期刊
AGRICULTURAL AND FOREST METEOROLOGY
卷 256, 期 -, 页码 526-533出版社
ELSEVIER
DOI: 10.1016/j.agrformet.2018.04.012
关键词
Spring phenology; Climate warming; Geographical variability; Chilling; Preseason sensitivity; Temperate tree
资金
- National Natural Science Foundation of China [31600392, 31570584]
- 100 Talents Program of the Chinese Academy of Sciences (CAS) [Y421081001]
- Natural Science Foundation of Guangdong Province [2016A030310013]
- CAS/SAFEA International Partnership Program for Creative Research Teams
- South China Botanical Garden of the CAS [201502]
- Academy of Finland Centre of Excellence program [218094, 255576, 286685]
The occurrence of species-specific phenological timing among populations over broad geographical areas may have converged or diverged with recent climatic warming. The changes in spatial geographical variability of phenological timing may affect the degree of species overlap, and thus have profound ecological consequences in the context of global change. The potential converging or diverging has been little explored, although advancements of spring phenology due to climate warming have been observed worldwide in the last decades. Here we addressed this question through analyzing temporal changes in the geographical variability for 22 spring phonological events (both leaf-out and flowering phenology) of 16 temperate tree species in Europe. We found that the species-specific geographical variability of spring phenological timing decreased during 1980-2013, indicating that phenological differences among populations over a large geographical area decreased. The reduced geographical variability is mainly due to the fact that populations in cold sites had higher advancement rates and exhibited stronger responses to elevated temperature than those in warm sites. Warming induced convergence of spring phonology in temperate trees over a large geographical area may affect the activities of other species in the food chain through trophic mismatch, and may ultimately affect the ecosystem carbon and nutrient cycles that are driven through functioning of the food chain.
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