METHOD TO EVALUATE NATURAL REFORESTATION Russian patent published in 1997 - IPC

FIELD: agriculture, forestry. SUBSTANCE: before or after conducting massive by-sections cutting to safe seedlings an average age of seedlings and mature stock of corresponding trees should be determined under certain locality conditions. Perspectivity of natural reforestation is evaluated according to relative oppression period estimated as the ratio of the first value to the second one. It is considered to be promising if the ratio obtained is not higher the normal one established by experimental data. In the case of increased value all calculations and evaluations should be done according to the lowest height values of seedling. EFFECT: higher accuracy. 3 cl