Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau

doi:10.1093/jpe/rtw084

	Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau
	Piao, SL (Piao, Shilong)1,2; Cong, N (Cong, Nan)1; Shen, MG (Shen, Miaogen)1,2; Shen, MG
刊名	JOURNAL OF PLANT ECOLOGY
	2017
卷号	10 期号:5 页码:744-752
关键词	Green-up Date Northern-hemisphere Vegetation Land-surface Phenology Time-series Data Past 3 Decades Growing-season Spring Phenology Leaf Senescence Temperature Sensitivity Aboveground Biomass
DOI	10.1093/jpe/rtw084
文献子类	Article
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.
学科主题	普通生物学
WOS研究方向	Plant Sciences; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000417977800002
内容类型	期刊论文
源URL	[http://ir.itpcas.ac.cn/handle/131C11/7967]
专题	青藏高原研究所_图书馆
通讯作者	Shen, MG
作者单位	1.Chinese Acad Sci, Key Lab Alpine Ecol & Biodivers, Inst Tibetan Plateau Res, 16 Lincui Rd, Beijing 100101, Peoples R China. 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, 16 Lincui Rd, Beijing 100101, Peoples R China.
推荐引用方式 GB/T 7714	Piao, SL ,Cong, N ,Shen, MG ,et al. Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau[J]. JOURNAL OF PLANT ECOLOGY,2017,10(5):744-752.
APA	Piao, SL ,Cong, N ,Shen, MG ,&Shen, MG.(2017).Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau.JOURNAL OF PLANT ECOLOGY,10(5),744-752.
MLA	Piao, SL ,et al."Spatial variations in responses of vegetation autumn phenology to climate change on the Tibetan Plateau".JOURNAL OF PLANT ECOLOGY 10.5(2017):744-752.