作者: M.A. Sattler , S. Sharpies
DOI: 10.1016/B978-0-08-034315-0.50710-2
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摘要: ABSTRACT This study investigates how parameters such as crown density, sky condition, seasonal changes in phenology and temporal variations solar altitude affect the amount of radiation transmitted through a tree stand. Most experimental results refer to full-scale measurements transmission crowns, with aid solarimeters. Some additional data were obtained photographic technique. Average values by two techniques compared found agree favourably.