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Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming
Li, YM (Li, Yaoming)1,2; Lv, WW (Lv, Wangwang)2,3; Jiang, LL (Jiang, Lili)2; Zhang, LR (Zhang, Lirong)2; Wang, SP (Wang, Shiping)2,4; Wang, Q (Wang, Qi)2,3; Xue, K (Xue, Kai)3; Li, BW (Li, Bowen)2,3; Liu, PP (Liu, Peipei)2,3; Hong, H (Hong, Huan)2,3; Renzen, WM (Renzen, Wangmu)2,3; Wang, A (Wang, A.)2,3; Luo, CY (Luo, Caiyun)5,6; Zhang, ZH (Zhang, Zhenhua)5,6; Dorji, T (Dorji, Tsechoe)2,4; Tas, N (Tas, Neslihan)7,8; Wang, ZZ (Wang, Zhezhen)9; Zhou, HK (Zhou, Huakun)5,6; Wang, YF (Wang, Yanfen)3
Source PublicationGLOBAL CHANGE BIOLOGY
2019
Volume25Issue:10Pages:3438-3449
DOI10.1111/gcb.14734
Abstract

Changes in labile carbon (LC) pools and microbial communities are the primary factors controlling soil heterotrophic respiration (R-h) in warming experiments. Warming is expected to initially increase R-h but studies show this increase may not be continuous or sustained. Specifically, LC and soil microbiome have been shown to contribute to the effect of extended warming on R-h. However, their relative contribution is unclear and this gap in knowledge causes considerable uncertainty in the prediction of carbon cycle feedbacks to climate change. In this study, we used a two-step incubation approach to reveal the relative contribution of LC limitation and soil microbial community responses in attenuating the effect that extended warming has on R-h. Soil samples from three Tibetan ecosystems-an alpine meadow (AM), alpine steppe (AS), and desert steppe (DS)-were exposed to a temperature gradient of 5-25 degrees C. After an initial incubation period, soils were processed in one of two methods: (a) soils were sterilized then inoculated with parent soil microbes to assess the LC limitation effects, while controlling for microbial community responses; or (b) soil microbes from the incubations were used to inoculate sterilized parent soils to assess the microbial community effects, while controlling for LC limitation. We found both LC limitation and microbial community responses led to significant declines in R-h by 37% and 30%, respectively, but their relative contributions were ecosystem specific. LC limitation alone caused a greater R-h decrease for DS soils than AMs or ASs. Our study demonstrates that soil carbon loss due to R-h in Tibetan alpine soils-especially in copiotrophic soils-will be weakened by microbial community responses under short-term warming.

Subject AreaEnvironmental Sciences
WOS IDWOS:000480041500001
Language英语
Indexed BySCI
KeywordTemperature Sensitivity Thermal Adaptation Climate-change Respiration Matter Biomass Fungi Decomposition Acclimation Rates
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Ecology ; Environmental Sciences
Cooperation Status国际
ISSN1354-1013
Department高寒生态重点实验室
URL查看原文
PublisherWILEY
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/9208
Collection图书馆
Corresponding AuthorWang, SP (Wang, Shiping); Wang, YF (Wang, Yanfen)
Affiliation1.Beijing Forestry Univ, Coll Grassland Sci, Beijing, Peoples R China;
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China;
5.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining, Qinghai, Peoples R China;
6.Qinghai Prov Key Lab Restorat Ecol Cold Area, Xining, Qinghai, Peoples R China;
7.Lawrence Berkeley Natl Lab, Earth & Environm Sci Area, Berkeley, CA USA;
8.Lawrence Berkeley Natl Lab, Biosci Area, Berkeley, CA USA;
9.Univ Chicago, Med & Biol Sci Div, Chicago, IL 60637 USA.
Recommended Citation
GB/T 7714
Li, YM ,Lv, WW ,Jiang, LL ,et al. Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming[J]. GLOBAL CHANGE BIOLOGY,2019,25(10):3438-3449.
APA Li, YM .,Lv, WW .,Jiang, LL .,Zhang, LR .,Wang, SP .,...&Wang, YF .(2019).Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming.GLOBAL CHANGE BIOLOGY,25(10),3438-3449.
MLA Li, YM ,et al."Microbial community responses reduce soil carbon loss in Tibetan alpine grasslands under short-term warming".GLOBAL CHANGE BIOLOGY 25.10(2019):3438-3449.
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