DOI: 10.1002/2017JD027749
Scopus记录号: 2-s2.0-85043262164
论文题名: Spatial and Temporal Variability and Trends in 2001–2016 Global Fire Activity
作者: Earl N. ; Simmonds I.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 5 起始页码: 2524
结束页码: 2536
语种: 英语
英文关键词: fire activity
; global scale
; satellite data
; trends
英文摘要: Fire regimes across the globe have great spatial and temporal variability, and these are influence by many factors including anthropogenic management, climate, and vegetation types. Here we utilize the satellite-based “active fire” product, from Moderate Resolution Imaging Spectroradiometer (MODIS) sensors, to statistically analyze variability and trends in fire activity from the global to regional scales. We split up the regions by economic development, region/geographical land use, clusters of fire-abundant areas, or by religious/cultural influence. Weekly cycle tests are conducted to highlight and quantify part of the anthropogenic influence on fire regime across the world. We find that there is a strong statistically significant decline in 2001–2016 active fires globally linked to an increase in net primary productivity observed in northern Africa, along with global agricultural expansion and intensification, which generally reduces fire activity. There are high levels of variability, however. The large-scale regions exhibit either little change or decreasing in fire activity except for strong increasing trends in India and China, where rapid population increase is occurring, leading to agricultural intensification and increased crop residue burning. Variability in Canada has been linked to a warming global climate leading to a longer growing season and higher fuel loads. Areas with a strong weekly cycle give a good indication of where fire management is being applied most extensively, for example, the United States, where few areas retain a natural fire regime. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114280
Appears in Collections: 气候减缓与适应
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作者单位: School of Earth Sciences, The University of Melbourne, Melbourne, VIC, Australia
Recommended Citation:
Earl N.,Simmonds I.. Spatial and Temporal Variability and Trends in 2001–2016 Global Fire Activity[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(5)