Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau

doi:10.1111/gfs.12165

NWIPB OpenIR

	Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau
	Li, H.1,2; Zhang, F.1,2; Li, Y.1,2; Zhao, X.1,2; Cao, G.1,2
	2016-06-01
发表期刊	GRASS AND FORAGE SCIENCE
卷号	71 期号:2 页码:208-218
文章类型	Article
摘要	Above-ground net primary production (ANPP) and precipitation-use efficiency (PUE) are key factors that can clarify the response of grassland ecosystem carbon and water cycles to ongoing climate change. The variations of ANPP and PUE were analysed based on long-term insitu observations of a species-rich alpine meadow in the north-eastern Qinghai-Tibetan Plateau from 1981 to 2010. ANPP and PUE increased markedly over time. ANPP was significantly controlled by post-growing season length (from 1 September to the end of growing season in the previous year, R-2=031, P<001). Regression trees showed that air temperature during October of the previous year played a predominant role in ANPP annual variations. Results indicated that a strong thermal-lagging effect on ANPP variations was present in the alpine meadow ecosystem. ANPP variations were undetectable during wet, normal and dry years (P=025). Our finding supported the hypothesis that temporal site-specific ANPP variations were less regulated by a single factor. The temporal PUE declined linearly with increasing annual precipitation, and the slope was obviously steeper than that of spatial patterns. More ANPP variability in an alpine meadow under warming conditions might occur via community transition in the north-eastern Qinghai-Tibetan Plateau.
关键词	Climate Change Aggregated Growing Season Degree Days Growing Season Length Community Transition Classification And Regression Trees
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
DOI	10.1111/gfs.12165
关键词[WOS]	RAIN-USE EFFICIENCY ; SPECIES COMPOSITION ; MESIC GRASSLAND ; PLANT BIOMASS ; UNITED-STATES ; CLIMATE ; COMMUNITY ; DYNAMICS ; GRADIENT ; TUNDRA
收录类别	SCI
语种	英语
项目资助者	Strategic the Priority Research Program of the Chinese Academy of Sciences(XDB03030502) ; National Natural Science Foundation of China(41030105 ; National Key Technology RD Program(2012BAC08B06) ; 31270520 ; 31270523 ; 31070437)
WOS研究方向	Agriculture
WOS类目	Agronomy
WOS记录号	WOS:000376001900004
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/5747
专题	中国科学院西北高原生物研究所
作者单位	1.Chinese Acad Sci, Northwest Inst Plateau Biol, Xinning St 23, Xining 810001, Qinghai, Peoples R China 2.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Li, H.,Zhang, F.,Li, Y.,et al. Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau[J]. GRASS AND FORAGE SCIENCE,2016,71(2):208-218.
APA	Li, H.,Zhang, F.,Li, Y.,Zhao, X.,&Cao, G..(2016).Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau.GRASS AND FORAGE SCIENCE,71(2),208-218.
MLA	Li, H.,et al."Thirty-year variations of above-ground net primary production and precipitation-use efficiency of an alpine meadow in the north-eastern Qinghai-Tibetan Plateau".GRASS AND FORAGE SCIENCE 71.2(2016):208-218.