These show that vegetation dam can reduce starting drag force and starting frequency of sediment in upper reaches. And can make athletic sedimentdeposit.
说明植物坝可以减小泥沙的起动拖曳力，降低上游泥沙的起动频率，并能使运动的泥沙在坝上游沉积下来。
2
Placer tin deposit in xupu occurs in alluvial sediment of quatemary system and cassiterite chiefly concentrates at the bottom of gravel layers.
溆浦砂锡矿床赋存在第四系冲积层中锡石主要富集在底部砂砾石层。
3
Coming sediment mainly deposit in the submerged delta and Hangzhou Bay, and there is about 70% of sediment that go through Datong section into this region.