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

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

저자정보

  • Mehrdad Mirzaei Faculty of Natural Resources, University of Guilan, Someh Sara 1144, Iran
  • Amir Eslam Bonyad Faculty of Natural Resources, University of Guilan, Someh Sara 1144, Iran
  • Mahboobeh Mohebi Bijarpas Faculty of Natural Resources, University of Guilan, Someh Sara 1144, Iran
  • Fatemeh Golmohamadi Faculty of Natural Resources, University of Guilan, Someh Sara 1144, Iran

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