基于冠层实测光谱的树种识别  

Tree Species Identification Based on Measured Canopy Spectrum

作　　者：刘育圳 程瑞彤 陈文惠[1,2] 林莉平 LIU Yuzhen;CHENG Ruitong;CHEN Wenhui;LIN Liping(School of Geographical Sciences,Fujian Normal University,Fuzhou 350007,China;State Key Laboratory for Subtropical Mountain Ecology of the Ministry of Science and Technology and Fujian Province,Fujian Normal University,Fuzhou 350007,China)

机构地区：[1]福建师范大学地理科学学院,福州350007 [2]福建师范大学湿润亚热带山地生态国家重点实验室培育基地,福州350007

出　　处：《亚热带资源与环境学报》2020年第4期86-92,共7页Journal of Subtropical Resources and Environment

基　　金：福建省属公益类科研院所基本科研专项(2017R1034-1)。

摘　　要：利用美国ASD公司生产的FieldSpec3便携式地物光谱仪实地测得三明野外科学观测站的4种树种马尾松、杉木、米槠和香叶树的高光谱数据,进行光谱特征分析与树种识别研究。通过探讨平滑后是否进行去包络线处理,得到包络线去除的光谱曲线能更好地突出光谱曲线的吸收和反射特征的结论。对去包络线的曲线进行光谱特征参量选取,结果表明:根据“红边”位置差异能够识别香叶树,基于蓝边面积和红边面积的特征参数值可以将米槠同马尾松和杉木很好地区别开来,马尾松和杉木可以通过红谷反射率、红谷反射率与绿峰反射率的比值、红谷反射率与绿峰反射率的归一化比值进行区分。This study uses FieldSpec3 portable ground spectrometer produced by American ASD Company to measure the hyperspectral data of four species of Pinus massoniana,Cunninghamia lanceolata,Castanopsis carlesii and Lindera communis in Sanming Field Scientific Observation Station on the spot to analyze the spectral characteristics and identify the species.By discussing whether to perform continuum removal after smoothing,it is concluded that the spectrum curve with the continuum removal can better highlight the absorption and reflection characteristics of the spectrum curve.The spectral characteristic parameter selection of the curve of the continuum removal shows that the Lindera communis can be identified according to the position difference of the“red edge”,the characteristic parameter values based on the area of the blue border and the area of the red border can distinguish Castanopsis carlesii from Pinus massoniana and Cunninghamia lanceolata,Pinus massoniana and Cunninghamia lanceolata can be distinguished by red valley reflectivity,the ratio of red valley reflectivity to green peak reflectivity,and the normalized ratio of red valley reflectivity to green peak reflectivity.

关 键 词：冠层 高光谱 特征参量 树种识别 

分 类 号：S771.8[农业科学—森林工程]