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The hydrogen and oxygen isotopic compositions of precipitation in a forested watershed of the South Qinling Mts., China
Bu, Hongmei1; Song, Xianfang1; Xia, Jun2
2018-03-01
Source PublicationENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
Volume25Issue:7Pages:6720-6728
Corresponding AuthorBu, Hongmei(buhm2004@163.com)
AbstractThe 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.
KeywordForested watershed Precipitation Stable isotopes Deuteriumexcess Meteoric water line Meteorological factors
DOI10.1007/s11356-017-0996-9
WOS KeywordDELTA-D ; ASIA ; EVAPORATION ; DEUTERIUM ; EXCHANGE ; BASIN ; CYCLE ; RIVER
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41103069] ; China Scholarship Council[201404910228]
Funding OrganizationNational Natural Science Foundation of China ; China Scholarship Council
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000426571000056
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57211
Collection中国科学院地理科学与资源研究所
Corresponding AuthorBu, Hongmei
Affiliation1.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
Recommended Citation
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.
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