气候变化领域集成服务门户(CCPortal): The temperature sensitivity of ecosystem respiration to climate change in an alpine meadow on the Tibet plateau: A reciprocal translocation experiment

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DOI	10.1016/j.agrformet.2015.10.002
	The temperature sensitivity of ecosystem respiration to climate change in an alpine meadow on the Tibet plateau: A reciprocal translocation experiment
	Hu, Yigang; Jiang, Lili; Wang, Shiping; Zhang, Zhenhua; Luo, Caiyun; Bao, Xiaoying; Niu, Haishan; Xu, Guangping; Duan, Jichuang; Zhu, Xiaoxue; Cui, Shujuan; Du, Mingyuan
通讯作者	Wang, SP (通讯作者)
发表日期	2016
ISSN	0168-1923
EISSN	1873-2240
起始页码	93
结束页码	104
卷号	216
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.
关键词	SOIL MICROBIAL RESPIRATION CARBON-DIOXIDE EXCHANGE LITTER MASS-LOSS PLANT BIOMASS CO2 EXCHANGE SUBSTRATE AVAILABILITY SPECIES COMPOSITION SEASONAL-VARIATION NITROGEN ADDITION ORGANIC-MATTER
英文关键词	Temperature change; Warming and cooling; Asymmetrical response; Ecosystem respiration; Alpine meadows; Tibetan Plateau
语种	英语
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000367491300009
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258797
推荐引用方式 GB/T 7714	Hu, Yigang,Jiang, Lili,Wang, Shiping,et al. The temperature sensitivity of ecosystem respiration to climate change in an alpine meadow on the Tibet plateau: A reciprocal translocation experiment[J]. 中国科学院青藏高原研究所,2016,216.
APA	Hu, Yigang.,Jiang, Lili.,Wang, Shiping.,Zhang, Zhenhua.,Luo, Caiyun.,...&Du, Mingyuan.(2016).The temperature sensitivity of ecosystem respiration to climate change in an alpine meadow on the Tibet plateau: A reciprocal translocation experiment.AGRICULTURAL AND FOREST METEOROLOGY,216.
MLA	Hu, Yigang,et al."The temperature sensitivity of ecosystem respiration to climate change in an alpine meadow on the Tibet plateau: A reciprocal translocation experiment".AGRICULTURAL AND FOREST METEOROLOGY 216(2016).