气候变化领域集成服务门户(CCPortal): Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau

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DOI	10.1093/jpe/rtw084
	Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau
	Cong, Nan; Shen, Miaogen; Piao, Shilong
通讯作者	Shen, MG (通讯作者)
发表日期	2017
ISSN	1752-9921
EISSN	1752-993X
起始页码	744
结束页码	752
卷号	10 期号:5
英文摘要	Aims Information about changes in the start and end of the vegetation growing season (SOS and EOS) is crucial for assessing ecosystem responses to climate change because of the high sensitivity of both to climate and their extensive influence on ecological processes in temperate and cold regions. Climatic warming substantially advanced SOS on the Tibetan Plateau from 1982 to 2011. However, it is unclear why EOS showed little delay despite increasing temperature over this period. Methods We used multiple methods to determine EOS from the satellite-observed normalized-difference vegetation index and investigated the relationships between EOS and its potential drivers on the Tibetan Plateau over 1982-2011. Important findings We found a slight but non-significant delay in regionally averaged EOS of 0.7 day decade(-1) (P = 0.18) and a widespread but weak delaying trend across the Plateau over this period. The inter-annual variations in regionally averaged EOS were driven mainly by pre-season temperature (partial R = 0.62, P < 0.01), and precipitation and insolation showed weak impact on EOS (P > 0.10). Pre-season warming delayed EOS mainly in the eastern half and north-western area of the plateau. In the south-west, EOS was significantly and positively related to SOS, suggesting potentially indirect effects of winter weather conditions on the following autumn's phenology through regulation of spring phenology. EOS was more strongly related with pre-season temperature in colder and wetter areas, reflecting vegetation adaptation to local climate. Interestingly, preseason temperature had weaker delaying effects on EOS for vegetation with a shorter growing season, for which SOS had a stronger control on inter-annual variations in EOS than for vegetation with a longer growing season. This indicates that shorter-season Tibetan Plateau vegetation may have lower plasticity in adjusting the length of its growing season, whenever it begins, and that climate change is more likely to shift the growing season than extend it for that vegetation.
关键词	GREEN-UP DATE LAND-SURFACE PHENOLOGY TIME-SERIES DATA GROWING-SEASON NORTHERN-HEMISPHERE SPRING PHENOLOGY LEAF SENESCENCE TEMPERATURE SENSITIVITY ABOVEGROUND BIOMASS HIGH-LATITUDES
英文关键词	climate change; vegetation phenology; temperature; end of growing season; remote sensing; Tibetan Plateau
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS记录号	WOS:000417977800002
来源期刊	JOURNAL OF PLANT ECOLOGY
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/258891
推荐引用方式 GB/T 7714	Cong, Nan,Shen, Miaogen,Piao, Shilong. Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2017,10(5).
APA	Cong, Nan,Shen, Miaogen,&Piao, Shilong.(2017).Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau.JOURNAL OF PLANT ECOLOGY,10(5).
MLA	Cong, Nan,et al."Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau".JOURNAL OF PLANT ECOLOGY 10.5(2017).