A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes

doi:10.1111/gcb.13156

	A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes
	Liu, Lingli; Wang, Xin 1; Lajeunesse, Marc J.; Miao, Guofang 3; Piao, Shilong 4; Wan, Shiqiang 5; Wu, Yuxin 6; Wang, Zhenhua 1; Yang, Sen 1; Li, Ping 1; Deng, Meifeng 1
	2016
发表期刊	GLOBAL CHANGE BIOLOGY
ISSN	1354-1013
卷号	22 期号:4 页码:1394-1405
摘要	Soil respiration (R-s) is the second-largest terrestrial carbon (C) flux. Although R-s has been extensively studied across a broad range of biomes, there is surprisingly little consensus on how the spatiotemporal patterns of R-s will be altered in a warming climate with changing precipitation regimes. Here, we present a global synthesis R-s 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, R-s,R- and the temperature sensitivity (Q(10)) values increased by an average of 17%, 16%, and 6%, respectively, and the soil temperature decreased by -1.3%. The greatest increases in R-s and Q(10) 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 R-s values decreased by an average of -14% and -17%, respectively, and the soil temperature and Q(10) 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 R-s by -12% and -6%, respectively, but did not alter Q(10). Overall, our synthesis suggests that soil moisture and R-s 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 R-s and Q(10) 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 R-s and climate change.
关键词	apparent Q(10) aridity index drought meta-analysis precipitation regime soil moisture soil temperature wet
学科领域	Biodiversity Conservation ; Ecology ; Environmental Sciences
DOI	10.1111/gcb.13156
收录类别	SCI
语种	英语
WOS关键词	CLIMATE-CHANGE ; TERRESTRIAL ECOSYSTEMS ; MANIPULATION EXPERIMENTS ; TEMPERATURE SENSITIVITY ; GRASSLAND ECOSYSTEM ; SEMIARID GRASSLAND ; CO2 EFFLUX ; RESPONSES ; PULSES ; METAANALYSIS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000371515300007
出版者	WILEY-BLACKWELL
文献子类	Article
出版地	HOBOKEN
EISSN	1365-2486
资助机构	Chinese National Key Development Program for Basic Research [2013CB956304, 2014CB954003] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31522011] ; National Science Foundation (USA)National Science Foundation (NSF) [DEB-1451031] ; National 1000 Young Talents Program
作者邮箱	lingli.liu@ibcas.ac.cn
作品OA属性	Green Submitted
引用统计	被引频次：198[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25194
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lajeunesse, Marc J.] Univ S Florida, Dept Integrat Biol, Tampa, FL 33620 USA 4.N Carolina State Univ, Dept Forestry & Environm Resources, Raleigh, NC 27659 USA 5.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 6.Henan Univ, State Key Lab Cotton Biol, Key Lab Plant Stress Biol, Coll Life Sci, Kaifeng 475004, Henan, Peoples R China 7.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Liu, Lingli,Wang, Xin,Lajeunesse, Marc J.,et al. A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes[J]. GLOBAL CHANGE BIOLOGY,2016,22(4):1394-1405.
APA	Liu, Lingli.,Wang, Xin.,Lajeunesse, Marc J..,Miao, Guofang.,Piao, Shilong.,...&Deng, Meifeng.(2016).A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes.GLOBAL CHANGE BIOLOGY,22(4),1394-1405.
MLA	Liu, Lingli,et al."A cross-biome synthesis of soil respiration and its determinants under simulated precipitation changes".GLOBAL CHANGE BIOLOGY 22.4(2016):1394-1405.

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