TY - JOUR ID - 20085 TI - Investigation comparison of K-Ripley and distance indices in order to determinate of spatial pattern of Quercus Brantii Lindl. in Zagros forests JO - Forest Research and Development JA - JFRD LA - en SN - 2476-3551 AU - Mirzaei, Mehrdad AU - Bonyad, Amir Eslam AU - Aziz, Jalal AD - Faculty of Natural Resources, University of Guilan AD - Forestry department, Faculty of Natural Resources, University of Guilan Y1 - 2016 PY - 2016 VL - 1 IS - 3 SP - 231 EP - 240 KW - Spatial pattern KW - Persian oak KW - Choghasabz KW - K-Ripley index KW - distance indices DO - N2 - One of the main components of forest stand structure is spatial pattern and positioning of trees next to each other. Stand’s spatial patterns are measured and mapped by measuring tree locations in the stand and entering each coordinates into analytical frameworks. The aim of this study was to compare K-Ripley and distance indices in order to determine spatial pattern of Quercus Brantii in Choghasabz forests of Ilam. Using systematic-random sampling with 100×100m dimensions, 53 samples were selected. K-Ripley index and Hopkins, Hinez, Eberhart and C distance indices were used to analyze the spatial pattern in the area. Results of K-Ripley index showed that spatial pattern of oak trees in the study area are random pattern. But the results of Hopkins, Hinez, Eberhart and C distance indices showed a clumped pattern for Quercus brantii in the study area. UR - https://jfrd.urmia.ac.ir/article_20085.html L1 - https://jfrd.urmia.ac.ir/article_20085_c213a50644102bc85d3b3742f08dd650.pdf ER -