首页> 外文会议>2011 6th International Workshop on the Analysis of Multi-temporal Remote Sensing Images >Time-series analysis of rainforest clearing in Sabah, Borneo using Landsat imagery
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Time-series analysis of rainforest clearing in Sabah, Borneo using Landsat imagery

机译:利用Landsat影像对婆罗洲沙巴的雨林清理进行时间序列分析

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Tropical forests are being cleared at alarming rates. The release of the Landsat image archive represents an opportunity to assess rainforest clearing over time through time-series analysis. The objective was to map the extent of rainforest clearing and assess land cover trends at the object level within a selected study area in Sabah, Borneo using Landsat images from 1991, 2000, 2004 and 2008. The images were delineated based on image interpretation cues and validated against existing high spatial resolution images on Google Earth. Overall mapping accuracies were >94%. Time-series trends for each delineated object were classified into trend classes to quantify the land cover history per object. The results showed that approximately 31% or 5,500 km2 of land cover within the study area changed between 1991 and 2008. This research presents an effective method for time-series analysis that can be used to regularly monitor forest clearing on Borneo.
机译:热带森林的砍伐速度惊人。 Landsat影像档案的发布为通过时间序列分析评估随时间推移清除雨林的机会提供了机会。目的是使用1991年,2000年,2004年和2008年的Landsat图像来绘制婆罗洲沙巴选定研究区域内雨林的清除程度并评估对象水平的土地覆盖趋势。针对Google Earth上现有的高空间分辨率图像进行了验证。总体制图准确度> 94%。将每个划定对象的时间序列趋势分类为趋势类,以量化每个对象的土地覆被历史。结果表明,在1991年至2008年之间,研究区域内约31%或5500 km 2 发生了变化。这项研究提出了一种有效的时间序列分析方法,可用于定期监测森林在婆罗洲上空。

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