手法を比較

	樹高測定	アロメトリーバイオマス方程式
分野	林学	林学
系統	Process / pipeline	Process / pipeline
提唱年	1950s–2000s	1990s–2010s
提唱者	Bitterlich and classical forestry mensuration	Chave, Niklas, and forest biometricians
種類	Measurement pipeline	Model development and application pipeline
原典	Bitterlich, W. (1984). The Relascope Idea: Relative Measurements in Forestry. Commonwealth Agricultural Bureaux.	Chave, J., Andalo, C., Brown, S., et al. (2005). Tree Allometry and Improved Estimation of Carbon-Stock and Density in Tropical Forests. Oecologia, 145(1), 87–99.
別名	Dendrometric height, Tree elevation measurement, Stand height determination	Biomass allometry, Regression-based biomass prediction, Diameter-to-biomass conversion
関連	4	4
概要	Tree height measurement—determining the vertical distance from ground to tree top—is a cornerstone of forest inventory and biomass estimation. Ranging from classical optical instruments (clinometer, Abney level) to modern laser hypsometers and airborne LiDAR, tree height quantification enables calculation of volume, biomass, site index (productivity), and forest structural characterization essential for management, research, and carbon accounting.	Allometric equations predict tree above-ground or total biomass from easily measured tree dimensions—typically diameter at breast height (DBH), height, and wood density. Grounded in biological allometry (scaling laws) and codified by Chave, Niklas, and others, allometric equations are essential tools for rapid biomass assessment without tree harvesting. Used globally for carbon accounting, yield estimation, and ecosystem characterization.