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
文献类型：期刊论文
| 作者 | Gao, Yang1; Zhu, Bo2 ; Yu, Guirui1; Chen, Weiliang3; He, Nianpeng1; Wang, Tao2; Miao, Chiyuan4
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| 刊名 | JOURNAL OF HYDROLOGY
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| 出版日期 | 2014-04-16 |
| 卷号 | 511页码:692-702 |
| 关键词 | Nitrogen Phosphorus Carbon Coupling Stoichiometry Watershed |
| ISSN号 | 0022-1694 |
| 通讯作者 | Gao, Yang ; Gao, Yang |
| 英文摘要 | As 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. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources |
| 研究领域[WOS] | Engineering ; Geology ; Water Resources |
| 关键词[WOS] | PHOSPHORUS TRANSPORT ; HILLSLOPE CROPLAND ; ELEMENTAL STOICHIOMETRY ; AGRICULTURAL CATCHMENT ; SEMIARID ECOSYSTEMS ; PARTICULATE PHASES ; MEDITERRANEAN SEA ; ORGANIC-CARBON ; LAND-USE ; NITROGEN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000335274900061 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/9974]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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