DOI: 10.1111/gcb.12288
论文题名: Satellite microwave detection of boreal forest recovery from the extreme 2004 wildfires in Alaska and Canada
作者: Jones M.O. ; Kimball J.S. ; Jones L.A.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2013
卷: 19, 期: 10 起始页码: 3111
结束页码: 3122
语种: 英语
英文关键词: AMSR-E
; Boreal
; Fire
; Microwave vegetation optical depth
; MODIS
; Remote sensing
; Vegetation recovery
Scopus关键词: boreal forest
; canopy
; carbon cycle
; carbon dioxide
; climate feedback
; energy budget
; environmental disturbance
; MODIS
; NDVI
; optical depth
; radiometer
; remote sensing
; satellite data
; vegetation dynamics
; wildfire
; Alaska
; Canada
; United States
; AMSR-E
; article
; biomass
; boreal
; Canada
; fire
; growth, development and aging
; microwave radiation
; microwave vegetation optical depth
; MODIS
; remote sensing
; telecommunication
; tree
; United States
; vegetation recovery
; AMSR-E
; boreal
; fire
; microwave vegetation optical depth
; MODIS
; remote sensing
; vegetation recovery
; Alaska
; Biomass
; Fires
; Microwaves
; Remote Sensing Technology
; Satellite Communications
; Trees
; Yukon Territory
英文摘要: The rate of vegetation recovery from boreal wildfire influences terrestrial carbon cycle processes and climate feedbacks by affecting the surface energy budget and land-atmosphere carbon exchange. Previous forest recovery assessments using satellite optical-infrared normalized difference vegetation index (NDVI) and tower CO2 eddy covariance techniques indicate rapid vegetation recovery within 5-10 years, but these techniques are not directly sensitive to changes in vegetation biomass. Alternatively, the vegetation optical depth (VOD) parameter from satellite passive microwave remote sensing can detect changes in canopy biomass structure and may provide a useful metric of post-fire vegetation response to inform regional recovery assessments. We analyzed a multi-year (2003-2010) satellite VOD record from the NASA AMSR-E (Advanced Microwave Scanning Radiometer for EOS) sensor to estimate forest recovery trajectories for 14 large boreal fires from 2004 in Alaska and Canada. The VOD record indicated initial post-fire canopy biomass recovery within 3-7 years, lagging NDVI recovery by 1-5 years. The VOD lag was attributed to slower non-photosynthetic (woody) and photosynthetic (foliar) canopy biomass recovery, relative to the faster canopy greenness response indicated from the NDVI. The duration of VOD recovery to pre-burn conditions was also directly proportional (P < 0.01) to satellite (moderate resolution imaging spectroradiometer) estimated tree cover loss used as a metric of fire severity. Our results indicate that vegetation biomass recovery from boreal fire disturbance is generally slower than reported from previous assessments based solely on satellite optical-infrared remote sensing, while the VOD parameter enables more comprehensive assessments of boreal forest recovery. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62315
Appears in Collections: 影响、适应和脆弱性
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作者单位: The University of Montana Flathead Lake Biological Station, Polson, MT, 59860, United States; Numerical Terradynamic Simulation Group, The University of Montana, Missoula, MT, 59812, United States
Recommended Citation:
Jones M.O.,Kimball J.S.,Jones L.A.. Satellite microwave detection of boreal forest recovery from the extreme 2004 wildfires in Alaska and Canada[J]. Global Change Biology,2013-01-01,19(10)