红树林高光谱分析技术研究

利用高光谱分析方法对广西山口红树林保护区红树林的实测光谱数据进行处理,从而获取研究区内红树林的光谱特征,它们与泥滩、大米草之间的光谱差异以及红树林之间的光谱差异.实验证明,红树林具有大致相同的光谱曲线特征,光谱差异比较小,在大致相同的波段出现反射率的峰谷值,只是以720 nm为界,呈现出一定的特征;对数变换后的曲线也存在相似的特征;微分曲线图像将差异显著化,主要是表现在蓝光吸收区、红光吸收区和“红边”区域.利用相关系数分类法(80%)和光谱角分类法(80%)来识别红树林种类的精度高于空间距离分类法(60%).

Research on Mangrove Hyperspectrum Analysis Technology

Using the superspectral methods to analyse the spectrum data of field survey we gain the mangrove spectral character.Then we try to find the difference between the mangrove and the sands and the difference among the research mangroves.The research indicates that mangrove has the mostly similar spectral character,and the accuracy of correlate coefficient classification(80%) and the spectrum angle classification(80%) are better than the spatial distance classification(60%).