延河流域优势植物光谱指数分析

以延河流域优势物种的光谱数据为例,阐述了延河流域主要物种的光谱指数特征,分析了影响植被光谱指数的因素,总结了延河流域优势物种光谱鉴别方法,提出了利用植被光谱导数值和植被体内水份在970nm和1190nm附近的吸收特征帮助鉴别植被类型的方法。

A RESEARCH ON THE HYPERSPECTRAL INDEXES OF DOMINANT VEGETATION IN YANHE DRAINAGE AREA

Many scientists have probed into using hyperspectral indexes to identify vegetation and their coverage, and created many methods. These methods, however, are based on statistics and regression analysis, and do not necessarily suit all floristics in a specific area. This paper described some of the methods, took the dominant vegetations in Yanhe drainage area as examples to compute their indexes and discuss their spectral characteristics as well as the affecting factors, and summed up the methods for identifying the dominant plants in the area with spectrum indexes. The utilization of the water absorbtion indexes controlled by water content of plants on the central bands of 970nm and 1190nm is also proposed to help identify the plants.