Parameterization of temperature sensitivity of spring phenology and its application in explaining diverse phenological responses to temperature change

摘要: Existing evidence of plant phenological change to temperature increase demonstrates that the responsiveness is greater at warmer locations and in early-season species. Explanations these findings are scarce not settled. Some studies suggest considering phenology as one functional trait within a plant's life history strategy. In this study, we adapt an existing model derive generalized sensitivity space (SpaceSens) for calculating spring phenophases across species locations. The SpaceSens have three parameters, including onset date (Tp), base threshold (Tb) length period (L) used calculate mean when performing regression analysis between temperature. A case study on first leaf 20 from eastern China shows Tp Tb among different accounts interspecific difference sensitivity. Moreover, lower latitude main reason why there. These results more responsive, plants (especially low latitude) will probably continue diverge other late-season with temperatures warming future.