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Spatial Pattern and Characteristic of Tree-fall Gaps to Approach Ecological Forestry in Northern Iran | ||
| Environmental Resources Research | ||
| مقاله 5، دوره 5، شماره 1، فروردین 2017، صفحه 51-61 اصل مقاله (1.42 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22069/ijerr.2017.10249.1127 | ||
| نویسندگان | ||
| Mohamad Hadi Moayeri1؛ Alireza Hajivand2؛ Shaban Shataee Joybari3؛ Saeed Rahbari Sisakht* 4 | ||
| 1Associate Professor of Forestry, Faculty of Forestry and wood technology, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran | ||
| 2Ms graduate of forestry, Faculty of Forestry and wood technology, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran | ||
| 3Associate Professor of Forestry, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran | ||
| 41- Faculty of Forestry and Wood Technology, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran | ||
| چکیده | ||
| Gaps created by falling trees (tree-fall gaps) are a natural disturbance in forest ecosystems. Understanding scale, pattern and the effect of gaps on regeneration is important to current and future forest management. The aim of this study was to determine the size, shape and the spatial pattern of tree-fall gaps and of associated regeneration. This study was carried out in three parcels (No.15, 18 and 19) of second District Shastkalateh forest in northern Iran. The size, location and regeneration of all tree-fall gaps were measured in these parcels. One way ANOVA was used to compare gap features and regeneration and Spearman’s rank correlation coefficient was used to test the relationship between gap size and regeneration density. The results showed that the total area of gaps created by tree-fall in three parcels was 13.72 ha, or 7.4% of the total area, and on average there were 1.06 gaps per hectare. Gap size ranged from 49 m2 to 1827m2, with mean gap size being 658.2m2. Most (69.2%) gaps were 200 m2 to 1000 m2. Results of spatial pattern analysis showed both uniform and irregular shapes for gaps in three parcels. ANOVA analysis showed a statistically significant difference between gap size and regeneration density and the Spearman rank correlation showed a direct relationship between gap size and the number of seedlings. These results provide information to enable forests to be managed according to ecological principles. | ||
| کلیدواژهها | ||
| Spatial pattern؛ Treefall Gaps؛ Ecological forestry؛ QCM؛ Biodiversity | ||
| مراجع | ||
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