Tundra Fire Regimes in the Noatak River Watershed, Alaska: 1956-83
Tundra Fire Regimes in the Noatak River Watershed, Alaska: 1956-83
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阿拉斯加诺阿塔克河流域的苔原火灾状况：1956-83 年
DOI：
10.14430/arctic2133
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发表时间：
1985
期刊：
影响因子：
1.2
通讯作者：
W. A. Patterson
中科院分区：
文献类型：
--
作者：
C. Racine;J. G. Dennis;W. A. Patterson
阿拉斯加西北部诺塔克河流域冻原火灾的位置，原因，频率，大小，旋转时间和季节性时间确定从土地管理局火灾记录为1956-83年和卫星（LANDSAT）1：1000000比例尺，黑色和白色，波段7图像为1972-81年。在1956年至1983年的28年间，共发现了79起火灾，烧毁了1018平方公里。其中大部分发生在450米以下的谷底，靠近Noatak河或其支流。然而，平均火灾的大小，频率和旋转时间的差异差异很大，在六个自然地理区域的分水岭。所有火灾都发生在6月和7月的两个夏季之一。这种季节性的时间和比较的火灾制度在诺亚塔克与其他地区的北方阿拉斯加的影响进行了讨论。关键词：北极苔原，陆地卫星图像，布鲁克斯山脉，火灾记录，火灾历史，阿拉斯加，生物圈保护区
The location, cause, frequency, size, rotation times, and seasonal timing of tundra fires in the Noatak River watershed of northwestern Alaska were determined from Bureau of Land Management fire records for 1956-83 and satellite (LANDSAT) 1:1 000 000 scale, black and white, band 7 imagery for 1972-81. Seventy-nine fires that burned 1018 km² were detected during the 28-year period from 1956 to 1983. Most of these occurred on the valley floor below 450 m in close proximity to the Noatak River or its tributaries. However, differences in mean fire size, frequency, and rotation times varied greatly among the six physiographic regions of the watershed. All fires occurred during one of two summertime periods in June and July. The implications of this seasonal timing and comparisons of the fire regimes in the Noatak with those in other areas of northern Alaska are discussed. Key words: arctic tundra, LANDSAT imagery, Brooks Range, fire records, fire history, Alaska, Biosphere Reserves