-pastoral ecotone. However, few studies have determined the effects of sand plant residual on wind erosion resistance. Based on field surveys, the influences of Salix residual biomass of 200 g m-2, 400 g m-2, 600 g m-2 and 800 g m-2, soil incorporated with residual thickness of 0.5 cm, 1.0 cm and 2.0 cm, as well as typical proportion of residual branch and leaves (2:1, 1:1 and 1:2) on wind erosion resistance were investigated using a simulated wind tunnel. The results showed that, (1) soil loss amount ranged from 1.56 to 40.8 kg m-2 as Salix residual biomass decreased from 800 to 0 g m-2, with a critical residual biomass value of 400 g m-2.(2) As the thickness of soil incorporated residual increased, soil loss amount reduced rapidly, especially for 0-9cm above the surface accounts for 84.6% of the total. (3) Salix branch residual is more important in resisting soil wind erosion as compared with its leaves. This kind of study may provide theoretical explanations for the optimal reconstruction of sandy vegetation in the northern wind-sand regions.

中文翻译：

---

农牧交错带柳残抗风蚀模拟试验

植物残留是农牧交错带减缓土壤风蚀的有效途径。然而，很少有研究确定沙植物残留对抗风蚀能力的影响。根据实地调查，柳柳残留生物量200 g m-2、400 g m-2、600 g m-2和800 g m-2、残留厚度0.5 cm、1.0 cm和2.0 cm土壤结合的影响，以及使用模拟风洞研究了残余枝叶的典型比例（2：1、1：1和1：2）对抗风蚀性的影响。结果表明：（1）当柳柳残留生物量从800降至0 g m-2时，土壤流失量为1.56～40.8 kg m-2，临界残留生物量值为400 g m-2。（2）随着土壤掺入残渣厚度的增加，土壤流失量迅速减少，尤其是表面以上0-9cm的占总数的84.6%。(3)柳枝残叶比叶片更能抵抗土壤风蚀。此类研究可为北方风沙区沙质植被的优化重建提供理论解释。