نوع مقاله : علمی - پژوهشی
نویسندگان
1 استادیار پژوهش، موسسه تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
2 استادیار بخش منابع طبیعی مرکز تحقیقات،آموزش کشاورزی . منابع طبیعی گیلان- معاون پژوهش و فناوری
3 کارشناس پژوهش، موسسه تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
This research was carried out in an unmanaged (934) and a managed (923) comportments of the Shafaroud region of northern old- growth beech forests of Iran. Gap characteristics such as gap area, gap fraction, gap frequency per hectare, DBH of gapmakers, frequency of gapmakers per gap and decay class of gapmakers were measured. Results showed that gap fraction of managed and unmanaged gaps were 13.5% and 9.06%, respectively. There were significant differences in frequency distributions of gap areas, DBH and gapmaker per gap between two study sites. Spatial pattern of gaps was random for both areas in 25m radius and beyond this distance aggregate pattern was determined. Based on this research, decrease of number of gap per hectare and increase of dead wood frequency and volume should be implemented in the next management practices.
کلیدواژه‌ها [English]
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