Delayed autumn leaf senescence date prolongs the growing season length of herbaceous plants on the Qinghai-Tibetan Plateau

doi:10.1016/j.agrformet.2019.107896

	Delayed autumn leaf senescence date prolongs the growing season length of herbaceous plants on the Qinghai-Tibetan Plateau
	Sun, Qingling 3,4; Li, Baolin 1,4,5; Zhou, Guoyi 2,3; Jiang, Yuhao 4,5; Yuan, Yecheng 4
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2020-04-15
卷号	284 页码:11
关键词	Phenological shift Growing season length Leaf senescence date Ground observation data Herbaceous plant Qinghai-Tibetan Plateau
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2019.107896
通讯作者	Li, Baolin(libl@lreis.ac.cn) ; Zhou, Guoyi(gyzhou@scbg.ac.cn)
英文摘要	Plant phenological shifts on the Qinghai-Tibetan Plateau (QTP) have been a hot research topic during the recent decade. Most previous studies based on remote sensing data suggest that earlier spring green-up is the main contributor to the prolonged vegetation growing season on the QTP. Given the large uncertainties of satellite-derived phenology, this study collected a large number (1455+ records) of long-term and continuous ground phenological observation data across the QTP. Based on these data, we conducted comprehensive analyses of temporal changes in spring green-up date (GUD), autumn leaf senescence date (LSD), and growing season length (GSL) of herbaceous plants from 1981 to 2017 through ordinary least squares regression and meta-analysis, and evaluated the relative contribution of shifts in GUD and LSD to change in GSL using the C-index. Results showed that the overall trends of GUD, LSD, and GSL insignificantly advanced at a rate of -0.17 days/decade, significantly delayed at a rate of 5.29 days/decade, and significantly lengthened at a rate of 5.46 days/decade, respectively. On average, the relative contribution of LSD shift to GSL change was 69.3% which was more than twice that of GUD shift (30.7%). Therefore, it was mainly the delayed LSD, rather than an advanced GUD, that prolonged GSL of QTP herbaceous plants, which was contrary to the prevailing conclusion reported by studies based on remote sensing data. Besides, among three functional groups of herbaceous plants, we found that change trends and patterns of the growing seasons seemed to be more favorable to the growth of forbs, which might shift community structure and further influence ecosystem function. Our study suggests that the importance of autumn phenology has been underestimated on the QTP, and more attention should be paid to the shift in autumn phenology and its influences on ecosystem structure and function under global warming.
资助项目	National Key Research and Development Plan of China[2016YFC0500205] ; Innovative Talents Recruitment Program of Chinese Academy of Sciences[Y621231001] ; China Postdoctoral Science Foundation[2019M653109] ; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS
WOS关键词	CLIMATE-CHANGE ; VEGETATION PHENOLOGY ; SPRING PHENOLOGY ; GREEN-UP ; RESPONSES ; TEMPERATURE ; MODEL ; PRODUCTIVITY ; VARIABILITY ; DYNAMICS
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000525817500015
资助机构	National Key Research and Development Plan of China ; Innovative Talents Recruitment Program of Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133747]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Baolin; Zhou, Guoyi
作者单位	1.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing 210044, Peoples R China 3.Chinese Acad Sci, South China Bot Garden, Guangzhou 510650, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun, Qingling,Li, Baolin,Zhou, Guoyi,et al. Delayed autumn leaf senescence date prolongs the growing season length of herbaceous plants on the Qinghai-Tibetan Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2020,284:11.
APA	Sun, Qingling,Li, Baolin,Zhou, Guoyi,Jiang, Yuhao,&Yuan, Yecheng.(2020).Delayed autumn leaf senescence date prolongs the growing season length of herbaceous plants on the Qinghai-Tibetan Plateau.AGRICULTURAL AND FOREST METEOROLOGY,284,11.
MLA	Sun, Qingling,et al."Delayed autumn leaf senescence date prolongs the growing season length of herbaceous plants on the Qinghai-Tibetan Plateau".AGRICULTURAL AND FOREST METEOROLOGY 284(2020):11.