DOI: 10.1016/j.jag.2015.08.011
Scopus记录号: 2-s2.0-85010851214
论文题名: Effects of post-fire wood management strategies on vegetation recovery and land surface temperature (LST) estimated from Landsat images
作者: Vlassova L ; , Pérez-Cabello F
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2016
卷: 44 起始页码: 171
结束页码: 183
语种: 英语
英文关键词: Ecosystem recovery
; Land surface temperature (LST)
; Landsat-8
; NDVI
; Post-fire wood management
; Salvage logging
Scopus关键词: forest ecosystem
; forest management
; land surface
; Landsat
; logging (timber)
; NDVI
; remote sensing
; surface temperature
; vegetation structure
; wood
; Pinus halepensis
英文摘要: The study contributes remote sensing data to the discussion about effects of post-fire wood management strategies on forest regeneration. Land surface temperature (LST) and Normalized Differenced Vegetation Index (NDVI), estimated from Landsat-8 images are used as indicators of Pinus halepensis ecosystem recovery after 2008 fire in areas of three post-fire treatments: (1) salvage logging with wood extraction from the site on skidders in suspended position (SL); (2) snag shredding in situ leaving wood debris in place (SS) performed two years after the event; and (3) non-intervention control areas (CL) where all snags were left standing. Six years after the fire NDVI values ∼0.5 estimated from satellite images and field radiometry indicate considerable vegetation recovery due to efficient regeneration traits developed by the dominant plant species. However, two years after management activities in part of the burnt area, the effect of SL and SS on ecosystem recovery is observed in terms of both LST and NDVI. Statistically significant differences are detected between the intervened areas (SL and SS) and control areas of non-intervention (CL); no difference is registered between zones of different intervention types (SL and SS). CL areas are on average 1 °C cooler and 10% greener than those corresponding to either SL or SS, because of the beneficial effects of burnt wood residuals, which favor forest recovery through (i) enhanced nutrient cycling in soils, (ii) avoidance of soil surface disturbance and mechanical damage of seedlings typical to the managed areas, and (iii) ameliorated microclimate. The results of the study show that in fire-resilient ecosystems, such as P. halepensis forests, NDVI is higher and LST is lower in areas with no management intervention, being an indication of more favorable conditions for vegetation regeneration. © 2015 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80099
Appears in Collections: 气候变化事实与影响
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作者单位: GEOFOREST Group, IUCA, Department of Geography and Spatial Management, University of Zaragoza, Pedro Cerbuna 12, Zaragoza, Spain; Department of Environmental Sciences, Technical State University of Quevedo, Quevedo, Los Ríos, Ecuador
Recommended Citation:
Vlassova L,, Pérez-Cabello F. Effects of post-fire wood management strategies on vegetation recovery and land surface temperature (LST) estimated from Landsat images[J]. International Journal of Applied Earth Observation and Geoinformation,2016-01-01,44