【摘要】 为实现单木树冠体积的精准测量,文章介绍了一种手持式测树枪量测树冠体积的方法。在被测树周围布设测站点,以一定的顺序获取各测站点正对树冠边缘点位坐标,通过等高线内插法分层,以构成多面体,利用积分算法求算树冠的体积。将电子测树枪所测结果与传统方法、无棱镜全站仪以及三维激光扫描仪所测结果进行对比分析。结果表明,测树枪所测精度与等高距呈线性关系,测树枪所测精度远高于传统方法,略低于无棱镜全站仪,低于三维激光扫描仪的精度,满足林业调查精度要求,可以在林业行业中推广使用。更多还原

【Abstract】 In order to achieve accurate measurements of individual tree crown volume,the paper describes tree crown volume measuring method by using hand-held gun measuring tree gun. By setting measuring station around measured trees to obtain coordinate points of each tree crown edge. The volume of tree crown has been calculated through contour line interpolation methods and integral algorithm. The comparison of traditional methods and hand-held measuring tree gun has been conducted. The results showed that measurement accuracy with hand-held measuring gun was higher than those by traditional methods,slightly lower than non-prism total station,less than the three-dimensional laser scanner,which meet the needs of forestry precision requirements.更多还原