Spatial-temporal distribution characteristic and course of sedimentation in the Ningxia-Inner Mongolia reaches of the Yellow River
With water-sediment and section-observation data,the sediment erosion and deposition of Ningxia-Inner Mongolia reaches of the Yellow River since 1960 were calculated by the sediment balance method and the section method.The results from two methods were close and complementary.The erosion and deposition varies in different periods that the sedimentation in the Ningxia-Inner Mongolia reaches has been aggravating since 1987,which mainly concentrated in the flood season and the sediment volume of particle size less than 0.1mm,while particle size more than 0.1mm has decreased.That sedimentation mainly occurred at Sanhuhekou-Toudaoguai reach and Bayangaole-Sanhuhekou reach that river channel sedimentation predominated and cross sectionh has atrophied since 1987.According to the source of water and sediment,the mainstream water and sediment conditions change,especially that from the combination of Longyangxia and Liujiaxia reservoirs,including the decrease of water amount and the flow process during the flood season,is the main cause of the increased deposition in Ningxia-Inner Mongolia reaches of the Yellow River.
Ningxia-Inner Mongolia reachessedimentationspatial-temporal distributioncourse of sedimentationUpstream of Yellow River
国家科技期刊平台
NSTL
万方数据
维普
