2024 : 5 : 19
Loghman Ghahramany

Loghman Ghahramany

Academic rank: Associate Professor
ORCID:
Education: PhD.
ScopusId: 57188921659
Faculty: Faculty of Natural Resources
Address: Dept. of Forestry, Faculty of Natural Resources, University of Kurdistan, Sanandaj, IRAN, P.O. Box 416, Postal Code 66177-15175
Phone: (+98) 8733627724-6 (Ext. 3368)

Research

Title
Monitoring of Changes in the Biometric Indices of Pollarded Oak Trees in Pollarding Process in ‎Northern Zagros Forest
Type
Presentation
Keywords
Iran, Biometric indices, Store tree, northern Zagros
Year
2018
Researchers Loghman Ghahramany ، Halimeh Jahani ، Hedayat Allah Ghazanfari

Abstract

In common traditional forest management (pollarding) in Armardeh, Baneh, ‎Kurdistan province, Iran, each rural household usually owns an area of forest ‎‎(locally called Galajar). The households divide their forest stands (i.e. Galajar) ‎into three or four parts called shanegala and they sequentially pollard within ‎three or four years period. ‎ The main objective of this traditional forest management is to produce ‎fodder for livestock animals. The assessment of changes in biometric indices of ‎oak trees due to pollarding, estimating the amount of forage production in the ‎pollarding process and the description of traditional pattern of pollarding in ‎Galajars (number and pollarded area of store trees) are the objectives of this ‎research. ‎ This study was conducted in the two selected pollarded stands (Galajars). ‎Data were collected from the selected stands in two stages. First, before ‎pollarding (in August 2016), the locations and boundaries of the stands and ‎their sections were separately determined using a GPS device. An inventory of ‎all trees (DBH ≥ 5 cm) was conducted in the section to be pollarded (i.e. the ‎khert section) in each stand: dbh, total and trunk heights and crown diameters ‎in two perpendicular directions were measured and all trees were numbered. In ‎the second stage of data collection (early September 2016), at the time of ‎pollarding by local foresters, dbh, total and trunk heights, and crown diameters ‎in two perpendicular directions were measured again and the total number of ‎harvested foliage stacks and pollarded trees were counted and 10% of the ‎foliage stacks of each pollarded tree were randomly selected and weighed using ‎a digital scale (10 g accuracy). The positions of each store tree and all ‎pollarded trees whose foliage stacks were stored on each store tree were ‎recorded using GPS. Horizontal distance of trees belonging to the nearest store ‎tree was measured. ‎ Results indicated that in pollarding process, the most changes occurred in ‎crown area index. The weight of foliage stacks accumulated on each store tree ‎and maximum transport distance of foliage stack to store tree in fist stand were ‎‎460.0 kg and 28 m, respectively, while for second stand, these indices were ‎‎463.6 kg and 41.5 m, respectively.‎