Dated deposition couplets link catchment erosion flux with storm discharge on the Chinese Loess Plat

• 作者: Zhangdong Jin Xiaqing Wang Xinbao Zhang
• 来源期刊: 地球化学学报(英文）
• 关键词: Landslide-dammed reservoir on the CLP Deposition couplet XRF core scanning 137Cs activity Erosion flux
• 年，卷（期）: 2017,（3）
• 页码范围: 548-551
• 页数: 3页
• 语种: 英文
• DOI: 10.1007/s11631-017-0233-8

摘要

Tracing erosion flux within a single catchment is one of the major targets for the Earth's Critical Zone science. The sedimentary succession in landslide-dammed reservoirs within the Chinese Loess Plateau (CLP) serves as a valuable archive of past erosion history. Deposition couplets and annual freeze-thaw layers were firstly identified for the sedimentary succession of the Jingbian reservoir on the northern CLP with high-resolution XRF core scanning. The deposition couplets in the reservoir since 1963 A.D. were further dated with 137Cs activity. We found consistent one-to-one correspondence between couplet specific sediment yield and storm intensity. The reconstructed soil erosion history highlights the control of storm intensity and frequency on loess erosion on the northern CLP in the past hundreds of years.