The hydrogen and oxygen isotopic compositions of precipitation in a forested watershed of the South Qinling Mts., China

doi:10.1007/s11356-017-0996-9

	The hydrogen and oxygen isotopic compositions of precipitation in a forested watershed of the South Qinling Mts., China
	Bu, Hongmei 1; Song, Xianfang 1; Xia, Jun 2
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2018-03-01
卷号	25 期号:7 页码:6720-6728
关键词	Forested watershed Precipitation Stable isotopes Deuteriumexcess Meteoric water line Meteorological factors
ISSN号	0944-1344
DOI	10.1007/s11356-017-0996-9
通讯作者	Bu, Hongmei(buhm2004@163.com)
英文摘要	The stable isotopic compositions (delta D and delta O-18) of precipitation were firstly investigated from May 2012 to November 2013 in the Jinshui River basin of the South Qinling Mts., China. The local meteoric water lines (LMWLs) based on all daily and monthly precipitation-weighted data were defined as delta D = 8.32 delta O-18 + 12.57 (r (2) = 0.957, n = 47, p < 0.001) and delta D = 8.11 delta O-18 + 11.59 (r (2) = 0.946, n = 15, p < 0.001), respectively. The fluctuations of daily deuterium excess (d-excess) values indicated the mixing moisture sources from the monsoon circulation during the rainy season and the local moisture recycling during the dry season in the river basin. The monthly precipitation-weighted values of d-excess confirmed the moisture sources and determined the temporal variations in moisture supply for the river basin. The precipitation amount and temperature effects were found to be significant, with amount gradient of - 0.06 parts per thousand/mm for daily delta O-18 variability and temperature gradients of - 1.51 and - 0.44 parts per thousand/degrees C for daily delta D and d-excess variability, respectively. However, the isotopes of local precipitation during precipitation events were almost unaffected by relative humidity due to overwhelming recycled moisture at relative humidity > 85%. The results of this research provide an effective method for tracing the local water hydrologic cycle in the South Qinling Mts., China.
资助项目	National Natural Science Foundation of China[41103069] ; China Scholarship Council[201404910228]
WOS关键词	DELTA-D ; ASIA ; EVAPORATION ; DEUTERIUM ; EXCHANGE ; BASIN ; CYCLE ; RIVER
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000426571000056
资助机构	National Natural Science Foundation of China ; China Scholarship Council
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/57210]
专题	中国科学院地理科学与资源研究所
通讯作者	Bu, Hongmei
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Datun Rd,A 11, Beijing 100101, Peoples R China 2.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Bu, Hongmei,Song, Xianfang,Xia, Jun. The hydrogen and oxygen isotopic compositions of precipitation in a forested watershed of the South Qinling Mts., China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2018,25(7):6720-6728.
APA	Bu, Hongmei,Song, Xianfang,&Xia, Jun.(2018).The hydrogen and oxygen isotopic compositions of precipitation in a forested watershed of the South Qinling Mts., China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,25(7),6720-6728.
MLA	Bu, Hongmei,et al."The hydrogen and oxygen isotopic compositions of precipitation in a forested watershed of the South Qinling Mts., China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 25.7(2018):6720-6728.