Seasonal stabilization effects slowed the greening of the Northern Hemisphere over the last two decades

Rising atmospheric CO₂ and warming spring temperatures increase vegetation growth and the terrestrial carbon sink. However, drought, heat stress, phenology, and resource limitations may stabilize or limit theses projected increases. We investigate the balance between these amplifying and stabilizing...

Celý popis

Uložené v:
Podrobná bibliografia
Vydané v:Nature communications Ročník 16; číslo 1; s. 6287 - 11
Hlavní autori: Zhang, Wen, Smith, William K., Keenan, Trevor F., Dannenberg, Matthew P., Li, Yang, Wang, Songhan, Kimball, John S., Moore, David J. P.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: London Nature Publishing Group UK 08.07.2025
Nature Publishing Group
Nature Portfolio
Predmet:
704/158/2165
704/158/2445
Anomalies
Biosphere
Carbon
Carbon Dioxide - analysis
Carbon sinks
Climate Change
Datasets
Drought
Droughts
Ecosystem
Energy limitation
Evapotranspiration
Forests
Greening
Growth patterns
Heat stress
Heat tolerance
Humanities and Social Sciences
Leaf area
Leaf area index
multidisciplinary
Northern Hemisphere
Plant Development
Plant growth
Plant Leaves - growth & development
Remote sensing
Science
Science (multidisciplinary)
Seasons
Sensors
Soil - chemistry
Soil moisture
Spectroradiometers
Spring
Spring (season)
Stabilization
Standard scores
Temperature
Vegetation
Vegetation growth
Northern Hemisphere
ISSN:2041-1723, 2041-1723
On-line prístup:Získať plný text
Tagy: Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
Popis
Shrnutí:Rising atmospheric CO₂ and warming spring temperatures increase vegetation growth and the terrestrial carbon sink. However, drought, heat stress, phenology, and resource limitations may stabilize or limit theses projected increases. We investigate the balance between these amplifying and stabilizing ecological factors by asking whether enhanced early-season growth leads to continued late-season growth. Using the Moderate Resolution Imaging Spectroradiometer (MODIS) leaf area index (LAI) dataset, we identify three seasonal growth patterns based on early- and peak-season positive LAI anomalies: (1) amplification, where late-season LAI anomalies exceed earlier ones; (2) weak stabilization, where late-season anomalies remain similar or slightly lower; and (3) strong stabilization, where late-season anomalies become negative. Weak and strong stabilization events dominate across 67% and 26% of Northern Hemisphere ecosystems above 30°N, respectively. The absence of any trend in amplifying or stabilizing events suggests stabilizing factors seasonally offset CO₂ and temperature-induced spring greening. Terrestrial biosphere models underestimate strong stabilization and overestimate amplification events. This inconsistency arises from the models’ underestimation late-season LAI sensitivity to precipitation in water-limited regions; overlook negative legacy effects of early enhanced LAI on late-season soil moisture via evapotranspiration losses in energy-limited regions. Our findings suggest water/heat stress and resource limitations limit greening and the land carbon sink. Rising CO₂ and warming enhance vegetation greening, but drought, heat stress, and resource limits constrain this trend. Here, the authors show that within a year, increased early- and peak- season greenness often leads to late-season declines, highlighting water/heat stress limits on greening and the carbon sink.
Bibliografia:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
content type line 23
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-025-61308-w