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
	He, Jin-Sheng1,11 ; Li, Jingyi 10; Fang, Changming 2; Zeng, Hui 3; Wang, Shiping4,5 ; Mi, Zhaorong 6,7; Yu, Lingfei 8; Song, Chao 9; Wang, Yonghui 10,11
刊名	SOIL BIOLOGY & BIOCHEMISTRY
	2018-07-01
卷号	122 页码:50-59
关键词	Soil Respiration Singular Spectrum Analysis Temperature Sensitivity Substrate Availability q(10) Climate-carbon Model
ISSN号	0038-0717
DOI	10.1016/j.soilbio.2018.04.005
文献子类	Article
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关键词	CLIMATE-CHANGE ; ELEVATED CO2 ; HETEROTROPHIC RESPIRATION ; TERRESTRIAL ECOSYSTEMS ; GLOBAL CONVERGENCE ; CARBON ; DEPENDENCE ; PHOTOSYNTHESIS ; MODEL ; SYSTEM
WOS研究方向	Agriculture
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000435053800006
资助机构	National Basic Research Program of China(2014CB954000) ; National Nature Science Foundation of China(31630009 ; National Key Research and Development Program of China(2016YFC0500602) ; Ministry of Science and Technology of China(2015BAC02B04) ; Natural Science Foundation of Inner Mongolia(2015ZD05) ; 31600385 ; 31670454)
内容类型	期刊论文
源URL	[http://ir.nwipb.ac.cn/handle/363003/13794]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
通讯作者	He, Jin-Sheng
作者单位	1.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland & Agroecosyst, 768 Jiayuguan W Rd, Lanzhou 730020, Gansu, Peoples R China 2.Fudan Univ, Key Lab Biodivers & Ecol Engn, Coastal Ecosyst Res Stn Yangtze River Estuary, Minist Educ,Inst Biodivers Sci, Shanghai 200433, Peoples R China 3.Peking Univ, Key Lab Urban Habitat Environm Sci & Technol, Shenzhen Grad Sch, Shenzhen 518005, Peoples R China 4.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Divers, Beijing 100085, 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 Agr Sci, Farmland Irrigat Res Inst, Xinxiang 453002, Peoples R China 8.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China 9.Univ Georgia, Odum Sch Ecol, 140 East Green St, Athens, GA 30602 USA 10.Inner Mongolia Univ, Sch Ecol & Environm, Dept Ecol, 235 West Coll Rd, Hohhot 010021, Peoples R China
推荐引用方式 GB/T 7714	He, Jin-Sheng,Li, Jingyi,Fang, Changming,et al. Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,122:50-59.
APA	He, Jin-Sheng.,Li, Jingyi.,Fang, Changming.,Zeng, Hui.,Wang, Shiping.,...&Wang, Yonghui.(2018).Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands.SOIL BIOLOGY & BIOCHEMISTRY,122,50-59.
MLA	He, Jin-Sheng,et al."Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands".SOIL BIOLOGY & BIOCHEMISTRY 122(2018):50-59.