NDVI and vegetation phenology dynamics under the influence of sunshine duration on the Tibetan plateau

dc.contributorOhio State Univ
dc.contributorChinese Univ Hong Kong
dc.contributorUniv Elect Sci &Technol China
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.creatorWang, Hongshuo
dc.creatorLiu, Desheng
dc.creatorLin, Hui
dc.creatorMontenegro, Alvaro [UNESP]
dc.creatorZhu, Xiaolin
dc.date2015-10-21T20:13:35Z
dc.date2015-10-21T20:13:35Z
dc.date2015-04-01
dc.date.accessioned2023-09-12T06:47:08Z
dc.date.available2023-09-12T06:47:08Z
dc.identifierInternational Journal Of Climatology, v. 35, n. 5, p. 687-698, 2015.
dc.identifier0899-8418
dc.identifierhttp://hdl.handle.net/11449/129023
dc.identifier10.1002/joc.4013
dc.identifierWOS:000352557700004
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8778365
dc.descriptionClimate change has significantly influenced vegetation dynamics on the Tibetan Plateau (TP). Past research mainly focused on vegetation responses to temperature variation and water stress, but the influence of sunshine duration on NDVI and vegetation phenology on the TP is not well understood. In this study, NDVI time series from 1982-2008 were used to retrieve spatiotemporal vegetation dynamics on the TP. Empirical orthogonal function (EOF) analysis was conducted to understand the spatiotemporal variations of NDVI. The Start of Season (SOS) was estimated from NDVI time series with a local threshold method. The first EOF, accounting for 35.1% of NDVI variations on the TP, indicates that NDVI variations are larger in areas with shorter sunshine duration. The needle-leaved forest and shrub in the southeastern TP are more sensitive to sunshine duration anomalies (p < 0.01) than broad-leaved forest, steppe, and meadow due to spatial and altitudinal distribution of sunshine duration and vegetation types. The decrease in sunshine duration for the growing season on the TP has resulted in a decreased NDVI trend in some areas of southeastern TP (p ranging from 0.32-0.05 with threshold ranging from 0.05 to 0.25) in spite of the overall NDVI increase. SOS dynamics in most parts of the TP were mainly related to temperature variability, with precipitation and sunshine duration playing a role in a few regions. This study enhances our understanding of vegetation responses to climatic change on the TP.
dc.descriptionNSF US
dc.descriptionHong Kong ITF, Hong Kong
dc.descriptionUnesp's international visiting scholar program
dc.descriptionOhio State Univ, Dept Geog, Columbus, OH 43210 USA
dc.descriptionChinese Univ Hong Kong, Inst Space &Earth Informat Sci, Hong Kong, Hong Kong, Peoples R China
dc.descriptionUniv Elect Sci &Technol China, Sch Resources &Environm, Chengdu 610054, Peoples R China
dc.descriptionUnesp Univ Estadual Paulista, Sao Vicente, SP, Brazil
dc.descriptionUnesp Univ Estadual Paulista, Sao Vicente, SP, Brazil
dc.descriptionNSF US: 07-598
dc.descriptionHong Kong ITF, Hong Kong: ITS/042/12FP
dc.format687-698
dc.languageeng
dc.publisherWiley-Blackwell
dc.relationInternational Journal Of Climatology
dc.relation3.100
dc.relation1,797
dc.rightsAcesso restrito
dc.sourceWeb of Science
dc.subjectempirical orthogonal function
dc.subjectNDVI
dc.subjectsunshine duration
dc.subjectTibetan Plateau
dc.subjectvegetation phenology
dc.titleNDVI and vegetation phenology dynamics under the influence of sunshine duration on the Tibetan plateau
dc.typeArtigo


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