title: Earlier-season vegetation has greater temperature sensitivity of spring phenology in northern hemisphere.
abstract: In recent decades, satellite-derived start of vegetation growing season (SOS) has advanced in many northern temperate and boreal regions. Both the magnitude of temperature increase and the sensitivity of the greenness phenology to temperature-the phenological change per unit temperature-can contribute the advancement. To determine the temperature-sensitivity, we examined the satellite-derived SOS and the potentially effective pre-season temperature (T eff) from 1982 to 2008 for vegetated land between 30°N and 80°N. Earlier season vegetation types, i.e., the vegetation types with earlier SOSmean (mean SOS for 1982-2008), showed greater advancement of SOS during 1982-2008. The advancing rate of SOS against year was also greater in the vegetation with earlier SOSmean even the T eff increase was the same. These results suggest that the spring phenology of vegetation may have high temperature sensitivity in a warmer area. Therefore it is important to consider temperature-sensitivity in assessing broad-scale phenological responses to climatic warming. Further studies are needed to explore the mechanisms and ecological consequences of the temperature-sensitivity of start of growing season in a warming climate.
authors: Institute of Tibetan Plateau Research, Chinese Academy of Sciences, 4A Datun Road, Chaoyang District, Beijing, China ; Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Onogawa, Tsukuba, Japan.
authors: Miaogen
authors: M
authors: Shen
authors: Center for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Onogawa, Tsukuba, Japan.
authors: Yanhong
authors: Y
authors: Tang
authors: State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China.
authors: Jin
authors: J
authors: Chen
authors: Department of Geological Sciences, Brown University, Providence, Rhode Island, United States of America.
authors: Xi
authors: X
authors: Yang
authors: State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, China.
authors: Cong
authors: C
authors: Wang
authors: College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China.
authors: Xiaoyong
authors: X
authors: Cui
authors: Institute of Tibetan Plateau Research, Chinese Academy of Sciences, 4A Datun Road, Chaoyang District, Beijing, China.
authors: Yongping
authors: Y
authors: Yang
authors: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.
authors: Lijian
authors: L
authors: Han
authors: State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China.
authors: Le
authors: L
authors: Li
authors: School of Geographical Science and Planning, Sun Yat-Sen University, Guangzhou, China.
authors: Jianhui
authors: J
authors: Du
authors: Institute of Tibetan Plateau Research, Chinese Academy of Sciences, 4A Datun Road, Chaoyang District, Beijing, China.
authors: Gengxin
authors: G
authors: Zhang
authors: Department of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, China.
authors: Nan
authors: N
authors: Cong
mesh_terms: D002980:Climate; D017753:Ecosystem; D057232:Global Warming; D063245:Plant Development; D012621:Seasons; D013696:Temperature