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, Y; Zhu, B; Yu, GR; Chen, WL; He, NP; Wang, T; Miao, CY
2014
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
Volume511Pages:692-702
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.
SubtypeJournal
KeywordNitrogen Phosphorus Carbon Coupling Stoichiometry Watershed
Subject AreaEngineering ; Geology ; Water Resources
WOS Subject ExtendedEngineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS KeywordPHOSPHORUS TRANSPORT ; HILLSLOPE CROPLAND ; ELEMENTAL STOICHIOMETRY ; AGRICULTURAL CATCHMENT ; SEMIARID ECOSYSTEMS ; PARTICULATE PHASES ; MEDITERRANEAN SEA ; ORGANIC-CARBON ; LAND-USE ; NITROGEN
Indexed BySCI
Language英语
WOS IDWOS:000335274900061
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44553
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Gao, Y,Zhu, B,Yu, GR,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, Y.,Zhu, B.,Yu, GR.,Chen, WL.,He, NP.,...&Miao, CY.(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, Y,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.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gao, Y]'s Articles
[Zhu, B]'s Articles
[Yu, GR]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gao, Y]'s Articles
[Zhu, B]'s Articles
[Yu, GR]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gao, Y]'s Articles
[Zhu, B]'s Articles
[Yu, GR]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.