以2008年黑龙江省凉水国家级自然保护区航空相片及2009年森林资源连续清查数据为数据源,通过内定向、相对定向、绝对定向生成立体像对,并利用VirtuoZo NT软件中IGS数字化测图,对35个固定样地的3个针叶树种(红松、冷杉、云杉)提取树高与冠幅,并将提取数据与实测数据进行精度分析。结果表明:提取的树高和冠幅值具有一定的精度,其中树高平均精度为76%,冠幅的平均精度80%。基于以上提取结果,根据树高、冠幅和材积三者之间的关系,分别建立了3个树种的航空相片一元材积表和二元材积表。经检测,树高和冠幅因子与材积具有很好的相关关系。
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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基金
收稿日期:2012-03-27 修回日期:2012-11-11
基金项目:“十二五”国家科技支撑计划(2011BAD37B02); 中央高校基金科研业务费专项资助项目(DL09BA35)
第一作者:赵鑫,硕士生。*通信作者:赵颖慧,副教授。E-mail: zyinghui0925@126.com。
引文格式:赵鑫,李凤日,赵颖慧,等. 基于凉水地区航空相片的主要针叶树种材积表编制[J]. 南京林业大学学报:自然科学版,2013,37(2):65-70.
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