DOI: 10.1111/gcb.12778
论文题名: Changes in autumn vegetation dormancy onset date and the climate controls across temperate ecosystems in China from 1982 to 2010
作者: Yang Y. ; Guan H. ; Shen M. ; Liang W. ; Jiang L.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 2 起始页码: 652
结束页码: 665
语种: 英语
英文关键词: China
; Climate change
; Dormancy onset date
; NDVI
; Remote sensing
; Temperate zone
; Vegetation phenology
Scopus关键词: autumn
; climate change
; dormancy
; NDVI
; phenology
; remote sensing
; spatiotemporal analysis
; temperate environment
; vegetation
; China
; China
; climate
; dormancy
; geography
; season
; temperature
; China
; Climate
; Geography
; Plant Dormancy
; Seasons
; Temperature
英文摘要: Vegetation phenology is a sensitive indicator of the dynamic response of terrestrial ecosystems to climate change. In this study, the spatiotemporal pattern of vegetation dormancy onset date (DOD) and its climate controls over temperate China were examined by analysing the satellite-derived normalized difference vegetation index and concurrent climate data from 1982 to 2010. Results show that preseason (May through October) air temperature is the primary climatic control of the DOD spatial pattern across temperate China, whereas preseason cumulative precipitation is dominantly associated with the DOD spatial pattern in relatively cold regions. Temporally, the average DOD over China's temperate ecosystems has delayed by 0.13 days per year during the past three decades. However, the delay trends are not continuous throughout the 29-year period. The DOD experienced the largest delay during the 1980s, but the delay trend slowed down or even reversed during the 1990s and 2000s. Our results also show that interannual variations in DOD are most significantly related with preseason mean temperature in most ecosystems, except for the desert ecosystem for which the variations in DOD are mainly regulated by preseason cumulative precipitation. Moreover, temperature also determines the spatial pattern of temperature sensitivity of DOD, which became significantly lower as temperature increased. On the other hand, the temperature sensitivity of DOD increases with increasing precipitation, especially in relatively dry areas (e.g. temperate grassland). This finding stresses the importance of hydrological control on the response of autumn phenology to changes in temperature, which must be accounted in current temperature-driven phenological models. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61623
Appears in Collections: 影响、适应和脆弱性
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作者单位: National Centre for Groundwater Research and Training, Adelaide, SA, Australia; School of the Environment, Flinders University, Adelaide, SA, Australia; State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing, China; Key Laboratory of Alpine Ecology and Biodiversity, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; Department of Tourism and Environmental Sciences, Shaanxi Normal University, Xi'an, China
Recommended Citation:
Yang Y.,Guan H.,Shen M.,et al. Changes in autumn vegetation dormancy onset date and the climate controls across temperate ecosystems in China from 1982 to 2010[J]. Global Change Biology,2015-01-01,21(2)