Impacts of Precipitation on Ecosystem Carbon Fluxes in Desert-Grasslands in Inner Mongolia, China
文献类型：期刊论文
| 作者 | Zhang, Rui1,2,3; Zhao, Xueyong1,2; Zuo, Xiaoan1,2; Qu, Hao1; Degen, A. Allan4; Luo, Yayong2; Ma, Xujun1; Chen, Min1; Liu, Liangxu1; Chen, Juanli2,3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 2019-02-16 |
| 卷号 | 124期号:3页码:1266-1276 |
| ISSN号 | 2169-897X |
| 关键词 | net ecosystem productivity ecosystem respiration gross ecosystem productivity precipitation variation desert-grasslands |
| DOI | 10.1029/2018JD028419 |
| 通讯作者 | Zhang, Rui(zhangr12@lzu.edu.cn) ; Zhao, Xueyong(zhaoxy@lzb.ac.cn) |
| 英文摘要 | The frequency and amount of precipitation exert profound impacts on plants and the soil subsystem in dryland ecosystems. To quantitatively assess the effect of precipitation on ecosystem carbon fluxes during the growing season, a field experiment was carried out in a native desert-grassland ecosystem in Inner Mongolia to determine the dynamics of ecosystem carbon fluxes along a precipitation gradient (-60%, -40%, -20%, CK, +20%, +40%, and +60%; CK is natural precipitation). The net ecosystem productivity (NEP) and gross ecosystem productivity (GEP) exhibited a single peak, whereas ecosystem respiration (Reco) exhibited a bimodal peak across all precipitation treatments. Reco reached its highest value at the beginning of August, whereas NEP and GEP reached their highest values at the end of August. Mean values of carbon fluxes increased with an increase in precipitation (from NEP: 0.06molm(-2)s(-1), Reco: 0.37molm(-2)s(-1), GEP: 0.42molm(-2)s(-1) at -60% to NEP: 1.25molm(-2)s(-1), Reco: 0.93molm(-2)s(-1), and GEP: 2.18molm(-2)s(-1) at +60%). Increased precipitation stimulated GEP more so than Reco during the growing season, resulting in an enhanced NEP, and decreased precipitation reduced GEP more so than Reco, leading to a reduced NEP. We concluded that the carbon sequestration capacity was enhanced by increased precipitation in the desert-grassland ecosystem. |
| 收录类别 | SCI |
| WOS关键词 | SOIL CO2 EMISSION ; INTERANNUAL VARIABILITY ; DIOXIDE EXCHANGE ; TEMPERATURE SENSITIVITY ; TERRESTRIAL ECOSYSTEMS ; PRODUCTIVITY RESPONSES ; RAINFALL VARIABILITY ; NITROGEN ADDITION ; GROWING-SEASON ; WATER |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000459377000006 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555559 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang, Rui; Zhao, Xueyong |
| 作者单位 | 1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Urat Desert Grassland Res Stn, Lanzhou, Gansu, Peoples R China 2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Naiman Desertificat Res Stn, Lanzhou, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Beijing, Peoples R China 4.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Wyler Dept Dryland Agr, Desert Anim Adaptat & Husb, Beer Sheva, Israel |
| 推荐引用方式 GB/T 7714 | Zhang, Rui,Zhao, Xueyong,Zuo, Xiaoan,et al. Impacts of Precipitation on Ecosystem Carbon Fluxes in Desert-Grasslands in Inner Mongolia, China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(3):1266-1276. |
| APA | Zhang, Rui.,Zhao, Xueyong.,Zuo, Xiaoan.,Qu, Hao.,Degen, A. Allan.,...&Chen, Juanli.(2019).Impacts of Precipitation on Ecosystem Carbon Fluxes in Desert-Grasslands in Inner Mongolia, China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(3),1266-1276. |
| MLA | Zhang, Rui,et al."Impacts of Precipitation on Ecosystem Carbon Fluxes in Desert-Grasslands in Inner Mongolia, China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.3(2019):1266-1276. |
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来源：寒区旱区环境与工程研究所
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