DOI: 10.1016/j.gloplacha.2016.06.004
论文题名: Human impact on erosion patterns and sediment transport in the Yangtze River
作者: Sun X. ; Li C. ; Kuiper K.F. ; Zhang Z. ; Gao J. ; Wijbrans J.R.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2016
卷: 143 起始页码: 88
结束页码: 99
语种: 英语
英文关键词: 40Ar/39Ar muscovite dating
; Erosion
; Human activities
; Provenance
; Yangtze river
Scopus关键词: Catchments
; Cultivation
; Deforestation
; Erosion
; Mica
; Reservoirs (water)
; Sediment transport
; Sediments
; Suspended sediments
; <sup>40</sup>Ar/<sup>39</sup>Ar muscovite dating
; Erosional process
; Gauging stations
; Human activities
; Provenance
; Suspended sediment loads
; Yangtze River
; Yangtze River basin
; Rivers
英文摘要: Sediment load in rivers is an indicator of erosional processes in the upstream river catchments. Understanding the origin and composition of the sediment load can help to assess the influence of natural processes and human activities on erosion. Tectonic uplift, precipitation and run-off, hill slopes and vegetation can influence erosion in natural systems. Agriculture and deforestation are expected to increase the sediment yield, but dams and reservoirs can trap much of this sediment before it reaches the ocean. Here, we use major element composition and 40Ar/39Ar ages of detrital muscovites to constrain the sediment contribution of various tributaries to sedimentation in the Yangtze delta. The sediment contribution calculated from muscovite data was compared with that estimated from current sediment load data from gauging stations. Muscovite data show that the main contributor to the Yangtze delta sands is the Min River, while the current sediment load suggests that the Jinsha and Jialing rivers are the most important current contributors to delta sediments. We suggest that this difference reflects an "old" and "young" erosion pattern, respectively as medium grained muscovite could be transported much slower than suspended sediment load in the complex river-lake systems of the Yangtze River basin. These two different erosion patterns likely reflect enhanced human activity (deforestation, cultivation, and mining) that increasingly overwhelmed long-time natural factors controls on erosion since ~1900 cal years B.P. © 2016 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84974717591&doi=10.1016%2fj.gloplacha.2016.06.004&partnerID=40&md5=d10d70eff292686647d8e6b97decbd75
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11650
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Cluster Geology and Geochemistry, VU University Amsterdam, De Boelelaan 1085, HV Amsterdam, Netherlands
Recommended Citation:
Sun X.,Li C.,Kuiper K.F.,et al. Human impact on erosion patterns and sediment transport in the Yangtze River[J]. Global and Planetary Change,2016-01-01,143.