关键词：
森林蓄积量估测;遥感因子选择;资源三号影像;波段光谱;地形因子
摘 要：
以内蒙古旺业甸林场为研究区域,以资源三号(ZY-3)卫星遥感图像为数据源,通过对影像进行处理,获取对应样地的波段光谱值、光谱组合值及地形因子信息等遥感因子。基于对各遥感因子的信息量分析、多重相关性危害分析及应用残差平方和的方法对遥感因子进行筛选,实验结果表明:ZY-3影像提取的12个遥感因子中,单波段因子中ZY3的信息量最大,波段组合中ZY(2-3)/ZY4的信息量最大,地形因子中高程的信息量最大,ZY-3的波段、波段组合和地形因子间存在多重相关性,去掉ZY(2-3)/(2+3)和坡度因子后,多重相关性的危害大大降低,可以满足进一步建立蓄积量遥感反演模型要求。
译 名：
Remote sensing factor optimization for forest volume estimation based on ZY-3 images
作 者：
WANG Jia;YIN Hua-li;WANG Xiao-ying;FENG Zhong-ke;Beijing City Key Lab.of Institute of Precision Forestry;Center of GIS,GPS & RS,Beijing Forestry University;
关键词：
forest volume estimation;;remote sensing factors choice;;ZY-3 images;;band spectrum;;topographical factors
摘 要：
By selecting Wangyedian Forest Station in Inner Mongolia as the studied area, taking the remote sensing images of satellite Ziyuan 3(ZY-3) as the data sources, the Wangyedian Forest Station's remote sensing images were treated, the remote sensing factors of band spectral values, spectral combination values and topographic factors in the corresponding sample area were acquired. Based on the information analysis of the remote sensing factors, multiple correlation hazard analysis and method of minimum sum of residual squares, the obtained remote sensing factors were screened out. The experimental results show that among the 12 remote sensing factors of ZY-3 images, SP3 in single band spectra factors, SP234 in the combination factors of spectra, elevation in terrain factors had the maximum amount of information; There existed multiple correlations in the 12 remote sensing factors; After analyses, removing the SP2323 and slope factor, the harm of multiple correlation decreased greatly, and optimized results can meet the further requirements of establishing forest volume model by remote sensing ZY-3 images.
