نوع مقاله : علمی- پژوهشی
نویسندگان
1 کارشناس ارشد، اداره کل منابع طبیعی نوشهر
2 کارشناس ارشد، اداره کل منابع طبیعی استان گیلان
3 استادیار، دانشگاه آزاد اسلامی، واحد چالوس
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Volumes of 122 trees were measured using both regular and 3P volume remeasurement methods. The trees were selected according to sampling instruction out of 800 trees which have been marked in district one (Shourab) at Golband forest. Results indicated that the calculated volume by 3P method for industrial wood was 12% more and for fuel wood 15% less than the regular method, respectively. The reasons of such results could be firstly, because of considering broken logs with dbh>20 cm during harvesting operations as industrial volume in the 3P method. Secondly, because of measuring the logs with more than 6m length in regular method that is effective on industrial volume decrease. For promoting harvesting section, we can change some part of administrative regular remeasurement instruction. Therefore, besides respecting to scientific implementation of this method, improving of staff skills and forest and timber products should be taken into account.
کلیدواژهها [English]