Open Access Research Paper Views (260) Download (17) Evaluation of systematic random sampling method for quantitative estimation of rare and thick trees in Caspian Forests. (Case study: Kheyroud-Kenar, Naushahr, Iran) Sohrab Moradi J. Bio. Env. Sci.6( 2), 289-296, February 2015. Key: Full callipering methodGorazbonRare and thick treesSystematic random sampling (SRS) Details