TY - JOUR T1 - Diameter Increment of Maple Tree (Acer velutinum Boiss.) in Plantations in Mazandaran (Case Study: Pahnekola Region) TT - رویش قطری افرا پلت (Boiss. Acer velutinum) در توده های دست کاشت مازندران (مطالعه موردی: منطقه پهنه‌کلای ساری) JF - ifej JO - ifej VL - 1 IS - 2 UR - http://ifej.sanru.ac.ir/article-1-118-en.html Y1 - 2013 SP - 86 EP - 94 KW - Maple Tree KW - Pahnekola KW - Meyer KW - s method KW - Diameter Increment N2 - In order to investigation the diameter increment of maple tree (Acer velutinum Boiss.) plantations in Mazandaran province , 4.9 hectares of the planted stands in Talokola nursery were selected. A total of 24 trees were randomly selected and increment core were prepared. Calculation of diameter increment was done using meyer,s method. Relationship between incremental quantitative variables was revealed. The results showed that mean annual increment of diameter and stand product of the maple tree in considerable stand was 8.36 mm and 145.4 silve.h-1 respectively. M3 ER -