中文摘要：

传统的测树方法是用轮尺、直径卷尺和检径尺（钩尺）、围尺等测量树的胸径，而对于树木上部直径的测量就显得无能为力，并且目前对于立木上部直径的测量都没有很好的方法（孟宪宇，2002；吴富桢，1992；大隅真一，1981）。对于树高，在我国常用的是布鲁菜斯测高器，用该测高器时先要测出测点至树木的水平距离，

英文摘要：

Based on the measurement principle of multi-baseline digital close-range photogrammetry system,this paper proposed method of gain forest measurement factors by this system. Through comparing research of the statistical results in photogrammetry data of stumpage and measured data of total station,the result indicates that people may gain more reliable data by multi-baseline digital close-range photogrammetry system,accurately monitor forest and meet the need of forest measurement by this system. At the same time,by establishing three-dimension point cloud model based on 3-D model of tree,people may expediently gain forest measurement factors which shall be harder by traditional methods.