Publication year: 2010 Source: Agriculture, Ecosystems & Environment, In Press, Corrected Proof, Available online 23 November 2010 Andrew J., Wall , Peter D., Kemp , Alec D., Mackay , Ian L., Power This study compares the ability of several poplar (Populus spp.) stand parameters to predict photosynthetically active radiation (PAR) transmission through the overstorey canopy in a silvopastoral system. As an indirect measure of PAR transmission, diffuse non-intercepted radiation (DIFN) levels underneath fully foliated poplar stands were measured in two climatically contrasting regions of the North Island of New Zealand. The ability of several easily measured stand inventory parameters to predict understorey DIFN was then evaluated using regression analysis.

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Evaluation of easily measured stand inventory parameters as predictors of PAR transmittance for use in poplar silvopastoral management

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