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Chinese Academy of Sciences Institutional Repositories Grid
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  2. 成都山地灾害与环境研究所
  3. 中国科学院水利部成都山地灾害与环境研究所
  4. 山地表生过程与生态调控重点实验室
Use of 137Cs and 210Pbex peaks produced by events in the catchment for dating sediments in the Jiulongdian Reservoir, Cuxiong, Yunnan Province,China

文献类型：会议论文

作者Xinbao Zhang; Anbang Wen; Yi Long; Xiubin He; Dongchun Yan
出版日期2012
会议名称IAHS-ICCE 2010 International Symposium on" Sediment dynamics for a changing future"
会议日期2012.10.11-15
会议地点中国成都
关键词137Cs 210pbex sediment core forest fire soil erosion
页码378-384
通讯作者Xinbao Zhang
英文摘要 393-cm long sediment core was collected from the Jiulongdian Reservoir in 2004. In addition to the expected 1963 137Cs peak at a depth of 231-237 cm, there was an unusual 137Cs and 210Pb ex peak at a depth of 15-21 cm. The 137Cs and 210Pbex Peak is related to a forest fire occurring in the spring of 1998 and can be used for sediment dating. The 210Pb ex peak at a depth of 331-337 cm reflects the surface horizon of the original soil beneath the reservoir, which has been buried by the reservoir deposits since the reservoir was built in 1958. Based on the storage volume vs depth relationship for the reservoir, the amounts of sediment deposited during the periods 1959-1962, 1963-1997 and 1998-2003 were estimated to be 249.48 × 104t, 262.78 × 104t and 30.94 × 104t, respectively. The corresponding specific sediment yields for the three periods are estimated to be 2421.2 t km year-1, 291.5 t km-2 year-1 and 200.2 t km-2 · year, respectively. The highest specific sediment yields were associated with deforestation during the "Great Leap Forward" of 1958-1959. However, the severe erosion resulting from deforestation rapidly declined when the natural vegetation re-established itself after deforestation ceased.
收录类别EI
会议主办者国际大陆侵蚀委员会（ICCE） ; 中国科学院水利部成都山地所
会议录IAHS Publication 356
语种英语
源URL[http://192.168.143.20:8080/handle/131551/4776]  
专题成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
科技与合作处
推荐引用方式
GB/T 7714		 Xinbao Zhang,Anbang Wen,Yi Long,et al. Use of 137Cs and 210Pbex peaks produced by events in the catchment for dating sediments in the Jiulongdian Reservoir, Cuxiong, Yunnan Province,China[C]. 见:IAHS-ICCE 2010 International Symposium on" Sediment dynamics for a changing future". 中国成都. 2012.10.11-15.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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