Nonlinear responses of ecosystem carbon fluxes and water-use efficiency to nitrogen addition in Inner Mongolia grassland
文献类型：期刊论文
| 作者 | Tian, Dashuan2; Niu, Shuli2; Pan, Qingmin ; Ren, Tingting; Chen, Shiping; Bai, Yongfei; Han, Xingguo3
|
| 刊名 | FUNCTIONAL ECOLOGY
 |
| 出版日期 | 2016 |
| 卷号 | 30期号:3页码:490-499 |
| 关键词 | ecosystem carbon balance nitrogen deposition precipitation pattern saturation response threshold response water flux |
| ISSN号 | 0269-8463 |
| DOI | 10.1111/1365-2435.12513 |
| 文献子类 | Article |
| 英文摘要 | 1. Nitrogen (N) deposition is a continuous process and likely to affect ecosystem carbon (C) and water fluxes in a nonlinear way. However, experimental evidence is still lacking because most previous studies on these impacts usually used two discrete levels of N treatment. 2. By a 12-year, 6-level N addition experiment in Inner Mongolia grassland, we found that the responses of C fluxes, including net ecosystem carbon exchange (NEE), gross ecosystem productivity (GEP), ecosystem respiration (ER), all exhibited nonlinear patterns with increasing N addition rate while that of evapotranspiration did not significantly change. As a result, the response of ecosystem water-use efficiency (EWUE) followed a similar pattern with NEE. 3. These N-induced changes in C fluxes were greatly affected by the distribution of precipitation among different stages of growing seasons and mainly driven by the alterations in biomass production rather than soil temperature and soil moisture. 4. This study highlights the importance of the nonlinearity of N addition impacts on ecosystem C fluxes, which should be incorporated into the global-C-cycling models for better predicting future C balance. Our results also have implications for the use of fertilization in restoring the degraded grasslands given that N addition can promote biomass production and ecosystem C uptake without additional water evapotranspiration but also change ecosystem composition. |
| 学科主题 | Ecology |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1365-2435 |
| WOS关键词 | SEMIARID GRASSLAND ; FOREST ECOSYSTEMS ; EXCHANGE ; VEGETATION ; CO2 ; SEQUESTRATION ; EXPOSURE ; PULSES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000372949000016 |
| 出版者 | WILEY |
| 资助机构 | Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [30970496, 31430016] ; Knowledge Innovation Program of the Chinese Academy of SciencesChinese Academy of SciencesKnowledge Innovation Program of the Chinese Academy of Sciences [KSCX2-EW-Z-5] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/25199]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Dashuan,Niu, Shuli,Pan, Qingmin,et al. Nonlinear responses of ecosystem carbon fluxes and water-use efficiency to nitrogen addition in Inner Mongolia grassland[J]. FUNCTIONAL ECOLOGY,2016,30(3):490-499. |
| APA | Tian, Dashuan.,Niu, Shuli.,Pan, Qingmin.,Ren, Tingting.,Chen, Shiping.,...&Han, Xingguo.(2016).Nonlinear responses of ecosystem carbon fluxes and water-use efficiency to nitrogen addition in Inner Mongolia grassland.FUNCTIONAL ECOLOGY,30(3),490-499. |
| MLA | Tian, Dashuan,et al."Nonlinear responses of ecosystem carbon fluxes and water-use efficiency to nitrogen addition in Inner Mongolia grassland".FUNCTIONAL ECOLOGY 30.3(2016):490-499. |
入库方式： OAI收割
来源：植物研究所
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