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Title: Sustainability of wild pistachio (Pistacia atlantica Desf.) in Zagros forests, Iran

Author: Pourreza, Morteza; Shaw, John D.; Zangeneh, Hoshang;

Date: 2008

Source: Forest Ecology and Management. 255(11): 3667-3671.

Publication Series: Miscellaneous Publication

Description: Wild pistachio (Pistacia atlantica Desf.) is the most economically important tree species in many rural areas in the west of Iran. The species produces resin used for a wide variety of traditional uses. Because the resin can be harvested non-destructively, the trees are maintained until mortality occurs from natural causes. The result is that natural, managed stands include a variety of age classes. In recent years, a lack of smaller size classes has been observed in the Qalajeh forest, which is located in the Zagros Mountain region of western Iran.We established a series of plots in an area typical of Qalajeh forest to characterize the diameter distribution of the wild pistachio component. We confirmed a deficit of stems <30 cm dbh, based in the expectation that the landscape-level diameter distribution should be characterized by a negative exponential curve. For trees >30 cm dbh, de Liocourt's equation closely fit the diameter distribution (r2 = 0.93), translating to a q-factor of 1.34. We used this curve to estimate the deficit number of stems in diameter classes <30 cm. We estimate that this forest should have 19-24 wild pistachio trees/ha in the 5-25 cm classes, as compared to about 5 trees/ha found currently. Based on local conditions, we recommend that at least 30 seedlings/ha should be planted to allow 6-8 trees to reach to the 5 cm class

Keywords: diameter distribution, uneven-aged, stand structure, q-Factor, resin production, restoration, Zagros mountains

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Pourreza, Morteza; Shaw, John D.; Zangeneh, Hoshang 2008. Sustainability of wild pistachio (Pistacia atlantica Desf.) in Zagros forests, Iran. Forest Ecology and Management. 255(11): 3667-3671.

 


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