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Detecting and mapping vegetation distribution on the Antarctic Peninsula from remote sensing data

机译：利用遥感数据检测和绘制南极半岛的植被分布图

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摘要

We present the first regional map of vegetation of anywhere on the Antarctic continent based on remote sensing (RS) data. We have used a normalized difference vegetation index (NDVI) for the examination of Landsat ETM data on the Antarctic Peninsula. The results show that 44.6 km~2 (0.086%) of the study area (74,468 km~2) is classed with a probability of vegetation of over 50%. The NDVI analysis is ground-truthed against vegetation surveys in Ryder Bay on the Antarctic Peninsula, and the results have been corrected for several factors influencing low NDVI readings in this environment. This methodology has been applied to 13 Landsat scenes covering Graham Land in the Northern part of the Antarctic Peninsula to examine the distribution of vegetation in the region. The Antarctic Peninsula region is important, as it has shown rapid warming of over 3℃ during the past 50 years, and predictions indicate accelerated future warming. A baseline survey of the amount and distribution of vegetation is required against which to monitor future change. The results give a comprehensive coverage and allow us to present the first remote sensing-based vegetation map in Antarctica. However, initial results point to the need for further investigation of apparent errors resulting from geology on bare ground.
机译：我们基于遥感（RS）数据展示了南极大陆任何地方的第一张植被区域图。我们已使用归一化植被指数（NDVI）来检查南极半岛的Landsat ETM数据。结果表明，研究区域（74,468 km〜2）的44.6 km〜2（0.086％）被归类为植被的概率超过50％。 NDVI分析是针对南极半岛莱德湾的植被调查所得出的结论，并且针对影响该环境下NDVI读数较低的几个因素对结果进行了校正。该方法已应用于覆盖南极半岛北部Graham Land的13个Landsat场景，以检查该地区的植被分布。在过去的50年中，南极半岛地区显示出3℃以上的快速升温，并且预测表明未来的升温将加速。需要对植被数量和分布进行基线调查，以监测未来的变化。结果提供了全面的覆盖面，使我们能够展示南极洲第一张基于遥感的植被图。但是，初步结果表明需要对裸露的地质地质造成的明显错误进行进一步调查。

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