论文部分内容阅读
美国农业部设在密西西比州牛津的泥沙实验室是美国泥沙研究唯一的专门机构.这里,美国农业部的科学家与密西西比大学和密西西比州州立大学合作,研究密西西比河下游流域的南方黄土丘陵地区和美国其它部分的侵蚀和泥沙问题.泥沙包括土壤物质的剥离、挟带、转运和沉积.泥沙的物理、化学性质也包含在内.在雨滴击溅下和受流水影响的土壤,几乎全部会受到侵蚀.泥沙沉积的后果造成了河床淤塞,非常洪水溢堤引起泛滥,航道需加疏通,以及水库库容损失等许多问题.
US Department of Agriculture Sediment Laboratory in Oxford, Mississippi is the sole specialized agency for sediment research in the United States where scientists from the United States Department of Agriculture worked with the University of Mississippi and the Mississippi State University to study southern loess hilly areas in the lower Mississippi River basin And other parts of the United States Erosion and sediment problems Sediment includes stripping, entrainment, transport and deposition of soil material Physical and chemical properties of sediment are also included In raindrops and soils affected by flowing water, Almost all will be eroded, the consequences of sediment deposition causing siltation of the riverbed, flooding caused by very flood embankments, diversion of waterways and loss of reservoir storage capacity.