气候变化领域集成服务门户(CCPortal): Strong impacts of daily minimum temperature on the green-up date and summer greenness of the Tibetan Plateau

CCPortal

DOI	10.1111/gcb.13301
	Strong impacts of daily minimum temperature on the green-up date and summer greenness of the Tibetan Plateau
	Shen, Miaogen; Piao, Shilong; Chen, Xiaoqiu; An, Shuai; Fu, Yongshuo H.; Wang, Shiping; Cong, Nan; Janssens, Ivan A.
通讯作者	Shen, MG ; Piao, SL (通讯作者)
发表日期	2016
ISSN	1354-1013
EISSN	1365-2486
起始页码	3057
结束页码	3066
卷号	22 期号:9
英文摘要	Understanding vegetation responses to climate change on the Tibetan Plateau (TP) helps in elucidating the land-atmosphere energy exchange, which affects air mass movement over and around the TP. Although the TP is one of the world's most sensitive regions in terms of climatic warming, little is known about how the vegetation responds. Here, we focus on how spring phenology and summertime greenness respond to the asymmetric warming, that is, stronger warming during nighttime than during daytime. Using both insitu and satellite observations, we found that vegetation green-up date showed a stronger negative partial correlation with daily minimum temperature (T-min) than with maximum temperature (T-max) before the growing season (preseason' henceforth). Summer vegetation greenness was strongly positively correlated with summer T-min, but negatively with T-max. A 1-K increase in preseason T-min advanced green-up date by 4days (P<0.05) and in summer enhanced greenness by 3.6% relative to the mean greenness during 2000-2004 (P<0.01). In contrast, increases in preseason T-max did not advance green-up date (P>0.10) and higher summer T-max even reduced greenness by 2.6%K-1 (P<0.05). The stimulating effects of increasing T-min were likely caused by reduced low temperature constraints, and the apparent negative effects of higher T-max on greenness were probably due to the accompanying decline in water availability. The dominant enhancing effect of nighttime warming indicates that climatic warming will probably have stronger impact on TP ecosystems than on apparently similar Arctic ecosystems where vegetation is controlled mainly by T-max. Our results are crucial for future improvements of dynamic vegetation models embedded in the Earth System Models which are being used to describe the behavior of the Asian monsoon. The results are significant because the state of the vegetation on the TP plays an important role in steering the monsoon.
关键词	SPRING PHENOLOGY CLIMATE-CHANGE PLANT-GROWTH DAYTIME EVAPOTRANSPIRATION LATITUDES NETWORK DATASET TRENDS CHINA
英文关键词	alpine vegetation; asymmetric warming; climate change; plant phenology; Tibetan Plateau; vegetation growth
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000381077300010
来源期刊	GLOBAL CHANGE BIOLOGY
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/258755
推荐引用方式 GB/T 7714	Shen, Miaogen,Piao, Shilong,Chen, Xiaoqiu,et al. Strong impacts of daily minimum temperature on the green-up date and summer greenness of the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2016,22(9).
APA	Shen, Miaogen.,Piao, Shilong.,Chen, Xiaoqiu.,An, Shuai.,Fu, Yongshuo H..,...&Janssens, Ivan A..(2016).Strong impacts of daily minimum temperature on the green-up date and summer greenness of the Tibetan Plateau.GLOBAL CHANGE BIOLOGY,22(9).
MLA	Shen, Miaogen,et al."Strong impacts of daily minimum temperature on the green-up date and summer greenness of the Tibetan Plateau".GLOBAL CHANGE BIOLOGY 22.9(2016).