نوع مقاله : علمی - پژوهشی
نویسندگان
1 استادیار، گروه علوم و صنایع چوب و کاغذ، دانشکدۀ فناوری کشاورزی و منابع طبیعی، دانشگاه محقق اردبیلی، اردبیل
2 استاد، گروه جنگلداری و اقتصاد جنگل، دانشکدۀ منابع طبیعی، دانشگاه تهران، تهران
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Understanding and our knowledge about mixed beech stands development play key role in managing forest stand in the close to nature ways. There are differences in amount and quality of coarse woody debris reported from beech stands in the north of Iran. This research try to answer this questions: how amount and quality of coarse woody debris affected by stand development stages? So 30 one hectare sampling plots randomly were chosen in main three stand developmental stages and all coarse woody debris had been measured. Results showed that the volume of CWD followed the general “U-shaped” temporal trend: the highest in the Volume transition stage (42.2 m3 ha-1), lowest in the volume accumulation (12.8 m3 ha-1) and intermediate in the Volume growing up stage (27.8 m3 ha-1). Amount of oriental beech coarse woody debris was (log, snag and stump) significantly higher in three stages. Amount of beech volume, logs, size class III and decay class I and IV significantly differ among the three stages. Our results revealed that stand development have effect on the distribution of CWD among three stages.
کلیدواژه‌ها [English]
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