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	基于航空影像的沙漠典型灌木数字测量
其他题名	Digital Measurement for Typical Desert Shrubs Based on Aerial Images
	胥利红; 李凤日
ISSN	1000-5382
出版年	2009
卷号	37 期号:9 页码:86-90
中文摘要	基于内蒙古乌兰布和沙漠拍摄的1: 5000数字航空相片,利用全数字摄影测量工作站VirtuoZo系统IGS数字测图方法,选择研究区具有典型代表性的稀少且呈群团状的灌木白刺(Nitraria tangutorum)为对象,在建立的立体像对上进行测量,获得了沙丘上白刺高度、东西直径、南北直径、面积、周长和覆盖度6个因子的内业图测数据,并与外业实测数据进行了比较:面积的精度为71.7%,其他5项均大于90%,精度较高;同时分析了内业测图误差原因.结果表明:利用航片进行沙漠地区三维立体植被测量方法可行,内业测量精度达到了林业调查的要求.太阳方位角和判读员的经验是影响测量精度的主要因素.
英文摘要	A method of digital mapping was discussed by using the VirtuoZo system of all-digital photogrammetry workstation based on 1:5000 digital aerial photographs of Ulan Buh Desert in Inner Mongolia. Typical desert species of shrub, Nitraria tangutorum, was selected for measuring the generated image stereo pairs. And indoor mapping measurement data of six indexes, including height, east-west and north-south diameters, area, perimeter, and degree of coverage, were obtained and compared with the outdoor measured data. The precision of area was 71.7 percent, and the precisions of other five indexes were all more than 90 percent. Moreover, the reasons for indoor mapping error were analyzed. Results show that the method for three-dimensional vegetation measurement in desert region is feasible using aerial photographs, and the indoor measurement accuracy could meet the requirement of forest survey; while solar azimuth angle and the experience of interpreters are the major factors affecting the accuracy.
中文关键词	立体像对 ; IGS数字测图 ; 白刺(Nitraria tangutorum)
英文关键词	VirtuoZo VirtuoZo Stereo pairs IGS digital mapping Nitraria tangutorum
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:3676541
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/223473
作者单位	东北林业大学, 哈尔滨, 黑龙江 150040, 中国
推荐引用方式 GB/T 7714	胥利红,李凤日. 基于航空影像的沙漠典型灌木数字测量[J],2009,37(9):86-90.
APA	胥利红,&李凤日.(2009).基于航空影像的沙漠典型灌木数字测量.,37(9),86-90.
MLA	胥利红,et al."基于航空影像的沙漠典型灌木数字测量".37.9(2009):86-90.

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