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Zheng, Zhoutao; Zhu, Wenquan; Chen, Guangsheng; Jiang, Nan; Fan, Deqin; Zhang, Donghai
Agricultural and forest meteorology, 06/2016, Letnik: 223, Številka: CJournal Article
•The shift of spring-summer phenology in the Qinghai-Tibetan Plateau was analyzed.•A continuous advancement in spring-summer phenology during 1981–2011 was found.•Diverse advancing rates were observed for different vegetation types and conditions.•Varied phenology shifts were determined by the sensitivity to temperature change.•Increased precipitation could advance spring-summer phenology. The Qinghai-Tibetan Plateau (QTP) is more vulnerable and sensitive to climate change than many other regions worldwide because of its high altitude, permafrost geography, and harsh physical environment. As a sensitive bio-indicator of climate change, plant phenology shift in this region has been intensively studied during the recent decades, primarily based on satellite-retrieved data. However, great controversy still exists regarding the change in direction and magnitudes of spring-summer phenology. Based on a large number (11,000+ records) of long-term and continuous ground observational data for various plant species, our study intended to more comprehensively assess the changing trends of spring-summer phenology and their relationships with climatic change across the QTP. The results indicated a continuous advancement (−2.69daysdecade−1) in spring-summer phenology from 1981 to 2011, with an even more rapid advancement during 2000–2011 (−3.13daysdecade−1), which provided new field evidence for continuous advancement in spring-summer phenology across the QTP. However, diverse advancing rates in spring-summer phenology were observed for different vegetation types, thermal conditions, and seasons. The advancing trends matched well with the difference in sensitivity of spring-summer phenology to increasing temperature, implying that the sensitivity of phenology to temperature was one of the major factors influencing spring-summer phenology shifts. Besides, increased precipitation could advance the spring-summer phenology. The response of spring-summer phenology to temperature tended to be stronger from east to west across all species, while the response to precipitation showed no consistent spatial pattern.
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Vir: Osebne bibliografije
in: SICRIS
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