تعيين الگوي پراكنش مكاني گونه ملج در جنگلهاي شمال ايران (مطالعه مورد در جنگل آموزشي و پژوهشي خيرودكنار، نوشهر)

An Investigation of Spatial Pattern in Wych Elm (Ulmus glabra) in Hyrcanian Forest, Case Study: Kheyroudkenar Forest, Noshahr

The current research on wych elm was performed in Kheyroudkenar Forest, Noshahr. To detect the spatial pattern, Mean Square method was employed. Initially the locations of Wych elm individuals were recorded through GPS equipment, then transferred into Computer. For the design of grids with different sizes as well as Marking points on them. Arcview, Arcinfo and Idrisi softvares were applied. The results indicated that Wych elm exhibits a pattern intermediate between random and clumped. This is the existing pattern of Ulmus glabra, because probably its real pattern has been changed due to Dutch elm disease as well as due to illegal cuttings.