Climatic warming enhances soil respiration resilience in an arid ecosystem
文献类型：期刊论文
| 作者 | Yu, Hongying; Liu, Xiaodi2,3; Ma, Quanhui2,3; Yin, Zuotian2,3; Wang, Yuhui3; Xu, Zhenzhu3 ; Zhou, Guangsheng
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| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
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| 出版日期 | 2021 |
| 卷号 | 756 |
| 关键词 | Soil respiration Resilience Drought Rewetting Climatic warming Desert steppe |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2020.144005 |
| 文献子类 | Article |
| 英文摘要 | Precipitation plays a vital role in maintaining desert ecosystems in which rain events after drought cause soil respiration (R-s) pulses. However, this process and its underlying mechanism remain ambiguous, particularly under climatic warming conditions. This study aims to determine the magnitude and drivers of R-s resilience to rewetting. We conducted a warming experiment in situ in a desert steppe with three climatic warming scenarios-ambient temperature as the control, long-term and moderate warming treatment, and short-term and acute warming treatment. Our findings showed that the average R-s over the measurement period in the control, moderate and acute warming plots were 0.51, 0.30 and 0.30 mu mol . CO2 . m(-2) . s(-1), respectively, and significantly increased to 1.72, 1.41 and 1.72 mu mol . CO2 . m(-2) . s(-1), respectively, after rewetting. Both microbial and root respiration substantially increased by rewetting: microbial respiration contributed more than root respiration to total R-s. The R-s significantly increased with microbial biomass carbon and soil organic carbon (SOC) contents. The R-s increase by rewetting might be due to the greater microbial respiration relying heavily on microbial biomass and the larger amount of available SOC after rewetting. A trackable pattern of R-s resilience changes occurred during the daytime. The resilience of R-s in acute warming plots was significantly higher than those in both moderate warming and no warming plots, indicating that R-s resilience might be enhanced with drought severity induced by climatic warming. These results suggest that climatic warming treatment would enhance the drought resilience of soil carbon effluxes following rewatering in arid ecosystems, consequently accelerating the positive feedback of climate change. Therefore, this information should be included in carbon cycle models to accurately assess ecosystem carbon budgets with future climate change scenarios in terrestrial ecosystems, particularly in arid areas. (C) 2020 Elsevier B.V. All rights reserved. |
| 学科主题 | Environmental Sciences |
| 出版地 | AMSTERDAM |
| 电子版国际标准刊号 | 1879-1026 |
| WOS关键词 | PRECIPITATION PULSES ; INFRARED HEATER ; DESERT STEPPE ; HETEROTROPHIC RESPIRATION ; TEMPERATURE SENSITIVITY ; MICROBIAL COMMUNITIES ; GRASSLAND ; RESPONSES ; CO2 ; INCREASES |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000603487500095 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China [41775108, 31661143028] ; China Special Fund for Meteorological Research in the Public Interest (Major projects) [GYHY201506001-3] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/26814]  |
| 专题 | 植被与环境变化国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China 3.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Hongying,Liu, Xiaodi,Ma, Quanhui,et al. Climatic warming enhances soil respiration resilience in an arid ecosystem[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,756. |
| APA | Yu, Hongying.,Liu, Xiaodi.,Ma, Quanhui.,Yin, Zuotian.,Wang, Yuhui.,...&Zhou, Guangsheng.(2021).Climatic warming enhances soil respiration resilience in an arid ecosystem.SCIENCE OF THE TOTAL ENVIRONMENT,756. |
| MLA | Yu, Hongying,et al."Climatic warming enhances soil respiration resilience in an arid ecosystem".SCIENCE OF THE TOTAL ENVIRONMENT 756(2021). |
入库方式： OAI收割
来源：植物研究所
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