Large-scale remote sensing analysis reveals an increasing coupling of grassland vitality to atmospheric water demand.
EUNIS
Landsat
Sentinel‐2
Vapor Pressure Deficit
drought
habitat
time series
Journal
Global change biology
ISSN: 1365-2486
Titre abrégé: Glob Chang Biol
Pays: England
ID NLM: 9888746
Informations de publication
Date de publication:
May 2024
May 2024
Historique:
revised:
17
04
2024
received:
29
05
2023
accepted:
23
04
2024
medline:
9
5
2024
pubmed:
9
5
2024
entrez:
9
5
2024
Statut:
ppublish
Résumé
Grasslands provide important ecosystem services to society, including biodiversity, water security, erosion control, and forage production. Grasslands are also vulnerable to droughts, rendering their future vitality under climate change uncertain. Yet, the grassland response to drought is not well understood, especially for heterogeneous Central European grasslands. We here fill this gap by quantifying the spatiotemporal sensitivity of grasslands to drought using a novel remote sensing dataset from Landsat/Sentinel-2 paired with climate re-analysis data. Specifically, we quantified annual grassland vitality at fine spatial scale and national extent (Germany) from 1985 to 2021. We analyzed grassland sensitivity to drought by testing for statistically robust links between grassland vitality and common drought indices. We furthermore explored the spatiotemporal variability of drought sensitivity for 12 grassland habitat types given their different biotic and abiotic features. Grassland vitality maps revealed a large-scale reduction of grassland vitality during past droughts. The unprecedented drought of 2018-2019 stood out as the largest multi-year vitality decline since the mid-1980s. Grassland vitality was consistently coupled to drought (R
Substances chimiques
Water
059QF0KO0R
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e17315Subventions
Organisme : Bundesministerium für Bildung und Forschung
ID : 031B0734I
Organisme : Einstein Foundation Berlin and Berlin University Alliance
ID : ERU-2020-609
Informations de copyright
© 2024 The Authors. Global Change Biology published by John Wiley & Sons Ltd.
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