手法を比較

	年輪年代学	花粉分析学
分野	農学	農学
系統	Process / pipeline	Process / pipeline
提唱年	1909	Early 20th century (von Post 1916; formal discipline consolidated by mid-20th century)
提唱者	Andrew Ellicott Douglass	Multiple contributors (Lennart von Post pioneered quantitative pollen analysis ~1916)
種類	Archival and climate reconstruction method	Laboratory pipeline — morphological identification and quantitative counting
原典	Douglass, A. E. (1909). Weather records in the growth of giant sequoias. Monthly Weather Review, 37(1), 713-714.	Faegri, K., & Iversen, J. (1989). Textbook of Pollen Analysis (4th ed.). Wiley. ISBN: 978-0471919681
別名	Tree-ring analysis, Chronology, Paleoclimatology	pollen analysis, spore analysis, palynostratigraphy, aerobiology pollen study
関連	3	0
概要	Dendrochronology is the science of dating and interpreting wood and climate from tree rings. Each annual ring records the tree's growth response to weather during that year: wide rings indicate favorable conditions (adequate water, warmth, light); narrow rings indicate stress (drought, cold, shade). By crossmatching ring-width patterns across trees and backward in time using dead wood, researchers construct chronologies extending centuries to millennia, providing archives of regional precipitation, temperature, and hydroclimate independent of instrumental records.	Palynology is the scientific study of pollen grains and plant spores — microscopic structures that are chemically resistant and preserve well in sediment, soil, peat, ice, and other matrices. In agronomy, palynology is applied to reconstruct past vegetation and land-use histories, monitor crop pollination dynamics, trace the botanical origin of honey, assess aeroallergen loads, and support plant breeding programmes. It bridges botany, ecology, archaeology, and environmental science.