Generation of crown bulk density for Pinus sylvestris L. from lidar

被引:121
作者
Riaño, D
Chuvieco, E
Condés, S
González-Matesanz, J
Ustin, SL
机构
[1] Univ Calif Davis, Dept Land Air & Water Resources, CSTARS, Davis, CA 95616 USA
[2] Univ Alcala de Henares, Dept Geog, E-28801 Alcala De Henares, Spain
[3] Univ Politecn Madrid, ETS Ingn Montes, Dept Econ & Gestion Forestal, E-28040 Madrid, Spain
[4] Inst Geog Nacl Expanol, Serv Geodesia, Madrid 28003, Spain
关键词
lidar; forest canopy structure; crown bulk density; tree height; crown base height; foliage biomass; crown volume; wildland fire modeling;
D O I
10.1016/j.rse.2003.12.014
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The use of lidar data to estimate critical variables needed for modeling wildfire behavior was tested on a Scots pine forest (Pinus sylvestris L.) in central Spain. Lidar data accurately estimated crown bulk density at the plot level (r(2)= 0.80). Lidar data could be used to directly estimate crown volume (r(2) = 0.92) and foliage biomass (r(2) = 0.84), which together produced better results than directly fitting the lidar data to crown bulk density. Incorporating equations that relate tree diameter at breast height and other forest parameters improved estimates of foliage biomass. Individual tree level analyses were not completely successful due to difficulty in accurately assigning laser pulses to the correct tree (r(2) = 0.14). (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:345 / 352
页数:8
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