JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2013, Vol. 37 ›› Issue (02): 65-70.doi: 10.3969/j.issn.1000-2006.2013.02.012

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The development of conifer volume table based on aerial photograph in the Liangshui region

ZHAO Xin, LI Fengri, ZHAO Yinghui*, JIA Weiwei, DONG Lihu   

  1. College of Forest, Northeast Forestry University, Harbin 150040,China
  • Online:2013-04-18 Published:2013-04-18

Abstract: This paper took aerial photos of Heilongjiang Liangshui National Natural Reserve in 2008 and inventory data of forest resource in 2009 as data source, our produced stereo pair through interior orientation, relative orientation and absolute orientation, and we made use of IGS digital surveying and mapping in VirtuoZo NT software using tree height and crown diameter for three coniferous species(Pinus koraiensis, Abies nephrolepis, Picea asperata Mast)in 35 fixed sampling sites, and made precision analysis of the selected data and measured data. As a result, average precision of selected tree height was 76%, and average precision of selected crown diameter was 80%. Based on the above selected precision and the relationship among tree height, crown diameter and volume of timber, this paper respectively established single volume table and binary volume table for aerial photos of three tree species. The test showed that the relationship between tree height, crown diameter factor and volume of timber was well related. Therefore, it was of practical significance for compiling tree volume table of aerial photos by using aerial photos in the northeast virgin forest.

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