Divergent shifts in flowering phenology of herbaceous plants on the warming Qinghai-Tibetan plateau

doi:10.1016/j.agrformet.2021.108502

	Divergent shifts in flowering phenology of herbaceous plants on the warming Qinghai-Tibetan plateau
	Jiang, Yuhao 1,3; Li, Baolin 1,2,3; Yuan, Yecheng 1; Sun, Qingling 4; Zhang, Tao 5; Liu, Yan 1,3; Li, Ying 1,3; Li, Rui 1,3
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2021-09-15
卷号	307 页码:14
关键词	Herbaceous plants Flowering phenology Global warming Vernalization Flower preformation Qinghai-Tibetan plateau
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2021.108502
通讯作者	Li, Baolin(libl@lreis.ac.cn)
英文摘要	Both advanced and delayed shifts of different magnitude in flowering phenology, based on limited controlled experiments and ground-based observational studies, have been reported on the Qinghai-Tibetan Plateau (QTP). To clarify flowering phenological changes, we collected 1646 ground-observed phenological records of 21 species, from 27 stations, for 78 time series, and daily average air temperature data from 1983 to 2017 on the QTP. Trends in the first flowering date (FFD) and changes with temperature increase were analyzed using regression models. The FFD of early flowering time series showed an overall trend for significant advance (-0.371 +/- 0.149 days/year, p < 0.001), whereas the mid-to-late-flowering showed a delayed trend (0.158 +/- 0.193 days/year, p = 0.108). This finding is in contrast with the stable trend for early flowering species and the advanced trend for midsummer and late-flowering species in high latitude and Arctic regions, where the low-temperature environment is similar. The growing degree days from 1 January to the day of the observed occurrence of the FFD for early flowering time series kept stable (p = 0.531) and FFD showed a positive regression with chilling days; however, the growing degree days of mid-to-late-flowering time series increased significantly at a rate of 5.375 +/- 2.519 degrees C-days/year (p < 0.001), indicating the limitation on FFD from other related climatic factors except for forcing temperature may strengthen, and FFD showed no relationship with chilling days. The mid-tolate-flowering time series showed vernalization sensitivity in the spring of the flowering year, whereas the early flowering time series did not. This indicated that retarded vernalization completion may be responsible for the delayed flowering phenology of mid-to-late-flowering species. The FFD of early flowering species, with flower preformation in the preceding autumn, was mainly controlled by forcing temperature in spring; decreased chilling days indicating warmer winter were also beneficial for development and fitness of preformed floral organs, and thus, temperature increase significantly advanced the FFD. These findings suggest that divergent flowering phenology shifts may alter the species composition and ecosystem services of alpine ecosystems, causing challenges in grassland management.
资助项目	National Key Research and Development Plan of China[2016YFC0500205] ; National Natural Science Foundation of China[41701475] ; Ministry of Science and Technology, China
WOS关键词	VEGETATION GREEN-UP ; CLIMATE-CHANGE ; REPRODUCTIVE PHENOLOGY ; GROWING-SEASON ; RESPONSES ; ALPINE ; TEMPERATURE ; REQUIREMENTS ; PRECIPITATION ; TRAITS
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000682515100060
资助机构	National Key Research and Development Plan of China ; National Natural Science Foundation of China ; Ministry of Science and Technology, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/164679]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Baolin
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai 519082, Peoples R China 5.Iowa State Univ, Dept Geol & Atmospher Sci, Ames, IA USA
推荐引用方式 GB/T 7714	Jiang, Yuhao,Li, Baolin,Yuan, Yecheng,et al. Divergent shifts in flowering phenology of herbaceous plants on the warming Qinghai-Tibetan plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,307:14.
APA	Jiang, Yuhao.,Li, Baolin.,Yuan, Yecheng.,Sun, Qingling.,Zhang, Tao.,...&Li, Rui.(2021).Divergent shifts in flowering phenology of herbaceous plants on the warming Qinghai-Tibetan plateau.AGRICULTURAL AND FOREST METEOROLOGY,307,14.
MLA	Jiang, Yuhao,et al."Divergent shifts in flowering phenology of herbaceous plants on the warming Qinghai-Tibetan plateau".AGRICULTURAL AND FOREST METEOROLOGY 307(2021):14.