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Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows
Zhao, JX (Zhao, Jingxue)1,2,3; Luo, TX (Luo, Tianxiang)3; Li, RC (Li, Ruicheng)1,2; Wei, HX (Wei, Haixia)3; Li, X (Li, Xiang)3; Du, MY (Du, Mingyuan)4; Tang, YH (Tang, Yanhong)1,2
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
2018-04-15
Volume252Issue:0Pages:121-129
DOI10.1016/j.agrformet.2018.01.014
Abstract

There is scant evidence for the interactive effect of warming and precipitation change on ecosystem respiration (Re), particularly regarding for alpine meadow ecosystems where there are high belowground biomass and soil organic carbon stocks. Such knowledge is crucial for predicting terrestrial carbon cycling under climate change. We transplanted meadow blocks reciprocally among three altitudes (4650 m, 4950 m and 5200 m) in the central Tibetan Plateau and examined the controls on Re in 1.5 and 2.5 years after the transplantation. Under the same degree of experimental warming by the downward transplantation, the Re increased and decreased significantly when the precipitation was higher and lower at destination sites than at the home sites, respectively. However, the experimental cooling by the upward transplantation consistently reduced the Re regardless of the precipitation change. Further analysis showed that the increase of Re under the experimental warming was closely related to the increase of aboveground biomass, whereas the reduction of Re under the cooling was highly correlated with the decrease of soil temperature. Moreover, the temperature sensitivity of the Re was decreased by the experimental warming but increased by the experimental cooling. These results suggest that effects of climate warming on the ecosystem respiration are highly associated with precipitation changes in the temperature-limited meadow ecosystems.

Subject Area地理学
WOS IDWOS:000427341400012
Language英语
Indexed BySCIE
KeywordSoil Organic-carbon Reciprocal Translocation Experiment Large Altitudinal Gradient Climate-change Autotrophic Respiration Plateau Responses Sensitivity Grassland Nitrogen
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
Cooperation Status国际
ISSN0168-1923
Department环境变化与地表过程重点实验室
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8677
Collection图书馆
Corresponding AuthorLuo, TX (Luo, Tianxiang); Tang, YH (Tang, Yanhong)
Affiliation1.Peking Univ, Minist Educ, Dept Ecol, Coll Urban & Environm Sci, 5 Yiheyuan Rd, Beijing 100871, Peoples R China;
2.Peking Univ, Minist Educ, Key Lab Earth Surface Proc, 5 Yiheyuan Rd, Beijing 100871, Peoples R China;
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Courtyard 16,Bldg 3,Lincui Rd, Beijing 100101, Peoples R China;
4.Natl Agr & Food Res Org, Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan.
Recommended Citation
GB/T 7714
Zhao, JX ,Luo, TX ,Li, RC ,et al. Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows[J]. AGRICULTURAL AND FOREST METEOROLOGY,2018,252(0):121-129.
APA Zhao, JX .,Luo, TX .,Li, RC .,Wei, HX .,Li, X .,...&Tang, YH .(2018).Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows.AGRICULTURAL AND FOREST METEOROLOGY,252(0),121-129.
MLA Zhao, JX ,et al."Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows".AGRICULTURAL AND FOREST METEOROLOGY 252.0(2018):121-129.
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