DOI: 10.1016/j.jag.2014.10.015
Scopus记录号: 2-s2.0-84963830651
论文题名: Land surface temperature as potential indicator of burn severity in forest Mediterranean ecosystems
作者: Quintano C ; , Fernández-Manso A ; , Calvo L ; , Marcos E ; , Valbuena L
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2015
卷: 36 起始页码: 1
结束页码: 12
语种: 英语
英文关键词: Burn severity
; Composite Burn Index (CBI)
; Land surface temperature (LST)
; Landsat
Scopus关键词: forest fire
; land surface
; Landsat
; Landsat thematic mapper
; satellite imagery
; surface temperature
; variance analysis
; wildfire
; Spain
英文摘要: Forest fires are one of the most important causes of environmental alteration in Mediterranean countries. Discrimination of different degrees of burn severity is critical for improving management of fire-affected areas. This paper aims to evaluate the usefulness of land surface temperature (LST) as potential indicator of burn severity. We used a large convention-dominated wildfire, which occurred on 19-21 September, 2012 in Northwestern Spain. From this area, a 1-year series of six LST images were generated from Landsat 7 Enhanced Thematic Mapper (ETM+) data using a single channel algorithm. Further, the Composite Burn Index (CBI) was measured in 111 field plots to identify the burn severity level (low, moderate, and high). Evaluation of the potential relationship between post-fire LST and ground measured CBI was performed by both correlation analysis and regression models. Correlation coefficients were higher in the immediate post-fire LST images, but decreased during the fall of 2012 and increased again with a second maximum value in summer, 2013. A linear regression model between post-fire LST and CBI allowed us to represent spatially predicted CBI (R-squaredadj > 85%). After performing an analysis of variance (ANOVA) between post-fire LST and CBI, a Fisher's least significant difference test determined that two burn severity levels (low-moderate and high) could be statistically distinguished. The identification of such burn severity levels is sufficient and useful to forest managers. We conclude that summer post-fire LST from moderate resolution satellite data may be considered as a valuable indicator of burn severity for large fires in Mediterranean forest ecosytems. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79570
Appears in Collections: 气候变化事实与影响
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作者单位: Electronic Technology Department, Sustainable Forest Management Research Institute, University of Valladolid, C/Francisco Mendizábal, s/n, Valladolid, Spain; Agrarian Science and Engineering Department, University of León, Av. Astorga s/n, Ponferrada, Spain; Area of Ecology, Faculty of Biological and Environmental Sciences, University of León, León, Spain
Recommended Citation:
Quintano C,, Fernández-Manso A,, Calvo L,et al. Land surface temperature as potential indicator of burn severity in forest Mediterranean ecosystems[J]. International Journal of Applied Earth Observation and Geoinformation,2015-01-01,36