Increasing terrestrial ecosystem carbon release in response to autumn cooling and warming
Artikel i vetenskaplig tidskrift, 2022

Part of the Northern Hemisphere has experienced widespread autumn cooling during the most recent decades despite overall warming, but how this contrasting temperature change has influenced the ecosystem carbon exchange remains unclear. Here, we show that autumn cooling has occurred over about half of the area north of 25° N since 2004, producing a weak cooling trend over the period 2004–2018. Multiple lines of evidence suggest an increasing net CO2 release in autumn during 2004–2018. In cooling areas, the increasing autumn CO2 release is due to the larger decrease of gross primary productivity (GPP) growth than total ecosystem respiration (TER) growth suppressed by cooling. In the warming areas, TER increased more than GPP because the warming and wetting conditions are more favourable for TER growth than GPP increase. Despite the opposite temperature trends, there has been a systematic increase in ecosystem carbon release across the Northern Hemisphere middle and high latitudes.

Författare

Rui Tang

Beijing Normal University

Bin He

Beijing Normal University

Hans Chen

Lunds universitet

Deliang Chen

Göteborgs universitet

Yaning Chen

Chinese Academy of Sciences

Yongsuo H. Fu

Beijing Normal University

Wenping Yuan

Beijing Normal University

Baofu Li

Qufu Normal University

Zhi Li

Chinese Academy of Sciences

Lanlan Guo

Beijing Normal University

Xingming Hao

Chinese Academy of Sciences

Liying Sun

Chinese Academy of Sciences

Huiming Liu

Ministry of Ecology and Environment Center for Satellite Application on Ecology and Environment

Cheng Sun

Beijing Normal University

Yang Yang

Beijing Normal University at Zhuhai

Nature Climate Change

1758-678X (ISSN) 1758-6798 (eISSN)

Vol. 12 4 380-385

Ämneskategorier

Meteorologi och atmosfärforskning

Ekologi

Naturgeografi

Klimatforskning

Fundament

Grundläggande vetenskaper

DOI

10.1038/s41558-022-01304-w

Mer information

Senast uppdaterat

2024-01-24