Easy and Quick Survey Method to Estimate Quantitative Characteristics in the Thin Forests

Abstract Acquiring accurate quantitative and qualitative information is necessary for the technical and scientific management of forest stands. In this study, stratification and systematic random sampling methods were used to estimation of quantitative characteristics in study area. The estimator (((E%) 2 xT)) was used to compare the systematic random and stratified sampling methods. 100 percent inventory was carried out in an area of 400 hectares; characteristics as: tree density, crown cover (canopy), and basal area were measured. Tree density of stands was compared through systemic random and stratified sampling methods. Findings of the study reveal that stratified sampling method gives a better representation of estimates than systematic random sampling.Key Words: inventory, systematic random, stratification, zagros forests Received: October 18, 2014. Revised: December 13, 2014. Accepte d: December 16, 2014.Corresponding author: Mehrdad MirzaeiFaculty of Natural Resources, University of Guilan, Someh Sara 1144, IranTel: (98)9187429259, 1344323600, Fax: (98)9187429259, 134432360 0, E-mail: mehrdadmirzaei28@gmail.com