The Vegetation Recovery Process in Miyakejima Island after the 2000 Volcanic Eruption Using Satellite Remote Sensing
The Vegetation Recovery Process in Miyakejima Island after the 2000 Volcanic Eruption Using Satellite Remote Sensing
复制标题
利用卫星遥感研究2000年火山喷发后三宅岛植被恢复过程
DOI：
10.5632/jila.71.539
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
T. Kamijo
中科院分区：
文献类型：
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作者：
Toshimori Takahashi;Kazuhiro Katoh;T. Kamijo
2000年7月三宅岛火山爆发后，岛上植被受到了广泛的影响。这一现象仍在继续，大部分植被覆盖已被改变。植被恢复过程的监测对于生态系统研究、防灾减灾和海岛重建具有重要意义。本研究利用卫星遥感技术和野外植被调查，对2000年三宅岛火山爆发后的植被恢复过程进行了评价。选取Terra/ASTER和JERS-1/OPS的12幅多时相卫星影像，合成火山喷发前、喷发后2年内和喷发后3年以上3个时间序列数据集。将这三个时间序列图像数据集分析为最大NDVI值的无缝图像。根据三幅图像的非监督分类结果，将三宅岛划分为六个植被变化类型。这些结果很好地跟踪了以往的工作和野外植被调查。这些等级是通过植被变化来识别的，这表明2000年火山爆发后树木的破坏和植被的恢复。
The vegetation of Miyake Island has been widely effected by the volcanic eruption in July 2000. This phenomenon is still going on and much of the vegetation cover has been changed. It is quite important to monitor the vegetation recovery process because of ecosystem study, prevention of disaster and rehabilitation of the Island. This study investigated an evaluation of the vegetation recovery process in Miyakejima Island after the 2000 volcanic eruption using satellite remote sensing and field vegetation survey. Multi temporal 12 satellite images of Terra/ASTER and JERS-1/OPS were selected and combined into three time series datasets such as the before eruption, the after eruption within two years and the after eruption more than three years. These three time series image datasets were analyzed into the seamless images of the maximum NDVI value. According to the unsupervised classification of these three images, Miyakejima Island was divided into six classes with vegetation change patterns. These results followed past works and field vegetation survey well. The classes were recognized with the vegetation change which shows the damage of trees and the recovery of vegetation after the volcanic eruption of the year 2000.