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Abstract

For quantitative and qualitative investigation of Juniperus polycarpus forests, its stands in Kopedagh hillsides in Khorasan province were selected. The maps of slope, aspects and elevation were prepared and combined togather with GIS and landform units map were made. Due to beeter results of phiiography method in land zooning and due to less standard deviation and suitable equality of stratification method, these methhods were used in this research. Due to need to at least 3 replications for compare means tests and impassable situation of study area 3 sample plots ( as 3 replications) with 2500 m2 area were selected systematically randomly per land form unit and in totaly 45 sample plots were selected. The parameters inclodes diameter at breast height, total height, crown height, crown surfaces were recorded and other parameters including number of trees per hectares, basal area, medium basal area, D/H ratio, CH/Ct ratio, regeneration, health and vigor trees percent were indicated. The results show the considered stands are uneven age stands. The stands of the study are are more sparse than other Juniperus stands of Iran and its number of trees per hectare is less than others. The crown cover is low and the distance between trees in some area of the study area is so long that it can not named as forest area. Destruction, shallow and under erosion soil and recent famine caused phiological weakness and increased the potential of illness by disease and pests.

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