A human-driven decline in global burned area - Archive ouverte HAL Access content directly
Journal Articles Science Year : 2017

A human-driven decline in global burned area

(1, 2) , (1) , (3) , (2) , (4) , (5) , (6) , (1) , (7) , (8) , (9) , (10) , (8) , (11) , (12) , (13) , (14) , (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C. Morton
F. Li
J. R. Melton

Abstract

Fire is an essential Earth system process that alters ecosystem and atmospheric composition. Here we assessed long-term fire trends using multiple satellite data sets. We found that global burned area declined by 24.3 ± 8.8% over the past 18 years. The estimated decrease in burned area remained robust after adjusting for precipitation variability and was largest in savannas. Agricultural expansion and intensification were primary drivers of declining fire activity. Fewer and smaller fires reduced aerosol concentrations, modified vegetation structure, and increased the magnitude of the terrestrial carbon sink. Fire models were unable to reproduce the pattern and magnitude of observed declines, suggesting that they may overestimate fire emissions in future projections. Using economic and demographic variables, we developed a conceptual model for predicting fire in human-dominated landscapes.
Fichier principal
Vignette du fichier
1356.full.pdf (2.14 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

cea-01588364 , version 1 (01-07-2021)

Identifiers

Cite

N. Andela, C. Morton, L. Giglio, Y. Chen, G. van Der Werf, et al.. A human-driven decline in global burned area. Science, 2017, 356 (6345), pp.1356 - 1362. ⟨10.1126/science.aal4108⟩. ⟨cea-01588364⟩
421 View
438 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More