Department of Marine Remote Sensing, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran.
Darya Negar Pars Consulting Engineers, Iran.
Mar Pollut Bull. 2018 Apr;129(1):266-274. doi: 10.1016/j.marpolbul.2018.02.045. Epub 2018 Mar 23.
High spatial resolution WorldView-2 (WV2) satellite imagery coupled with field observations have been utilized for mapping the coral reefs around Hendorabi Island in the northern Persian Gulf. In doing so, three standard multispectral bands (red, green, and blue) were selected to produce a classified map for benthic habitats. The in-situ observations were included photo-transects taken by snorkeling in water surface and manta tow technique. The satellite image has been classified using support vector machine (SVM) classifier by considering the information obtained from field measurements as both training and control points data. The results obtained from manta tow demonstrated that the mean total live hard coral coverage was 29.04% ± 2.44% around the island. Massive corals poritiids (20.70%) and branching corals acroporiids (20.33%) showed higher live coral coverage compared to other corals. Moreover, the map produced from satellite image illustrated the distribution of habitats with 78.1% of overall accuracy.
利用高空间分辨率的 WorldView-2（WV2）卫星图像结合实地观测，对波斯湾北部 Hendorabi 岛周围的珊瑚礁进行了测绘。为此，选择了三个标准多光谱波段（红、绿、蓝）来制作用于底栖生境分类的地图。实地观测包括在水面进行浮潜时拍摄的照片样条和使用蝠鲼拖网进行的观测。通过支持向量机（SVM）分类器对卫星图像进行分类，同时考虑从实地测量中获取的信息作为训练和控制点数据。蝠鲼拖网获得的结果表明，该岛周围的活体硬珊瑚覆盖率平均为 29.04%±2.44%。块状珊瑚 Poritiids（20.70%）和分枝状珊瑚 Acroporiids（20.33%）的活体珊瑚覆盖率高于其他珊瑚。此外，卫星图像生成的地图说明了生境的分布情况，总体准确度为 78.1%。
