光谱波段宽度对森林叶片叶绿素含量反演的影响分析Analysis of spectral band width in retrieval of forest foliar chlorophyll concentration
佃袁勇,方圣辉,徐永荣,张育育,刘沐阳
摘要(Abstract)：
随着传感器技术的发展,高光谱数据光谱的波段宽度逐渐变窄,如何从海量的光谱数据中找到最优的光谱波段反演叶绿素含量,成为研究的难点问题。本文在测量华中农业大学狮子山6种主要树种的光谱数据和叶绿素含量的基础上,利用叶绿素指数(CI)和回归方法反演叶绿素含量,并分析了波段宽度对反演叶绿素含量结果的影响,结果发现波段宽度会影响到叶绿素反演的精度,当波段宽度为30nm时,叶绿素含量与"红边"区域(700nm-730nm)和近红外区域(770nm-800nm)叶绿素指标(CI)间的线性关系较好,决定系数可达到77.62%,均方根误差为10.6ug/cm2。
关键词(KeyWords)： 高光谱遥感;叶绿素;反演;光谱波段宽度
基金项目(Foundation): 国家自然科学基金项目(30972413)
作者(Author): 佃袁勇,方圣辉,徐永荣,张育育,刘沐阳
DOI: 10.16251/j.cnki.1009-2307.2012.06.003
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