:: Volume 4, Issue 9 (3-2017) ::
PEC 2017, 4(9): 133-150 Back to browse issues page
A survey topographic factors affecting on growth parameters and establishment of sumac shrubs (Rhus coriria) in rangelands of East Watershed basin (Case Study: Kakhk Watershed of Gonabad County)
Abstract:   (3410 Views)

This paper studied thein the mountain rangelands in Gonabad, Khorasan-  province. ​​vegetation sampling was conducted using random-systematic method. In this study, the effects of altitude, slope and aspects were studied on the quantitative characteristics such as species density, maximum trunk diameter, maximum crown diameter, height and age shrub and qualitative characteristics such as regeneration, vitality and understory condition. The results showed that the topography, especially altitude and slope, has significant effect on growth quantitative and qualitative characteristics of sumac shrubs, in the Kakhk Watershed. So that, the quantitative and qualitative characteristics of sumac shrubs at the altitudes above 2,000 meters above sea level, are better than the altitudes of lower than 2000 meters above sea level. Also, vitality, regeneration and understory condition in north and east aspects are better than the other directions.

Keywords: Altitude, Aspect, Crown Cover, Vitality Condition, Rhus coriria, Kakhk Watershed
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Type of Study: Research | Subject: Special
Received: 2016/08/28 | Accepted: 2017/03/6 | Published: 2017/05/18

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Volume 4, Issue 9 (3-2017) Back to browse issues page