方法对比

	冠层覆盖度估算	林分材积测量
领域	林学	林学
方法族	Process / pipeline	Process / pipeline
起源年份	2000s	1960s–1980s
提出者	Jennings, Brown, Sheil, and colleagues	Classical forestry practice; formalized by Husch and colleagues
类型	Measurement and estimation pipeline	Measurement and calculation pipeline
开创性文献	Jennings, S. B., Brown, N. D., & Sheil, D. (2000). Assessing Forest Canopies and Understorey Illumination: Methods and Applications. Forest Ecology and Management, 129(1-3), 219–243.	Husch, B., Beers, T. W., & Kershaw, J. A. (2003). Forest Mensuration (4th ed.). John Wiley & Sons.
别名	Canopy closure measurement, Crown cover estimation, Overstory density assessment	Basal area inventory, Tree density measurement, Stand stocking assessment
相关	4	4
摘要	Canopy cover, or canopy closure, is the proportion of ground area covered by tree crowns when viewed from above, typically expressed as a percentage. Formalized by Jennings and colleagues in pioneering work on tropical forest structure, canopy cover estimation employs multiple methods—from field-based ocular assessment to sophisticated remote sensing and terrestrial LiDAR—providing essential data on forest structure, light availability, and habitat characteristics relevant to ecology, silviculture, and climate research.	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.