The Effects of Airborne LiDAR Po in t Den sity on Forest Height Estimation

PANG Yong; LI Zeng-yuan; TAN Bing-xiang; LIU Qing-wang; ZHAO Feng; ZHOU Shu-fang

This paper takes Culaishan Forest Farm, Shandong Province, and Tieshanp ing Forest Farm, Chongqing,as test sites. The airborne discrete return LiDAR data were collected in May of 2005 and Sep tember of 2006seperately. The forest heightwas estimated for both test sites. Through the camparison of the two sites, the effects ofairborne L iDAR point density on forest height estimation were analyzed. The results demonstrated that itwas feasibleto use low and high point density airborne L iDAR data to estimate forest height. Quartiles could give good treeheight estimation in the low L iDAR point density case. The accuracies from high density L iDAR data showeds onlya little better than low density data. The high density data could be used to estimate finer scale forest height evenindividual tree height, which is helpful to minimize necessity of the number filed p lots.

1. Research Institute of Forest Resource Information Techniques, CAF, Beijing　100091, China

Received Date: 2007-12-09

Abstract: This paper takes Culaishan Forest Farm, Shandong Province, and Tieshanp ing Forest Farm, Chongqing,as test sites. The airborne discrete return LiDAR data were collected in May of 2005 and Sep tember of 2006seperately. The forest heightwas estimated for both test sites. Through the camparison of the two sites, the effects ofairborne L iDAR point density on forest height estimation were analyzed. The results demonstrated that itwas feasibleto use low and high point density airborne L iDAR data to estimate forest height. Quartiles could give good treeheight estimation in the low L iDAR point density case. The accuracies from high density L iDAR data showeds onlya little better than low density data. The high density data could be used to estimate finer scale forest height evenindividual tree height, which is helpful to minimize necessity of the number filed p lots.

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Reference (10)

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The Effects of Airborne LiDAR Po in t Den sity on Forest Height Estimation

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