Σύγκριση μεθόδων

	Κλασματική Εμβαδόν Ανοίγματος Κόμης	Καμπύλη Δείκτη Τοποθεσίας
Πεδίο	Δασολογία	Δασολογία
Οικογένεια	Process / pipeline	Process / pipeline
Έτος προέλευσης	1979	1954
Δημιουργός	John Norman	Joseph Westveld
Τύπος	measurement pipeline	productivity index
Θεμελιώδης πηγή	Machado, J.-L., & Reich, P. B. (1999). Evaluation of several measures of canopy openness. Canadian Journal of Forest Research, 29(9), 1439–1444.	Clutter, J. L., Fortson, J. C., Pienaar, L. V., Brister, G. H., & Bailey, R. L. (1983). Timber Management: A Quantitative Approach. John Wiley & Sons.
Εναλλακτικές ονομασίες	gap fraction, canopy openness	site productivity, growth intercept
Συναφείς	2	1
Σύνοψη	Canopy gap fraction quantifies the proportion of sky visible through the forest canopy, expressed as a percentage. Developed to measure light availability in the understory, it is a standard metric in forest ecology for characterizing canopy structure and microhabitat conditions. This measure is essential for understanding light-limited photosynthesis and seedling establishment in closed-canopy forests.	A site index curve is a family of curves relating tree height to stand age, used to quantify the productivity of a forest site. Site index is conventionally defined as the height of dominant trees at a reference age (typically 50 years in temperate forests). These curves enable foresters to classify sites by productivity class and to predict growth rates for planning timber harvests and silvicultural treatments. Site index curves are among the most fundamental tools in forest growth and yield modeling.