黄河三角洲典型植被地物光谱特征分析与可分性查找表

Spectral discrimination and separable feature lookup table of typical vegetation species in Yellow River Delta wetland

通过实地测量黄河三角洲的6种典型植被的现场光谱,开展了基于反射率光谱的植被特征光谱分析和提取,该工作在原始反射率光谱曲线和经过包络线去除法变换后的曲线上分别开展。论文主要工作和结论包括:(1)通过分析建立了黄河三角洲6种典型植被类型的光谱特征波段查找表,并给出了每一种植被区别于其它5种植被类型的特征波段分布范围;(2)分析了包络线去除变换对上述6种植被光谱可分性的影响,发现柽柳由不可分变为可分,碱蓬、棉花、刺槐和天然柳树的可分性光谱波段明显增多和展宽。

Trough field measurements of six kinds of typical vegetation in the Yellow River Delta with a visibel-nir field spectroradiometer, analysis and extraction of vegetation discrimination spectrum work are carried out based on the o- riginal spectral reflectance spectrum and continuum removed spectrum. The main work and results include： （1） A spectrum discriminative lookup table of original spectrum and continuum removal spectrum between every 2 typical vegetation species through the discrimination method is established, and the separable spectrum between every vegeta- tion specie with other 5 vegetation species are obtained. （ 2 ） Then the impacts of continuum removal method for vege- tation separable feature spectrum extraction is analyzed, the resuh reveal that for Suaeda glauca, Gossypium spp, So- phora japonica, and Salix babylonica the discriminative spectrum are broadening through continuum removal transfor- mation.