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Delayed autumn leaf senescence date prolongs the growing season length of herbaceous plants on the Qinghai-Tibetan Plateau
Sun, Qingling1,2; Li, Baolin2,3,4; Zhou, Guoyi1,5; Jiang, Yuhao2,3; Yuan, Yecheng2
2020-04-15
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume284Pages:11
Corresponding AuthorLi, Baolin(libl@lreis.ac.cn) ; Zhou, Guoyi(gyzhou@scbg.ac.cn)
AbstractPlant 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.
KeywordPhenological shift Growing season length Leaf senescence date Ground observation data Herbaceous plant Qinghai-Tibetan Plateau
DOI10.1016/j.agrformet.2019.107896
WOS KeywordCLIMATE-CHANGE ; VEGETATION PHENOLOGY ; SPRING PHENOLOGY ; GREEN-UP ; RESPONSES ; TEMPERATURE ; MODEL ; PRODUCTIVITY ; VARIABILITY ; DYNAMICS
Indexed BySCI
Language英语
Funding ProjectNational 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
Funding OrganizationNational 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
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000525817500015
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/133748
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Baolin; Zhou, Guoyi
Affiliation1.Chinese Acad Sci, South China Bot Garden, Guangzhou 510650, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Peoples R China
5.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing 210044, Peoples R China
Recommended Citation
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.
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