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首页> 外文期刊>Journal of Forest Planning >Estimating Timber Stock of Ehime Prefecture, Japan using Airborne Laser Profiling
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Estimating Timber Stock of Ehime Prefecture, Japan using Airborne Laser Profiling

机译：使用机载激光轮廓分析估算日本爱媛县的木材库存

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摘要

The timber stock of mainland Ehime prefecture was estimated using airborne laser profiling data. Our provisional analysis revealed that: 1) at 5,435km~2, the laser estimate of land area obtained as a simple product of flight path length and its 4km width was fairly consistent with the figure of 5,455km~2 by the Geographical Survey Institute, considered the most reliable of the government statistics; 2) on the other hand, at 176 million m~3 for the entire prefecture our estimate of standing timber stock turned out to be twice as much as the government figure of 87 million m~3; 3) judging from the precision in land-area estimation and results from other research, our estimate is considered more likely to represent the actual timber stock than the government figure; 4) thus airborne laser altimetry would provide more accurate national forest carbon budget for the Kyoto Protocol than does the existing national forest inventory; 5) at the present density of laser profiling transects, 4km apart from eachother, however, no reasonable accuracy is expected at the municipality level.
机译：使用机载激光轮廓分析数据估算了爱媛县内陆的木材存量。我们的临时分析显示：1）在5,435km〜2处，作为飞行路径长度及其4km宽度的简单乘积获得的土地面积的激光估算与地理调查局的5,455km〜2的图相当一致，被认为是最可靠的政府统计数据; 2）另一方面，我们估计整个州的木材总蓄积量为1.76亿立方米3，是政府数字8700万立方米3的两倍。 3）从土地面积估算的精度和其他研究的结果来看，我们的估算被认为比政府数字更能代表实际的木材库存; 4）因此，机载激光测高仪将为《京都议定书》提供比现有国家森林清单更为准确的国家森林碳预算; 5）在目前的激光轮廓样条密度相距4 km的情况下，但是，在市政一级，预期没有合理的精度。

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