文献类型：期刊文献

英文题名：Temperature sensitivity of leaf flushing in 12 common woody species in eastern China

作者：Yu, Peiyang[1] Meng, Ping[2] Tong, Xiaojuan[1] Zhang, Yingjie[1] Li, Jun[3] Zhang, Jingru[1] Liu, Peirong[1]

第一作者：Yu, Peiyang

通信作者：Tong, XJ[1];Zhang, YJ[1]

机构：[1]Beijing Forestry Univ, Sch Ecol & Nat Conservat, Beijing 100083, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat, State Forestry Adm, Beijing 100091, Peoples R China;[3]Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China

年份：2023

卷号：861

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;EI(收录号：20224913215668);Scopus(收录号：2-s2.0-85143286962);WOS:【SCI-EXPANDED(收录号:WOS:000991825200001)】；

基金：Acknowledgements This study was sponsored by the National Key R & D Program of China (2020YFA0608101) and the National Natural Science Foundation of China (32271875; 31872703) .

语种：英文

外文关键词：Temperature sensitivity; Leaf flushing date; Latitude; Preseason temperature

摘要：Leaf phenology is one of the most reliable indicators of global warming in temperate regions because it is highly sensitive to temperatures. Temperature sensitivity (ST) is defined as the values of changed days of leaf flushing date (LUD) per degree increase in temperatures. Climate warming substantially advanced LUD in the temperate region, but its effect on ST of LUD is still not clear. We used spring phenological records of 12 woody plants in eastern China in the years of 1983-2014 to explore temporal and spatial changes of LUD and ST. Furthermore, we compared the difference of ST and preseason temperatures in two periods (1983-1997 and 2000-2014), and explored the main factors regulating ST. The results showed that the average LUD significantly advanced (-2.7 days per decade). The mean LUD over the period 1983-2014 was in day of the year (DOY) 87 +/- 7 across sites and species for the early leaf flushing species (EFS), and mean DOY 102 +/- 5 for the late leaf flushing species (LFS). LUD was earlier in low latitude than that in high latitude. ST of Armeniaca vulgaris was the most sensitive to temperature across all sites (-3.66 d degrees C-1), while Firmiana simplex was the most insensitive (-2.37 d degrees C-1). LUD of EFS was more sensitive to temperature warming than that of LFS. At the same site, LUD of EFS would advance more obviously than that of LFS under global warming. For all species, ST decreased significantly with shorter preseason length and warmer temperatures at the preseason end. Our results had demonstrated a strong relationship between ST and the preseason length (mean temperature at the preseason end).