METHOD OF TREE GAIN DEFINITION BY SAW CUT DEPENDING ON PREVAILING WINDS Russian patent published in 2008 - IPC A01G23/00 

FIELD: agriculture.

SUBSTANCE: method includes drawing on the cut circles of marks about a North side, calculation of number and width of annual rings concerning the centre of annual layers. Circles of wood with a bark cut at trunk root neck level of a modelling tree or at height of 1.3 m. Then in separate radial directions saw cut radiuses in a bark or without a bark are measured, angles from northern direction to vertical axes of trunks of the next trees are measured. Further on circles center-to-center lines of the next trees arrangement are put. Under preliminary executed diagramme of prevailing winds distribution, made on long-term meteorological data, on a fronts line circle the effect of prevailing winds are put. From the general number of prevailing wind front lines are excluded those on what center-to-center lines with a modelling tree of the next trees line have appeared in a zone of. On the prevailing wind front lines not shaded by the next trees the saw cut radiuses in a bark and without a bark are measured, and also annual rings and their groups. Then on a difference of contour radiuses of the saw cut form in a bark or without a bark and a circles of the prevailing wind front lines not protected by the next trees a wood gain is defined with a bark or without it depending on influence of power effect of prevailing winds getting to modelling tree.

EFFECT: quality improvement of tree gain definition.

4 cl, 2 dwg