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学科主题: 生物科学::普通生物学
题名: The temperature sensitivity of ecosystem respiration to climate change in an alpine meadow on the Tibet plateau: A reciprocal translocation experiment
作者: Hu, YG (Hu, Yigang)1, 2; Jiang, LL (Jiang, Lili)1; Wang, SP (Wang, Shiping)1, 4; Zhang, ZH (Zhang, Zhenhua)3; Luo, CY (Luo, Caiyun)3; Bao, XY (Bao, Xiaoying)7; Niu, HS (Niu, Haishan)7; Xu, GP (Xu, Guangping)5; Duan, JC (Duan, Jichuang)6; Zhu, XX (Zhu, Xiaoxue)3; Cui, SJ (Cui, Shujuan)1, 7; Du, MY (Du, Mingyuan)8
通讯作者: Wang, SP
刊名: AGRICULTURAL AND FOREST METEOROLOGY
发表日期: 2016
DOI: 10.1016/j.agrformet.2015.10.002
卷: 216, 期:0, 页:93-104
收录类别: SCI
合作性质: 国际
文章类型: Article
英文摘要: Information about the potential effects of climate change, especially cooling, on ecosystem respiration (Re) in alpine meadows is scarce. We determined the effects of warming and cooling on Re on the Tibetan Plateau using a 2-year reciprocal translocation experiment with 4 different vegetation types (3 alpine meadows and 1 alpine shrub differentiated by plant community composition) along an elevation gradient from 3200 to 3800 m (with vegetation types E2, E4, E6 and E8 at 3200, 3600, 3800 and 3800 m, respectively) during the growing seasons in 2008 and 2009. Mean growing seasonal Re decreased by 13.6, 30.3 and 40.7% per 200m rise in elevation (cooling) for vegetation types E2, E4 and E6, but increased by 1.3, 35.9 and 58.8% per 200 m decrease in elevation (warming) for vegetation types E4, E6 and E8, respectively. Soil temperature explained 49.3-64.0% of daily Re variation and aboveground biomass explained 21.5-61.6% of average Re variation of the growing season for all vegetation types, but the effect of soil moisture on Re was small over 2-year. The values of Re temperature sensitivity increased with an increase in elevation for both warming (3.3, 24.3 and 53.5%degrees C-1 for vegetation types E4, E6 and E8) and cooling (8.0, 19.1 and 24.4%degrees C-1 for vegetation types E2, E4 and E6), suggesting that alpine meadow at higher elevation was more sensitive to both warming and cooling. Based on the values of Re temperature sensitivity for all pooled vegetation types (25.4, 5.6 and 19.6%degrees C-1 for warming, cooling and pooled warming and cooling), it could be over-estimated by 23% for warming alone compared with pooled warming and cooling. Therefore, asymmetrical responses of Re to warming and cooling should be taken into account when we evaluate the effect of temperature change on Re using models in the future. (C) 2015 Elsevier B.V. All rights reserved.
语种: 英语
WOS记录号: WOS:000367491300009
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7781
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 101001, Peoples R China
2.Chinese Acad Sci, Cold & Arid Reg & Environm & Engn Res Inst, Shapotou Desert Expt & Res Stn, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
5.Chinese Acad Sci, Guangxi Inst Bot, Guilin 541006, Peoples R China
6.Binhai Res Inst Tianjin, Tianjin 300457, Peoples R China
7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
8.Natl Inst Agroenvironm Sci, Tsukuba, Ibaraki 3058604, Japan

Recommended Citation:
Hu, YG ,Jiang, LL ,Wang, SP ,et al. The temperature sensitivity of ecosystem respiration to climate change in an alpine meadow on the Tibet plateau: A reciprocal translocation experiment[J]. AGRICULTURAL AND FOREST METEOROLOGY,2016,216(0):93-104.
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