Increased atmospheric vapor pressure deficit reduces global vegetation growth.
Sci Adv
; 5(8): eaax1396, 2019 08.
Article
em En
| MEDLINE
| ID: mdl-31453338
ABSTRACT
Atmospheric vapor pressure deficit (VPD) is a critical variable in determining plant photosynthesis. Synthesis of four global climate datasets reveals a sharp increase of VPD after the late 1990s. In response, the vegetation greening trend indicated by a satellite-derived vegetation index (GIMMS3g), which was evident before the late 1990s, was subsequently stalled or reversed. Terrestrial gross primary production derived from two satellite-based models (revised EC-LUE and MODIS) exhibits persistent and widespread decreases after the late 1990s due to increased VPD, which offset the positive CO2 fertilization effect. Six Earth system models have consistently projected continuous increases of VPD throughout the current century. Our results highlight that the impacts of VPD on vegetation growth should be adequately considered to assess ecosystem responses to future climate conditions.
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Vapor
/
Monitoramento Ambiental
/
Pressão de Vapor
/
Desenvolvimento Vegetal
/
Imagens de Satélites
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
Sci Adv
Ano de publicação:
2019
Tipo de documento:
Article