Variations in the temperature sensitivity of spring leaf phenology from 1978 to 2014 in Mudanjiang, China
Dai, Junhu1,2; Xu, Yunjia1,2; Wang, Huanjiong1; Alatalo, Juha3; Tao, Zexing1,2; Ge, Quansheng1
Corresponding AuthorDai, Junhu(daijh@igsnrr.ac.cn) ; Ge, Quansheng(geqs@igsnrr.ac.cn)
AbstractContinuous long-term temperature sensitivity (S-T) of leaf unfolding date (LUD) and main impacting factors in spring in the period 1978-2014 for 40 plant species in Mudanjiang, Heilongjiang Province, Northeast China, were analyzed by using observation data from the China Phenological Observation Network (CPON), together with the corresponding meteorological data from the China Meteorological Data Service Center. Temperature sensitivities, slopes of the regression between LUD and mean temperature during the optimum preseason (OP), were analyzed using 15-year moving window to determine their temporal trends. Major factors impacting S-T were then chosen and evaluated by applying a random sampling method. The results showed that LUD was sensitive to mean temperature in a defined period before phenophase onset for all plant species analyzed. Over the period 1978-2014, the mean S-T of LUD for all plant species was -3.2 +/- 0.49days degrees C-1. The moving window analysis revealed that 75% of species displayed increasing S-T of LUD, with 55% showing significant increases (P<0.05). S-T for the other 25% exhibited a decreasing trend, with 17% showing significant decreases (P<0.05). On average, S-T increased by 16%, from -2.8 +/- 0.83days degrees C-1 during 1980-1994 to -3.30 +/- 0.65days degrees C-1 during 2000-2014. For species with later LUD and longer OP, S-T tended to increase more, while species with earlier LUD and shorter OP tended to display a decreasing S-T. The standard deviation of preseason temperature impacted the temporal variation in S-T. Chilling conditions influenced S-T for some species, but photoperiod limitation did not have significant or coherent effects on changes in S-T.
KeywordPlant phenology Leaf unfolding date Temperature sensitivity Temperature impact Northeast China
Indexed BySCI
Funding ProjectNational Natural Science Foundation of China[41601047] ; National Natural Science Foundation of China[41771056] ; National Major Instruments Development Project[41427805]
Funding OrganizationNational Natural Science Foundation of China ; National Major Instruments Development Project
WOS Research AreaBiophysics ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Physiology
WOS SubjectBiophysics ; Environmental Sciences ; Meteorology & Atmospheric Sciences ; Physiology
WOS IDWOS:000467487500002
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorDai, Junhu; Ge, Quansheng
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Qatar Univ, Coll Arts & Sci, Dept Biol & Environm Sci, Doha, Qatar
Recommended Citation
GB/T 7714
Dai, Junhu,Xu, Yunjia,Wang, Huanjiong,et al. Variations in the temperature sensitivity of spring leaf phenology from 1978 to 2014 in Mudanjiang, China[J]. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,2019,63(5):569-577.
APA Dai, Junhu,Xu, Yunjia,Wang, Huanjiong,Alatalo, Juha,Tao, Zexing,&Ge, Quansheng.(2019).Variations in the temperature sensitivity of spring leaf phenology from 1978 to 2014 in Mudanjiang, China.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,63(5),569-577.
MLA Dai, Junhu,et al."Variations in the temperature sensitivity of spring leaf phenology from 1978 to 2014 in Mudanjiang, China".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 63.5(2019):569-577.
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