Mehrdad Mirzaei, Amir Eslam Bonyad, Mahboobeh Mohebi Bijarpas, Fatemeh Golmohamadi
언어
영어(ENG)
URL
https://www.earticle.net/Article/A248701
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4,000원
원문정보
초록
영어
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%)2xT)) 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.
목차
Abstract Introduction Materials and Methods Study area Full-calipering inventory (100% inventory) method Systematic random sampling method Stratification sampling method Time studies Results Discussion References