Growth and production models of Populus nigra cv italica in Argentine Patagonia windbreaks

PERI P.L.; MARTINEZ PASTUR G.

Antalya (Turquía)

Congreso; XI World Forestry Congress; 1997

FAO

The principal disadvantages for the agricultural development in south Patagonia is the wind and an alternative are the installation of windbreaks that allows the implantation of tree fruits, pastures and horticultural crops. The prediction of height growth dynamic allows the estimating of the area protected by the windbreak, while it could be possible to establish the economic efficiency of timber wood through the prediction of the volumetric growth and the crown dynamics. The aim of this work was fit biometric models for P. nigra cv italica windbreaks for several sites and plantation conditions. Total volume with bark, site index (11.5 to 21.5 m SI40), DBH growth (two inter tree distances and two crown classes) related to age and site index, and crown dynamic equations were presented. The developed models possess very good biological significance, because the multiple factors that influence in the windbreak growth could be explained through easy mensuration variables. These models offer a simple tool for the agricultural and  forest planning for crop protection and wood production of the windbreak in south Patagonia.