Individual study: Investigation and comparison of natural regeneration structure of forest stands in protected and non-protected areas in Arasbaran
Alijanpour A. & Mahmoudzadeh A. (2007) Investigation and comparison of natural regeneration structure of forest stands in protected and non-protected areas in Arasbaran. Pakistan journal of biological sciences: PJBS, 10, 1697-1702
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Legal protection of forests
A site comparison study in 2005 in temperate broadleaf forest in Iran (Alijanpour & Mahmoudzadeh 2007) found that forest protection increased the density of young trees. Thirty years after an area was protected, the average number of new trees was higher in protected (530/ha) than in unprotected areas (390/ha). New tree density was monitored in 77 plots (0.1 ha) in one protected and one unprotected forest sites (485 ha each).