Research of poplar canopy simulation and radiation transfer based on virtual plant

In the research field of virtual plant,the canopy simulation has very practical application values,including the simulation of branches in the canopy,and the simulation of leaf blade,and the calculations of solar radiation transmission,light transmittance,leaf area and other characteristics based on results of the canopy geometry simulation.In this paper,based on virtual poplar model in farmland shelterbelt,firstly applied mathematics function graphically to simulate the trunk and branches of a virtual poplar,then used the ray method to simulate leaf blades of poplar,finally finished the simulation of the whole poplar.In the process of the simulation of the virtual poplar,by recording the related information,this paper calculated the radiation transfer of the poplar canopy.Results of the research showed important theory values for benefit evaluation of farmland shelterbelt and the improvement of agro forestry system resource utilization.

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