文章基本信息

标题：Comparison of vegetation regeneration after wildfire between Mediterranean and tundra ecosystems by using Landsat images
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作者：Cheuklap Au Yeung ; Rongrong Li
期刊名称：Annals of GIS
印刷版ISSN：1947-5683
出版年度：2018
卷号：24
期号：2
页码：99-112
DOI：10.1080/19475683.2018.1424740
语种：English
出版社：Taylor & Francis Ltd.
摘要：Wildfires are a major natural hazard with tremendous implications for the Earth’s ecosystems. Investigating fire regimes and fire–vegetation dynamics using remote-sensing techniques is becoming increasingly common because of their large-scale coverage and data availability. However, there is still scarce study to compare vegetation regeneration between different ecosystems after wildfires due to lack of data. This study used time series of Landsat images to explore and compare post-fire vegetation recovery in a Mediterranean (Witch Creek Fire) and tundra (Anaktuvuk River Fire) ecosystem. After 8 years of disturbance, the vegetation in the Mediterranean ecosystem had still not yet recovered, whereas the tundra ecosystem recovered in just 3 years. Higher degree burning leads to quicker vegetation recovery rate. However, ecological retrogression was also detected. Spatial heterogeneity in post-fire vegetation recovery observed in both sites can be attributed to topographic factors, soil water availability and the thermokarst process.
关键词：Wildfire;vegetation regeneration;fire ecology;Witch Creek Fire;Anaktuvuk River Fire