Tracking the fate of deposited nitrogen and its redistribution in a subtropical watershed in China
文献类型：期刊论文
| 作者 | Gao, Yang1,2,3 ; Hao, Zhuo1,2; Han, Ning1,2; Yang, Jun1,2; Tian, Jing1,2; Song, Xianwei1; Wen, Xuefa1,2; He, Nianpeng1,2
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| 刊名 | ECOHYDROLOGY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 12期号:5页码:16 |
| ISSN号 | 1936-0584 |
| 关键词 | N-15 O-18 delta D-2 baseflow N deposition subtropical watershed |
| DOI | 10.1002/eco.2094 |
| 通讯作者 | Gao, Yang(gaoyang@igsnrr.ac.cn) |
| 英文摘要 | Vegetation cover and soil infiltration can result in nitrogen (N) redistribution and associative isotopic fractionation. This study investigated N and its isotopic characteristics from deposition to baseflow under different vegetation canopy cover types in a subtropical watershed in China. Results showed that canopy interception via vegetation cover types exhibited notable dilution effects on reactive nitrogen (N-r) deposition during the rainy season, with the highest maximum value of 287.4%. The range of delta N-15 changed from 3.0 parts per thousand to 11.9 parts per thousand in throughfall, which may have resulted from an increase in N taken up by vegetation and particles washed away from plant leaves during rainfall events. Throughfall, soil water, precipitation, and rainfall run-off were the sources of D and O-18-H2O in baseflow river water, wherein the rainwater and rainfall run-off contributed 73% +/- 8% and 15% +/- 12%, respectively. Soil water was the main source of N-15-NO3 in baseflow river water, which contributes 78% +/- 4% of overall source, but precipitation only contributes 10%. The average annual N-r deposition flux was 24.4 +/- 4.2 kg center dot ha(-1)center dot yr(-1), whereas the annual total nitrogen exportation flux was 1062 +/- 269.8 kg center dot yr(-1). The 46% of HDO or D2O for river water came from rainfall run-off, which would transport a maximum nitrate flux of 354 kg center dot yr(-1). Moreover, vegetation cover and soil infiltration resulted in delta N-15 enrichment and a decrease in N-r in river flow. |
| WOS关键词 | OXYGEN ISOTOPIC COMPOSITION ; LAND-USE TYPES ; SOIL-WATER ; WET DEPOSITION ; HYDROLOGIC PROCESSES ; TERRESTRIAL WATER ; STABLE-ISOTOPE ; NITRATE ; GROUNDWATER ; PRECIPITATION |
| 资助项目 | Youth Innovation Promotion Association CAS; National Natural Science Foundation of China[41871080] ; Youth Innovation Promotion Association CAS; National Natural Science Foundation of China[31570465] ; National Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07101001] |
| WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| 出版者 | WILEY |
| WOS记录号 | WOS:000474658500008 |
| 资助机构 | Youth Innovation Promotion Association CAS; National Natural Science Foundation of China ; National Major Science and Technology Program for Water Pollution Control and Treatment |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/58562]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Gao, Yang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Yang,Hao, Zhuo,Han, Ning,et al. Tracking the fate of deposited nitrogen and its redistribution in a subtropical watershed in China[J]. ECOHYDROLOGY,2019,12(5):16. |
| APA | Gao, Yang.,Hao, Zhuo.,Han, Ning.,Yang, Jun.,Tian, Jing.,...&He, Nianpeng.(2019).Tracking the fate of deposited nitrogen and its redistribution in a subtropical watershed in China.ECOHYDROLOGY,12(5),16. |
| MLA | Gao, Yang,et al."Tracking the fate of deposited nitrogen and its redistribution in a subtropical watershed in China".ECOHYDROLOGY 12.5(2019):16. |
入库方式： OAI收割
来源：地理科学与资源研究所
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