Enhanced spring temperature sensitivity of carbon emission links to earlier phenology

	Enhanced spring temperature sensitivity of carbon emission links to earlier phenology
	Meng, Fandong; Zhang, Lirong; Zhang, Zhenhua; Jiang, Lili; Wang, Yanfen; Duan, Jichuang; Wang, Qi; Li, Bowen; Liu, Peipei; Hong, Huan
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020
卷号	745
关键词	Phenological sequences Climate warming Temperature sensitivity Carbon source Reciprocal transplant
英文摘要	Phenology has a great effect on the carbon cycle. Significant relationships have been well demonstrated between phenology and photosynthesis. However, few studies have been undertaken to characterize relationships between phenology and ecosystem respiration (Re). We conducted a reciprocal transplant experiment among three elevations for two-years to measure Re over six phenological sequences throughout the growing seasons. Our results showed that changes in phenological duration were mainly determined by the onset of phenology, as one day advance of phenological onset could lengthen 0.13 days of phenological duration. Advances in early spring phenophases (i.e., first leaf-out, first bud/boot-set and first flowering) under warming strengthened the temperature sensitivity of Re. However, the late phenophases (i.e., first seeding-set, first post-fruiting vegetation and first leaf-coloring) had non-significant relationships with Re. In total, after pooling all the data, one day advance of phenophases would increase Re by 223% under warming. In particular. Re would increase by 29.12% with an advance of phenophases by 8.46 days of under a 1.5 degrees C warming scenario. Our analysis of the coupling between temperature/moisture-phenology-Re may further supplement evidence that warmer spring temperature increases carbon emission by advancing early phenophases. This points to a faster and easier way to investigate how aboveground functional traits (phenology) affect unseen functional traits (Re) on the Tibetan Plateau. (C) 2020 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://210.75.249.4/handle/363003/60215]
专题	西北高原生物研究所_中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Meng, Fandong,Zhang, Lirong,Zhang, Zhenhua,et al. Enhanced spring temperature sensitivity of carbon emission links to earlier phenology[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,745.
APA	Meng, Fandong.,Zhang, Lirong.,Zhang, Zhenhua.,Jiang, Lili.,Wang, Yanfen.,...&Wang, Shiping.(2020).Enhanced spring temperature sensitivity of carbon emission links to earlier phenology.SCIENCE OF THE TOTAL ENVIRONMENT,745.
MLA	Meng, Fandong,et al."Enhanced spring temperature sensitivity of carbon emission links to earlier phenology".SCIENCE OF THE TOTAL ENVIRONMENT 745(2020).