Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China

doi:10.1360/04wd0106

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（1985-2004）

	Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China
	Zhang, XB; He, XB; Wen, AB; Walling, DE; Feng, MY; Zou, X
	2004-09
发表期刊	CHINESE SCIENCE BULLETIN
卷号	49 期号:18 页码:1953-1957
文章类型	Article
摘要	Double radionuclide tracers of Cs-137 and Pb-210 were used to investigate sediment sources in the Wujia Gully, a small catchment in the Hilly Sichuam Basin in 2002. Average Cs-137 and Pb-210 concentrations in the source soils of the steep forest slopes, gentle cultivated terraces and bare slopes were 7.15+/-0.40 and 162.01+/-3.86 Bq . kg(-1), 4.01+/-0.31 and 70.96+/-2.65 Bq .kg(-1), and 0 and 15.12+/-1.22 Bq .kg(-1), respectively, while those concentrations in the recently deposited sediments in the reservoir were 3.06+/-0.23 and 72.66+/-1.61 Bq .kg(-1), respectively. By using the mixing model, the relative sediment contributions from steep forest slopes, gentle cultivated terraces and bare slopes (including channel banks) were estimated to be 18%, 46% and 36%, respectively. Cultivated terraces and bare slopes (including channel banks) were the first and the second important sediment sources in catchment. Specific sediment yield in the catchment was 642 t . km(-2) . a(-1) from the deposited sediment volume in the reservoir since 1956. Soil erosion rates for the forest slopes and cultivated terraces, which accounted for 2/3 and 1/3 of the drainage area in the catchment, were estimated to be 173 and 886 t . km(-2) . a(-1), respectively.
关键词	sediment source relative contribution (CS)-C-137 Pb-210 Hilly Sichuan Basin
学科领域	Science & Technology - Other Topics
DOI	10.1360/04wd0106
关键词[WOS]	CULTIVATED LAND ; SOIL-EROSION
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Multidisciplinary Sciences
WOS记录号	WOS:000225416200012
出版者	SCIENCE PRESS
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/11994
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Zhang, XB,He, XB,Wen, AB,et al. Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China[J]. CHINESE SCIENCE BULLETIN,2004,49(18):1953-1957.
APA	Zhang, XB,He, XB,Wen, AB,Walling, DE,Feng, MY,&Zou, X.(2004).Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China.CHINESE SCIENCE BULLETIN,49(18),1953-1957.
MLA	Zhang, XB,et al."Sediment source identification by using Cs-137 and Pb-210 radionuclides in a small catchment of the Hilly Sichuan Basin, China".CHINESE SCIENCE BULLETIN 49.18(2004):1953-1957.