Evaluation of soil erosion and ecological rehabilitation in Loess Plateau region in Northwest China using plutonium isotopes

doi:10.1016/j.still.2019.04.004

	Evaluation of soil erosion and ecological rehabilitation in Loess Plateau region in Northwest China using plutonium isotopes
	Zhang, Weichao 1,3; Xing, Shan 1,6; Hou, Xiaolin 1,2,4,5
刊名	SOIL & TILLAGE RESEARCH
	2019-08-01
卷号	191 页码:162-170
关键词	(239,240)pu Soil erosion Ecological rehabilitation ICP-MS/MS Loess Plateau
ISSN号	0167-1987
DOI	10.1016/j.still.2019.04.004
通讯作者	Hou, Xiaolin(xiho@dtu.dk)
英文摘要	Soil erosion is a critical threat to the agriculture and ecosystem in the Chinese Loess Plateau area. Ecological rehabilitation has been applied in large area for reduction of the soil erosion. Six soil depth profiles were collected from Nanxiaohegou watershed in the Loess Plateau in northwest China and analyzed for the activity concentrations of plutonium isotopes. The measured Pu-240/Pu-239 atomic ratios in all these samples (0.186 +/- 0.017) showed that the global fallout was the dominant source of plutonium in this region. An exponential decline of (PU)-P-239,240 activity concentrations with depth was observed in most of soil profiles. The total inventory of (PU)-P-239,240 in the reference site was calculated to be 110 Bq/m(2), agreeing well with the reported total fallout value in this latitude. The soil erosion rates were estimated by comparison with the reference site to be 538-941 t/km(2)/yr in the most of sites. While an excessive inventory of (PU)-P-239,240 (186 Bq/m(2)) compared to the reference site was observed in one site in the base area, indicating a significant accumulation of soil occurred in this area. The soil erosion depths were estimated to be 2.4-4.6 cm in most of sites during 1963-2016, which can be classified as minor erosion. Compared with the erosion rates in the Nanxiaohegou watershed in 1963-2012 which was estimated by other methods, it is suggested that the natural grass is better for long-term ecological restoration, especially in slope area.
资助项目	National Natural Science Foundation of China[11605206] ; National Natural Science Foundation of China[11875261] ; National Natural Science Foundation of China[41603125] ; Ministry of Science and Technology of China[2015FY110800] ; National Research Program for Key Issues in Air Pollution Control[DQGG0105-02] ; Chinese Academy of Sciences[132B61KYSB20180003]
WOS关键词	ICP-MS ; CS-137 ; PU-239 ; RATES ; ERODIBILITY ; ENVIRONMENT ; DEPOSITION ; SEDIMENTS ; ACCIDENT ; RATIOS
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000486976900017
资助机构	National Natural Science Foundation of China ; Ministry of Science and Technology of China ; National Research Program for Key Issues in Air Pollution Control ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13351]
专题	地球环境研究所_加速器质谱中心第四纪科学与全球变化卓越创新中心
通讯作者	Hou, Xiaolin
作者单位	1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian AMS Ctr,Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Shandong, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 5.Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark 6.China Inst Radiat Protect, Taiyuan 030006, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Weichao,Xing, Shan,Hou, Xiaolin. Evaluation of soil erosion and ecological rehabilitation in Loess Plateau region in Northwest China using plutonium isotopes[J]. SOIL & TILLAGE RESEARCH,2019,191:162-170.
APA	Zhang, Weichao,Xing, Shan,&Hou, Xiaolin.(2019).Evaluation of soil erosion and ecological rehabilitation in Loess Plateau region in Northwest China using plutonium isotopes.SOIL & TILLAGE RESEARCH,191,162-170.
MLA	Zhang, Weichao,et al."Evaluation of soil erosion and ecological rehabilitation in Loess Plateau region in Northwest China using plutonium isotopes".SOIL & TILLAGE RESEARCH 191(2019):162-170.