IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Coupled effects of biogeochemical and hydrological processes on C, N, and P export during extreme rainfall events in a purple soil watershed in southwestern China
Gao, Yang1; Zhu, Bo2; Yu, Guirui1; Chen, Weiliang3; He, Nianpeng1; Wang, Tao2; Miao, Chiyuan4
Corresponding AuthorGao, Yang ; Gao, Yang
2014-04-16
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
Volume511Pages:692-702
SubtypeArticle
AbstractAs global warming and extreme weather events increase and intensify across the globe, it becomes ever more urgent to study and understand the effects of extreme rainfall events on carbon (C), nitrogen (N), and phosphorus (P) export from terrestrial to riverine ecosystems. There is still much to learn regarding C, N, and P non-point source discharge that results from extremely heavy rainfall as well as their effects on downstream ecosystems. This study aimed to shed light on C, N, and P biogeochemical and hydrological coupling processes. Long-term and short-term water composition monitoring research was carried out within a purple soil watershed in China's Sichuan Province. This study captured both base flow from long-term observations and dynamic runoff under extreme rainfall events that took place during the 2012 rainy season. Dissolved total nitrogen (DTN) was the largest percentage of total nitrogen (TN) in storm runoff. DTN exceeded particulate nitrogen (PN), which itself exceeded dissolved organic nitrogen (DON). Under site conditions, particulate phosphorus (PP) formed the largest constituent of total phosphorus (TP) followed by dissolved total phosphorus (DTP) and dissolved organic phosphorus (DOP). Furthermore, results showed that C, N, and P loads increased sharply in response to heavy rainfall. Although P abundance in purple soils is limited, it was nevertheless shown that C:N:P ratios measured during rainstorms corresponded much more closely to the Redfield ratio than to ratios measured in base flows. This adds to the evidence that suggests that increased storm runoff will increase eutrophication likelihood in ecosystems further downstream. (C) 2014 Elsevier B.V. All rights reserved.
KeywordNitrogen Phosphorus Carbon Coupling Stoichiometry Watershed
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.jhydrol.2014.02.005
WOS Subject ExtendedEngineering ; Geology ; Water Resources
Indexed BySCI
WOS KeywordPHOSPHORUS TRANSPORT ; HILLSLOPE CROPLAND ; ELEMENTAL STOICHIOMETRY ; AGRICULTURAL CATCHMENT ; SEMIARID ECOSYSTEMS ; PARTICULATE PHASES ; MEDITERRANEAN SEA ; ORGANIC-CARBON ; LAND-USE ; NITROGEN
Language英语
WOS SubjectEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000335274900061
Funding OrganizationNational Nature Science Foundation of China(31200404 ; Program for "Bingwei" Excellent Talents in Institute of Geographic Sciences and Natural Resources Research, CAS ; Key Laboratory of Mountain Surface Processes and Ecological Regulation open fund ; Institute of Mountain Hazards and Environment ; Chinese Academy of Sciences(Y2R20050DD) ; 31290223 ; 31290221)
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9974
Collection山地表生过程与生态调控重点实验室
Affiliation1.Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Life Sci, Fuzhou 350002, Peoples R China
4.Beijing Normal Univ, Coll Global Change & Earth Syst Sci, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 10085, Peoples R China
Recommended Citation
GB/T 7714
Gao, Yang,Zhu, Bo,Yu, Guirui,et al. Coupled effects of biogeochemical and hydrological processes on C, N, and P export during extreme rainfall events in a purple soil watershed in southwestern China[J]. JOURNAL OF HYDROLOGY,2014,511:692-702.
APA Gao, Yang.,Zhu, Bo.,Yu, Guirui.,Chen, Weiliang.,He, Nianpeng.,...&Miao, Chiyuan.(2014).Coupled effects of biogeochemical and hydrological processes on C, N, and P export during extreme rainfall events in a purple soil watershed in southwestern China.JOURNAL OF HYDROLOGY,511,692-702.
MLA Gao, Yang,et al."Coupled effects of biogeochemical and hydrological processes on C, N, and P export during extreme rainfall events in a purple soil watershed in southwestern China".JOURNAL OF HYDROLOGY 511(2014):692-702.
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