The influence of local spring temperature variance on temperature sensitivity of spring phenology.

摘要: The impact of climate warming on the advancement plant spring phenology has been heavily investigated over last decade and there exists great variability among plants in their phenological sensitivity to temperature. However, few studies have explicitly linked local variance. Here, we set out test hypothesis that strength declines with increased temperature variance, by synthesizing results across ground observations. We assemble ground-based long-term (20-50 years) database (PEP725 database) corresponding dataset. find a prevalent decline increasing variance at species level from It suggests might be less likely track climatic locations larger This related possibility frost risk could higher adapt avoid this relying more other cues (e.g., high chill requirements, photoperiod) for phenology, thus suppressing responses warming. study illuminates is an understudied source highlight necessity incorporating factor improve predictability anthropogenic change future studies.