Individual study: Effect of gap size created by thinning on seedling emergency, survival and establishment in a coastal pine forest
Zhu J., Matsuzaki T., Lee F. & Gonda Y. (2003) Effect of gap size created by thinning on seedling emergency, survival and establishment in a coastal pine forest. Forest Ecology and Management, 182, 339-354
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Thin trees within forests: effects on young trees
A controlled study in 1997-2001 in temperate coniferous forest in Japan (Zhu et al. 2003) found no effect of thinning on Japanese black pine Pinus thunbergii seedlings density. Density (seedlings/m2) was similar in all thinning treatments (unthinned: 14; 20%: 16, 30%: 13; 50%: 17). Four treatments: unthinned and 20%, 30% and 50% of the area thinned in a patch pattern were applied each to a 40 × 50 m forest section in December 1997. Japanese black pine seedlings were monitored four growing seasons after thinning in five 2 × 2 m plots in each treatment.