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

Wang, Huanjiong; Ge, Quansheng; Rutishauser, This; Dai, Yuxiao; Dai, Junhu (2015). Parameterization of temperature sensitivity of spring phenology and its application in explaining diverse phenological responses to temperature change. Scientific Reports, 5(8833), p. 8833. Nature Publishing Group 10.1038/srep08833

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Existing evidence of plant phenological change to temperature increase demonstrates that the phenological responsiveness is greater at warmer locations and in early-season plant species. Explanations of these findings are scarce and 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 phenological model to derive a generalized sensitivity in space (SpaceSens) model for calculating temperature sensitivity of spring plant phenophases across species and locations. The SpaceSens model have three parameters, including the temperature at the onset date of phenophases (Tp), base temperature threshold (Tb) and the length of period (L) used to calculate the mean temperature when performing regression analysis between phenology and temperature. A case study on first leaf date of 20 plant species from eastern China shows that the change of Tp and Tb among different species accounts for interspecific difference in temperature sensitivity. Moreover, lower Tp at lower latitude is the main reason why spring phenological responsiveness is greater there. These results suggest that spring phenophases of more responsive, early-season plants (especially in low latitude) will probably continue to diverge from the other late-season plants with temperatures warming in the future.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geography > Physical Geography > Unit Climatology
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Institute of Geography

UniBE Contributor:

Rutishauser, This

Subjects:

900 History > 910 Geography & travel

ISSN:

2045-2322

Publisher:

Nature Publishing Group

Language:

English

Submitter:

Monika Wälti-Stampfli

Date Deposited:

30 Mar 2015 12:02

Last Modified:

26 Jun 2016 02:00

Publisher DOI:

10.1038/srep08833

BORIS DOI:

10.7892/boris.66239

URI:

https://boris.unibe.ch/id/eprint/66239

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