AN INVESTIGATION OF THE STRUCTURE OF NATURAL CASPIAN BEECH (FAGUS ORIENTALIS LIPSKY) STANDS IN GORAZBON-KHEYROUDKENAR DISTRICT

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FALAH A.; ZOBEYRI MAHMOUD; JAZIREI M.H.; MARVI MOHAJER M.R.

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Journal: IRANIAN JOURNAL OF NATURAL RESOURCES Year:2000 | Volume:53 | Issue:3 Page(s): 251-260

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Title

AN INVESTIGATION OF THE STRUCTURE OF NATURAL CASPIAN BEECH (FAGUS ORIENTALIS LIPSKY) STANDS IN GORAZBON-KHEYROUDKENAR DISTRICT

Author(s)

FALAH A. | ZOBEYRI MAHMOUD | JAZIREI M.H. | MARVI MOHAJER M.R. | Issue Writer Certificate

Keywords

STAND STRUCTUREQ2

UNEVEN-AGED STANDQ3

SCATTER DIAGRAM OF NUMBER IN DIAMETER CLASSESQ4

BETA DISTRIBUTIONQ4

WEIBULE DISTRIBUTIONQ3

EXPONENTIAL MODELQ4

POWER MODELQ4

CHI-SQUARE TESTQ4

Abstract

In order to study the structure of natural beech stands, four plots each of one hectare area were selected in Gorazbon district (Kheyroudkenar forest).Forest stand characteristics including species composition, number, basal area and volume per hectare were measured, the scatter diagram being drawn. Considering this decreasing diagram, five model functions were analyzed for the best fitting one.Theoretical models which were tested, consisted of regression, BETA DISTRIBUTION, WEIBULE DISTRIBUTION, EXPONENTIAL MODEL and POWER MODEL. Among the tested models, three (regression model, Beta and WEIBULE DISTRIBUTIONs) proved acceptable. The regression model, because of the minimum value of chi-square (x2) in the test was the best fitting and, thus suggested for planning and conducting beech stands in Kheyroudkenar forest.The SCATTER DIAGRAM OF NUMBER IN DIAMETER CLASSES and evaluated models were indicative of unevenness of age in the investigated stands.

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APA: Copy

FALAH, A., ZOBEYRI, MAHMOUD, JAZIREI, M.H., & MARVI MOHAJER, M.R.. (2000). AN INVESTIGATION OF THE STRUCTURE OF NATURAL CASPIAN BEECH (FAGUS ORIENTALIS LIPSKY) STANDS IN GORAZBON-KHEYROUDKENAR DISTRICT. IRANIAN JOURNAL OF NATURAL RESOURCES, 53(3), 251-260. SID. https://sid.ir/paper/22977/en

Vancouver: Copy

FALAH A., ZOBEYRI MAHMOUD, JAZIREI M.H., MARVI MOHAJER M.R.. AN INVESTIGATION OF THE STRUCTURE OF NATURAL CASPIAN BEECH (FAGUS ORIENTALIS LIPSKY) STANDS IN GORAZBON-KHEYROUDKENAR DISTRICT. IRANIAN JOURNAL OF NATURAL RESOURCES[Internet]. 2000;53(3):251-260. Available from: https://sid.ir/paper/22977/en

IEEE: Copy

A. FALAH, MAHMOUD ZOBEYRI, M.H. JAZIREI, and M.R. MARVI MOHAJER, “AN INVESTIGATION OF THE STRUCTURE OF NATURAL CASPIAN BEECH (FAGUS ORIENTALIS LIPSKY) STANDS IN GORAZBON-KHEYROUDKENAR DISTRICT,” IRANIAN JOURNAL OF NATURAL RESOURCES, vol. 53, no. 3, pp. 251–260, 2000, [Online]. Available: https://sid.ir/paper/22977/en

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