%0 Journal Article
%T Estimation of Moisture Content of Grassland Fuel Based on Hyperspectra<br>基于高光谱的草地可燃物含水率估测方法
%A BAO Yu-long
%A ZHANG Ji-Quan
%A ZHAO Yun-Sheng
%A TONG Zhi-Jun
%A LIU Xing-Peng
%A <br>包玉龙
%A 张继权
%A 赵云升
%A 佟志军
%A 刘兴朋
%J 红外
%D 2011
%I 
%X A FieldSpee Pro FRTM spectrograph produced by ASD company in USA is used to obtain the spectral data of the grassland fuel with different moisture content during fire prevention period. A dry weight method is used to get the moisture content of the samples. The continuum removal is used to process the spectral reflectance curves. When using the area near 1400 nm as the wavelength range related to water absorption characteristics, the spectral absorption index, spectral absorption depth index, curve length and curve area etc. of the samples are calculated. Then, the correlation of the calculated results with the measured moisture content of the fuel is analyzed. It is found that the correlation of the curve length index with the moisture content is highest, reaching 0.77. By making a regression analysis of curve length index and moisture content, a mathematic model is established and tested. The test result shows that the model has its predictive correlation coefficient r up to 0.80. This method can detect the moisture content of grassland fuel quickly. It is a new way to predict prairie fire quickly and directly.
%K grassland fuel
%K moisture content
%K hyperspectra
%K continuum removal<br>草地可燃物
%K 含水率
%K 高光谱
%K 包络线去除
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=3723000AE493FCE650601982177048B1&aid=39B6DAD90A04AD75235071B16989897A&yid=9377ED8094509821&vid=9971A5E270697F23&iid=DF92D298D3FF1E6E&sid=16D8618C6164A3ED&eid=ECE8E54D6034F642&journal_id=1672-8785&journal_name=红外&referenced_num=0&reference_num=15