气候变化领域集成服务门户(CCPortal): Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows

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DOI	10.1016/j.agrformet.2018.01.014
	Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows
	Zhao, Jingxue; Luo, Tianxiang; Li, Ruicheng; Wei, Haixia; Li, Xiang; Du, Mingyuan; Tang, Yanhong
通讯作者	Tang, YH (通讯作者)
发表日期	2018
ISSN	0168-1923
EISSN	1873-2240
起始页码	121
结束页码	129
卷号	252
英文摘要	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.
关键词	SOIL ORGANIC-CARBON RECIPROCAL TRANSLOCATION EXPERIMENT LARGE ALTITUDINAL GRADIENT CLIMATE-CHANGE AUTOTROPHIC RESPIRATION PLATEAU RESPONSES SENSITIVITY GRASSLAND NITROGEN
英文关键词	Cooling; Plant biomass; Reciprocal transplant experiment; Temperature sensitivity; Warming
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:000427341400012
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/259169
推荐引用方式 GB/T 7714	Zhao, Jingxue,Luo, Tianxiang,Li, Ruicheng,et al. Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows[J]. 中国科学院青藏高原研究所,2018,252.
APA	Zhao, Jingxue.,Luo, Tianxiang.,Li, Ruicheng.,Wei, Haixia.,Li, Xiang.,...&Tang, Yanhong.(2018).Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows.AGRICULTURAL AND FOREST METEOROLOGY,252.
MLA	Zhao, Jingxue,et al."Precipitation alters temperature effects on ecosystem respiration in Tibetan alpine meadows".AGRICULTURAL AND FOREST METEOROLOGY 252(2018).