黄河源区滨河植被覆盖度高、地下根系发达的区域，普遍有稳定发育的弯曲河流。滨河植被的良好发育对抵抗水流冲刷、减少河岸坍塌、提高河岸稳定性、维护和恢复水体生态健康具有重要的作用。为了定量化研究弯曲河流滨河植被对保护河岸的作用，本项目拟在黄河源区南木措曲和泽曲选择典型弯曲河段进行试验研究。通过开展野外布点观测试验、植被样方试验、原位剪切试验和原位拉拔等试验，量化分析滨河植被根系增强河岸抗剪强度、加固河岸、减少凹岸坍塌尺寸和频率、限制河道变迁等方面的作用，为黄河源区河流生态保护和植被恢复提供科学依据。

The stable meandering rivers often can be seen in the areas with high riparian vegetation coverage and developed root system in the source region of the Yellow River. The riparian vegetation grow well can resist current scour, decrease bank failure, increase bank stability, maintain and recover the ecological health of water body. In order to make a quantitative study about the effect of protecting river bank by riparian vegetation in the meandering rivers, some experimental studies will be carried out at the typical meandering reach of Nanmucuo river and Zeku river belonging to the source region of the Yellow River. The field experiment of stationing and measuring, quadrat survey procedure of riparian vegetation, in situ shear test of soil root composite and field situ pull-out test are all planed to conduct in the subject research. The main aim is to make a quantitative analysis of the effect of root system reinforce the shear strength of stream bank,armoring the bank, reducing the size and frequence of slump block and the limitation of channel migration etc. By these studies, we can provide scientific evidences for the river ecological protection and vegetation restoration in the source region of the Yellow River.