id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_3afysysssvbw7crlvceynxh4uy	A. Guevara-Escobar	Use of Digital Photography for Analysis of Canopy Closure	2005.0	11	.pdf	application/pdf	6629	575	67	analysis of images obtained using digital cameras with contrasting performance, a Kodak DC-120 and a estimates obtained with a photographic method using the Kodak camera. within the LAI-2000 used to estimate CC affected agreement between the photographic method and the If image analysis of digital photographs can provide reliable estimates of CC with estimates of CC obtained with the methods tested was calculated for each ground point (d). Canopy closure (CC) estimated by analysis of digital photographs taken with a zoom lens set to 50 mm focal length or the Bias between the Kodak camera and LAI-2000 estimates of CC was �0.07±0.038. Relationship between CC estimated by analysis of digital photographs taken at three sites in Mexico using two cameras with rings of the LAI-2000 canopy analyser and a Canon EOS D1 camera with the lens set at different focal lengths. The photographic and LAI-2000 methods provided similar estimates of CC except in Tests 2 and	./cache/work_3afysysssvbw7crlvceynxh4uy.pdf	./txt/work_3afysysssvbw7crlvceynxh4uy.txt