What explains the year-to-year variation in growing season timing of boreal black spruce forests?

Mariam El-Amine,Alexandre Roy,Franziska Koebsch,Jennifer L. Baltzer,Alan Barr,Andrew Black,Hiroki Ikawa,Hiroki Iwata,Hideki Kobayashi,Masahito Ueyama,Oliver Sonnentag

Agricultural and Forest Meteorology（2022）

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摘要

•We examined the controls of growing season (GPPGS) in boreal forests.•Temperature and green-up explain the start of GPPGS in permafrost-free stands.•The selected predictors cannot explain the start of GPPGS in permafrost stands.•Soil water content and continuous snowpack formation explain the end of GPPGS.

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关键词

Carbon dioxide,Photosynthesis,Growing season,Boreal forest,Permafrost,Eddy covariance

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