Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands
Wang, Yonghui1,2; Song, Chao3; Yu, Lingfei4; Mi, Zhaorong5,6; Wang, Shiping7,8; Zeng, Hui9; Fang, Changming10; Li, Jingyi2; He, Jin-Sheng1,11
AbstractRecent 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.
KeywordSoil Respiration Singular Spectrum Analysis Temperature Sensitivity Substrate Availability q(10) Climate-carbon Model
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Funding OrganizationNational 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)
WOS Research AreaAgriculture
WOS SubjectSoil Science
WOS IDWOS:000435053800006
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorHe, Jin-Sheng
Affiliation1.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
11.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland & Agroecosyst, 768 Jiayuguan W Rd, Lanzhou 730020, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yonghui,Song, Chao,Yu, Lingfei,et al. Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands[J]. SOIL BIOLOGY & BIOCHEMISTRY,2018,122:50-59.
APA Wang, Yonghui.,Song, Chao.,Yu, Lingfei.,Mi, Zhaorong.,Wang, Shiping.,...&He, Jin-Sheng.(2018).Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands.SOIL BIOLOGY & BIOCHEMISTRY,122,50-59.
MLA Wang, Yonghui,et al."Convergence in temperature sensitivity of soil respiration: Evidence from the Tibetan alpine grasslands".SOIL BIOLOGY & BIOCHEMISTRY 122(2018):50-59.
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