Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands

doi:10.1016/j.soilbio.2018.04.005

	Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands
	Wang, SP (Wang, Shiping)7,8; Zeng, H (Zeng, Hui)9; Li, JY (Li, Jingyi)2; Fang, CM (Fang, Changming)10; He, JS (He, Jin-Sheng)1,11; Wang, YH (Wang, Yonghui)1,2; Song, C (Song, Chao)3; Yu, LF (Yu, Lingfei)4; Mi, ZR (Mi, Zhaorong)5,6
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2018-07-01
卷号	122 期号:0 页码:50-59
关键词	CLIMATE-CHANGE ELEVATED CO2 HETEROTROPHIC RESPIRATION TERRESTRIAL ECOSYSTEMS GLOBAL CONVERGENCE CARBON DEPENDENCE PHOTOSYNTHESIS MODEL SYSTEM
ISSN号	0038-0717
DOI	10.1016/j.soilbio.2018.04.005
英文摘要	Recent studies proposed a convergence in the temperature sensitivity (Q(10)) of soil respiration (R-s) after eliminating confounding effects using novel approaches such as Singular Spectrum Analysis (SSA) or the mixed effects model (MEM) method. However, SSA has only been applied to eddy covariance data for estimating the Q(10) with air temperature, which may result in underestimations in responses of below-ground carbon cycling processes to climate warming in coupled climate-carbon models; MEM remains untested for its suitability in single-site studies. To examine the unconfounded Q(10) of R-s these two novel methods were combined with directly measured R-s for 6 years in two Tibetan alpine ecosystems. The results showed that, 1) confounded Q(10) of Rs estimated from seasonal R-s-temperature relationship positively correlated with the seasonality of R-s and 2) estimates of unconfounded Q(10) of R-s using SSA (mean = 2.4, 95% confidence interval (CI): 2.1-2.7) and MEM (mean = 3.2, 95% CI: 2.3-4.2) were consistent with the theoretical subcellular-level Q(10) (approximate to 2.4). These results support the convergence in the Q(10) of R-s and imply a conserved R-s-temperature relationship. These findings indicate that the seasonality of R-s has to be eliminated from estimating the Q(10) of R-s, otherwise the estimates should be questionable. They also indicate that seasonal Q(10) and its responses to warming should not be directly used in carbon-climate models as they contain confounding effects.
WOS研究方向	Agriculture
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000435053800006
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/8617]
专题	青藏高原研究所_图书馆
作者单位	1.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Key Lab Earth Surface Proc,Minist Educ, 5 Yiheyuan Rd, Beijing 100871, Peoples R China; 2.Inner Mongolia Univ, Sch Ecol & Environm, Dept Ecol, 235 West Coll Rd, Hohhot 010021, Peoples R China; 3.Univ Georgia, Odum Sch Ecol, 140 East Green St, Athens, GA 30602 USA; 4.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China; 5.Chinese Acad Agr Sci, Farmland Irrigat Res Inst, Xinxiang 453002, Peoples R China; 6.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Qinghai, Peoples R China; 7.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Divers, Beijing 100085, Peoples R China; 8.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 9.Peking Univ, Key Lab Urban Habitat Environm Sci & Technol, Shenzhen Grad Sch, Shenzhen 518005, Peoples R China; 10.Fudan Univ, Key Lab Biodivers & Ecol Engn, Coastal Ecosyst Res Stn Yangtze River Estuary, Minist Educ,Inst Biodivers Sci, Shanghai 200433, Peoples R China;
推荐引用方式 GB/T 7714	Wang, SP ,Zeng, H ,Li, JY ,et al. Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,122(0):50-59.
APA	Wang, SP .,Zeng, H .,Li, JY .,Fang, CM .,He, JS .,...&Mi, ZR .(2018).Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands.SOIL BIOLOGY & BIOCHEMISTRY,122(0),50-59.
MLA	Wang, SP ,et al."Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands".SOIL BIOLOGY & BIOCHEMISTRY 122.0(2018):50-59.