Through detailed field investigations,a complete and representative sedimentary profile was discovered in the upper reaches of the Yinghe River in the Huaihe River Basin.Macroscopic stratification and high-resolution sampling were conducted at 2 cm inter-vals in situ;the samples were brought back to the laboratory for analysis.End-Member Modeling Analysis was used to analyze the prov-enance of the sedimentary profile.The results indicate that the source of loess in this area was different than that of typical loess in the Loess Plateau,with a significant proportion of sediment deposited by the influence of the northeast wind near the source area.Accord-ing to End-Member analysis,the sediments were mainly composed of the dust material transported from the northwest desert under the influence of the East Asian winter monsoon,and sediment from the Yellow River transported nearby under the action of the Northeast wind.The sedimentary dynamics vary noticeably over different time periods,reflecting the response of regional monsoon climate to global climate change since the Holocene.This study quantitatively analyzes the characteristics of sediment provenance in the local riv-er valley deposits of the upper Ying River in the Huai River Basin,providing important scientific insights into how the monsoon climate has influenced the surface processes since the Holocene.
Huaihe river basinupper reaches of the Yinghe Riverloess paleosolholoceneprovenance analysis
NETL
NSTL
万方数据
