手法を比較

	年輪年代学の方法	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	1901–1929	1990s–2010s
提唱者	Andrew Ellicott Douglass	Chave, Niklas, and forest biometricians
種類	Historical and climatic inference pipeline	Model development and application pipeline
原典	Fritts, H. C. (1976). Tree Rings and Climate. Academic Press.	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	Tree-ring dating, Dendrochronological analysis, Ring-width chronology	Biomass allometry, Regression-based biomass prediction, Diameter-to-biomass conversion
関連	4	4
概要	Dendrochronology is the science of dating and analyzing tree rings to reconstruct past climatic conditions, chronologies, and tree growth patterns. Pioneered by Andrew Ellicott Douglass in the early twentieth century and formalized by Fritts and colleagues, dendrochronology enables precise dating of historical wood samples and generates millennial-length climate records, becoming indispensable for paleoclimatology, archaeology, and forest ecology.	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.