Abstract
Aim of study: This research attempts to quantitatively describe the pollarding process in the northern Zagros, western Iran.Material and methods: An inventory of all trees was conducted in three representative stands in the pollarded section (DBH ≥ 5 cm): DBH, total height, trunk height and crown diameters were measured. At the time of pollarding, 10% of the foliage stacks were randomly selected and weighed. The positions of each store tree (i.e. special trees capable of enduring the weight of a certain number of leafy branches (average 600 kg)) and horizontal distance of pollarded trees associated with each store tree was recorded.Main results: The number and weight of foliage stacks resulting from pollarding of each tree correlated (0.48 and 0.43, respectively) with their crown diameter. The average dry weight of leaf biomass was 1,525.6 ±108.1 kg/ha and there was a significant difference between the selected stands. The average pollarded area and the average number of trees in the pollarded area of each store tree was 501.1±210.4 m2 and 9.4±3.5 trees, respectively.Research highlights: The number of pollarded trees associated with each store tree and the weight of stored foliage stacks on them are determined by the distance between pollarded trees and store trees, the number of trees around the store trees and the ability of selected store trees to bear the weight of foliage stacks.
Highlights
Pollarding for providing tree fodder for livestock and/or wood for fuel or other uses is an ancient practice (Smith et al, 2012)
The fraction of companion species (Q. brantii, Pyrus spp. and Pistacia atlantica) was 4.4% and 3.3% of the all studied stands based on tree number and basal area per hectare, respectively
In this study we are addressing a quantitative description of the pollarding process in the northern Zagros, western Iran
Summary
Pollarding for providing tree fodder for livestock and/or wood for fuel or other uses is an ancient practice (Smith et al, 2012). Pollarding was common in nonMediterranean Europe, i.e., Pyrenees, Alps and Basque country (Read, 2006). This tree management system is still found in Greece, Crete and Sicily (Eichhorn et al, 2006). At the present time pollarding has been abandoned in Azerbaijan province and forests around Marivan city in Kurdistan province. It is conducted only in forests around of Baneh city in Kurdistan province where it is still an important practice and it is transferred from father to son without any change. In the forests of Baneh pollarding is supported by a fruitful traditional knowledge package
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