手法を比較

	林分断面積測定	樹高測定
分野	林学	林学
系統	Process / pipeline	Process / pipeline
提唱年	1960s–1980s	1950s–2000s
提唱者	Classical forestry practice; formalized by Husch and colleagues	Bitterlich and classical forestry mensuration
種類	Measurement and calculation pipeline	Measurement pipeline
原典	Husch, B., Beers, T. W., & Kershaw, J. A. (2003). Forest Mensuration (4th ed.). John Wiley & Sons.	Bitterlich, W. (1984). The Relascope Idea: Relative Measurements in Forestry. Commonwealth Agricultural Bureaux.
別名	Basal area inventory, Tree density measurement, Stand stocking assessment	Dendrometric height, Tree elevation measurement, Stand height determination
関連	4	4
概要	Stand basal area is a fundamental forest mensuration metric representing the total cross-sectional area of tree stems per unit land area, typically expressed in square meters per hectare. Formalized across twentieth-century forestry literature (notably by Husch, Beers, and Kershaw), basal area serves as a key indicator of forest density, biomass accumulation, and competitive pressure, essential for yield prediction and stand management planning.	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.