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مجله منابع طبیعی ایران (منتشر نمی شود)
Article 3, Volume 54, Issue 3 - Serial Number 873, May 2001    PDF (461.26 K)
Abstract
In order to study the using of stratification inventory Inethod for voluille estilllation in Kheyroodkenar forest, the cost and precision of systematic random salllpling and stratification method were compared in Patolll and Nalllkhaneh districts. First, the forest, based on crown density, was stratified on aerial photographs and then inventoried with systematic randoln salnpling Inethod. Also the time used in aerial photographs lab for stratifying the photos and in the field for 111easuring the sample plots were recorded. After stratfication and Ineasureillent, the tilne-cost and precision of each method were calculated. The nulneral values of precision2x Time -cost (E2%xT) were used to compare these
two methods. The results showed that the stratification method in this forest, is better than systelnatic random sampling met
Keywords
Aerial photographs; Cost; precision; Stratification; Systematic random sanrlpling
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