Restoration of Schima wallichii Choisy and Schima superba Gardn. Et Champ forests using assisted natural regeneration and direct sowing
Keywords:
Assisted natural regeneration, direct sowing, Schima wallichii ChoisyAbstract
Two experiments to restore forest of Schima wallichii were conducted
using dirrect sowing and assisted natural regeneration in Chieng Bom
Commune, Thuan Chau District, Son La province in Vietnam during
2013-2016. In direct sowing area, four years after sowing the seeds, there
was 68% of sowing holes has seedlings, giving 1,720 seedlings ha -1. The
annual increments of growth parameters were 0.54cm year -1, 0.42m year
-1 and 0.34m year -1 for basal diameter, total height and diameter of seedling
crown, respectively. The assisted natural regeneration experiment was
conducted in different abandon farm land on the hill for 3, 5 and 9 years.
Four years after treatment, with densities of natural regeneration seedlings
with 1266, 1150 and 860 seedlings ha -1 for 3, 5 and 9 years of abandon
farm land, respectively. The stem diameters of seedlings were 3.41cm,
5.54cm and 9.28cm, total heights were 2.96m, 3.89m and 6.07m and
diameter of seedling crowns were 2.00m, 2.58m and 2.96m for 3, 5 and 9
years of abandon farm land, respectively
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