A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes
Abstract
Soil respiration (Rs) is the second-largest terrestrial carbon (C) flux. Although Rs has been extensively studied across a broad range of biomes, there is surprisingly little consensus on how the spatiotemporal patterns of Rs will be altered in a warming climate with changing precipitation regimes. Here, we present a global synthesis Rs data from studies that have manipulated precipitation in the field by collating studies from 113 increased precipitation treatments, 91 decreased precipitation treatments, and 14 prolonged drought treatments. Our meta-analysis indicated that when the increased precipitation treatments were normalized to 28% above the ambient level, the soil moisture, Rs,and the temperature sensitivity (Q10) values increased by an average of 17%, 16%, and 6%, respectively, and the soil temperature decreased by -1.3%. The greatest increases in Rs and Q10 were observed in arid areas, and the stimulation rates decreased with increases in climate humidity. When the decreased precipitation treatments were normalized to 28% below the ambient level, the soil moisture and Rs values decreased by an average of -14% and -17%, respectively, and the soil temperature and Q10 values were not altered. The reductions in soil moisture tended to be greater in more humid areas. Prolonged drought without alterations inmore »
- Authors:
-
- Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Vegetation and Environmental Change, Inst. of Botany
- Chinese Academy of Sciences (CAS), Beijing (China). State Key Lab. of Vegetation and Environmental Change, Inst. of Botany; Univ. of Chinese Academy of Sciences, Yuquanlu, Beijing (China)
- Univ. of South Florida, Tampa, FL (United States). Dept. of Integrative Biology
- North Carolina State Univ., Raleigh, NC (United States). Dept. of Forestry and Environmental Resources
- Peking Univ., Beijing (China). Dept. of Ecology, College of Urban and Environmental Science
- Henan Univ., Kaifeng, Henan (China). State Key Lab. of Cotton Biology, Key Lab. of Plant Stress Biology,College of Life Sciences
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Earth Sciences Division
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1474928
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Global Change Biology
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 4; Journal ID: ISSN 1354-1013
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; apparent Q10; aridity index; drought; meta‐analysis; precipitation regime; soil moisture; soil temperature; wet
Citation Formats
Liu, Lingli, Wang, Xin, Lajeunesse, Marc J., Miao, Guofang, Piao, Shilong, Wan, Shiqiang, Wu, Yuxin, Wang, Zhenhua, Yang, Sen, Li, Ping, and Deng, Meifeng. A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes. United States: N. p., 2015.
Web. doi:10.1111/gcb.13156.
Liu, Lingli, Wang, Xin, Lajeunesse, Marc J., Miao, Guofang, Piao, Shilong, Wan, Shiqiang, Wu, Yuxin, Wang, Zhenhua, Yang, Sen, Li, Ping, & Deng, Meifeng. A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes. United States. https://doi.org/10.1111/gcb.13156
Liu, Lingli, Wang, Xin, Lajeunesse, Marc J., Miao, Guofang, Piao, Shilong, Wan, Shiqiang, Wu, Yuxin, Wang, Zhenhua, Yang, Sen, Li, Ping, and Deng, Meifeng. Wed .
"A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes". United States. https://doi.org/10.1111/gcb.13156. https://www.osti.gov/servlets/purl/1474928.
@article{osti_1474928,
title = {A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes},
author = {Liu, Lingli and Wang, Xin and Lajeunesse, Marc J. and Miao, Guofang and Piao, Shilong and Wan, Shiqiang and Wu, Yuxin and Wang, Zhenhua and Yang, Sen and Li, Ping and Deng, Meifeng},
abstractNote = {Soil respiration (Rs) is the second-largest terrestrial carbon (C) flux. Although Rs has been extensively studied across a broad range of biomes, there is surprisingly little consensus on how the spatiotemporal patterns of Rs will be altered in a warming climate with changing precipitation regimes. Here, we present a global synthesis Rs data from studies that have manipulated precipitation in the field by collating studies from 113 increased precipitation treatments, 91 decreased precipitation treatments, and 14 prolonged drought treatments. Our meta-analysis indicated that when the increased precipitation treatments were normalized to 28% above the ambient level, the soil moisture, Rs,and the temperature sensitivity (Q10) values increased by an average of 17%, 16%, and 6%, respectively, and the soil temperature decreased by -1.3%. The greatest increases in Rs and Q10 were observed in arid areas, and the stimulation rates decreased with increases in climate humidity. When the decreased precipitation treatments were normalized to 28% below the ambient level, the soil moisture and Rs values decreased by an average of -14% and -17%, respectively, and the soil temperature and Q10 values were not altered. The reductions in soil moisture tended to be greater in more humid areas. Prolonged drought without alterations in the amount of precipitation reduced the soil moisture and Rs by -12% and -6%, respectively, but did not alter Q10. Overall, our synthesis suggests that soil moisture and Rs tend to be more sensitive to increased precipitation in more arid areas and more responsive to decreased precipitation in more humid areas. The responses of Rs and Q10 were predominantly driven by precipitation-induced changes in the soil moisture, whereas changes in the soil temperature had limited impacts. Finally, our synthesis of prolonged drought experiments also emphasizes the importance of the timing and frequency of precipitation events on ecosystem C cycles. Given these findings, we urge future studies to focus on manipulating the frequency, intensity, and seasonality of precipitation with an aim to improving our ability to predict and model feedback between Rs and climate change.},
doi = {10.1111/gcb.13156},
journal = {Global Change Biology},
number = 4,
volume = 22,
place = {United States},
year = {Wed Nov 11 00:00:00 EST 2015},
month = {Wed Nov 11 00:00:00 EST 2015}
}
Web of Science
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