Frontiers of Forestry in China >

2009 , Vol. 4 >Issue 3: 297 - 303

DOI: https://doi.org/10.1007/s11461-009-0039-x

Research articles

Dynamic emulation of the effect from a single tree to lower solar radiation distribution

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  • 1.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 2.College of Forestry, Northwest A&F University, Yangling 712100, China;

Published date: 05 Sep 2009

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Abstract

By modeling the condition of light climate, we studied the negative effect of shadows in a shelterbelt forest. Based on the calculation of the apparent trajectory of solar motion according to an ellipsoid crown projection model and a Monsi light transmission model, radiation values of 36 experimental sites were measured using a light quantum meter. Estimates of daily solar radiation distribution from measured values were obtained. We built a crown projection model and simulated the conditions of a light climate in the forest. The trajectory of the shadow motion is shaped like a butterfly arc. The situation of the outside is affected by tree height (H) and that of the inner arc by height below the branches. In an area of 1.0 ×

Key words： protection forest; Populus tomentosa Carr; variation in shadows; solar radiation distribution; dynamic emulation

Cite this article

Bin FANG , Qingke ZHU , Wei QIN , Wenhua LI , . Dynamic emulation of the effect from a single tree to lower solar radiation distribution[J]. Frontiers of Forestry in China, 2009 , 4(3) : 297 -303 . DOI: 10.1007/s11461-009-0039-x

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