Short-term responses of ecosystem respiration to warming and nitrogen addition in an alpine swamp meadow
文献类型：期刊论文
| 作者 | Bai, Wei1; Wang, Genxu2 ; Xi, Jingyang1; Liu, Yongwan1; Yin, Pengsong1
|
| 刊名 | EUROPEAN JOURNAL OF SOIL BIOLOGY
 |
| 出版日期 | 2019-05-01 |
| 卷号 | 92页码:16-23 |
| 关键词 | Warming Nitrogen addition Ecosystem respiration Alpine swamp meadow Qinghai-Tibetan plateau |
| ISSN号 | 1164-5563 |
| DOI | 10.1016/j.ejsobi.2019.04.003 |
| 通讯作者 | Bai, Wei(baiwei915@163.com) |
| 英文摘要 | Information regarding the interactive effects of global warming and increasing nitrogen (N) deposition on CO2 emissions in the alpine grassland ecosystem is scarce, especially in the permafrost region of the Qinghai-Tibetan Plateau. We conducted a manipulative field experiment in an alpine swamp meadow to investigate the responses of ecosystem respiration (ER) to simulated warming and N addition. Results showed that the interaction between warming and N addition significantly increased ER by 41.3-239.6%, which might be related to the enhancements in plant autotrophic respiration and soil microbial biomass and activity. The correlations between ER and a single hydrothermic factor tended to be weakened with the increasing complexity of the treatment method. The drought stress on CO2 emissions was not found due to the thawing of the permafrost and the upward diffusion of soil moisture, thus air temperature combined with soil temperature explained 80% of the ER fluctuations. Meanwhile, warming increased the aboveground biomass (AGB) and belowground biomass (BGB) by 44.2-68.1% and 48.1-82.6%, respectively, suggesting that more biomass was allocated to the belowground components. N addition increased AGB by 21.2-30.3%, while there was no significant effect on BGB. Warming combined with N addition strongly increased AGB and BGB by 52.0-159.5% and 59.0-102.1%, respectively. These results indicated that plant production and allocation pattern might also be important factors affecting CO2 emissions. In addition, warming alone and warming combined with N addition increased soil microbial biomass carbon (MBC) by 19.1-90.7% and 28.1-80.4%, respectively, and the enhancement in soil microbial biomass and activity might promote the release of soil carbon. |
| WOS关键词 | SOIL RESPIRATION ; CLIMATE-CHANGE ; CARBON-CYCLE ; MICROBIAL BIOMASS ; PLANT-PRODUCTION ; CO2 ; TEMPERATURE ; PLATEAU ; EMISSION ; IMPACTS |
| 资助项目 | National Natural Science Foundation of China[41563005] ; National Natural Science Foundation of China[41271224] ; Young Scholars Science Foundation of Lanzhou Jiaotong University[2015013] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000469158800003 |
| 出版者 | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Young Scholars Science Foundation of Lanzhou Jiaotong University |
| 源URL | [http://ir.imde.ac.cn/handle/131551/26232]  |
| 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 |
| 通讯作者 | Bai, Wei |
| 作者单位 | 1.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Gansu, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Wei,Wang, Genxu,Xi, Jingyang,et al. Short-term responses of ecosystem respiration to warming and nitrogen addition in an alpine swamp meadow[J]. EUROPEAN JOURNAL OF SOIL BIOLOGY,2019,92:16-23. |
| APA | Bai, Wei,Wang, Genxu,Xi, Jingyang,Liu, Yongwan,&Yin, Pengsong.(2019).Short-term responses of ecosystem respiration to warming and nitrogen addition in an alpine swamp meadow.EUROPEAN JOURNAL OF SOIL BIOLOGY,92,16-23. |
| MLA | Bai, Wei,et al."Short-term responses of ecosystem respiration to warming and nitrogen addition in an alpine swamp meadow".EUROPEAN JOURNAL OF SOIL BIOLOGY 92(2019):16-23. |
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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