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首页> 外文会议>International conference on remote sensing for marine and coastal environments >Near infrared aerial photo-detection of Zostera japonica communities in pacific northwest estuarine intertidal habitats
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Near infrared aerial photo-detection of Zostera japonica communities in pacific northwest estuarine intertidal habitats

机译：Zostera japonica社区近红外空中光学检测，在太平洋西北河口跨境境内境内栖息地

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Near infrared color aerial photography (～1:7200) of Yaquina Bay, Oregon, flown at minus tides during summer months of 1997 was used to produce digital stereo ortho-photographs covering tidally exposed eelgrass habitat. GIS analysis, coupled with GPS positioning of ground-truth data detected Zostera japonica communities (non-indigenous eelgrass), which are physically separated by elevation in this and similar Pacific North-west coastal estuaries from Zostera marina (native eelgrass) communities. The non-indigenous Z. japonica typically occurs at or near mean high water while the native Z. marina is restricted to ～0.7 m above mean low low water and below. Recognition of Z. japonica patches from adjacent bare sediment and emergent beach or marsh grasses was aided by combining specifically tailored detection algorithms and "heads up" digitizing with digital bathymetry. Further progress in algorithm development should allow areal delineation, mapping and change analysis.
机译：俄勒冈州耀孔湾近红外线电影（〜1：7200），在1997年夏天的夏天飞行飞行，用于生产数字立体声邻近照片，覆盖整个暴露的Eelgrass栖息地。 GIS分析，与地面真理数据的GPS定位相结合，检测到Zostera japonica群落（非土着eelgrass），其在Zostera Marina（原住民）社区的Zostera Marina（Natiant Elgrass）社区的同类西北沿海河口的海拔地物理分离。非本土Z.japonica通常发生在平均高水中或附近，而天然Z.Marina限制在平均低水平的〜0.7m以上。通过使用数字沐浴曲线的专为定制的检测算法和“抬头”数字化来辅助来自相邻的裸沉积物和突出的裸沉积物和紧急海滩或沼泽草地的Z. japonica斑块。算法开发的进一步进展应允许面积描绘，映射和变更分析。

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