High-resolution multispectral satellite image and post-fire ground survey reveal the pre-fire beetle damage on snags in southern Alaskan
High-resolution multispectral satellite image and post-fire ground survey reveal the pre-fire beetle damage on snags in southern Alaskan
复制标题
高分辨率多光谱卫星图像和火灾后地面调查揭示了火灾前甲虫对阿拉斯加南部障碍物的损害
DOI：
10.1080/02827581.2013.793387
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发表时间：
2013
影响因子：
1.8
通讯作者：
N.
中科院分区：
文献类型：
--
作者：
Makoto;K.;Tani;H.;Kamata;N.
阿拉斯加云杉林同时暴露于火甲虫和云杉甲虫 [Dendroctonus rufipennis(Kirby)]。为了了解云杉甲虫对火灾影响生态系统功能的过程的影响，我们开发了一种重建技术来测量云杉甲虫对树木造成的火灾前损害。我们通过将结果与火灾后地面调查进行比较，使用高分辨率多光谱卫星图像验证了对火灾前树木状况的评估。两种方法确定的火前树木状况非常吻合。这一结果表明，将高分辨率多光谱成像与对断枝上云杉甲虫的火灾后地面调查相结合，是确定不断变化的北方森林生态系统中森林火灾前状况的有力工具。
Alaskan spruce forests are exposed to both fire and spruce beetles [Dendroctonus rufipennis(Kirby)]. To understand the influence of spruce beetles on the process through which fire affects ecosystem function, we developed a reconstruction technique to measure prefire damage to trees caused by the spruce beetle. We validated our evaluation of prefire tree conditions using a high-resolution multispectral satellite image by comparing our results with a postfire ground survey. The prefire tree conditions determined by the two methods coincided well with each other. This result suggests that combining high-resolution multispectral imaging and postfire ground surveys of spruce beetles on snags is a powerful tool to determine the prefire condition of a forest in a changing boreal forest ecosystem.