Abstract
Forest enrichment and/or supplement planting is a silvicultural technique to improve
number of valuable trees in natural poor forests. In this study, two native species
including Canarium album (Lour.) Raeusch and Cinnamomum obtusifolium (Roxb.)
Nees were planted in fallow stands by two experiments as planting in clear band of 6 m
wide (band planting) and in canopy gaps of >200 m2 (cluster planting). The results
indicated that planted trees of both species in both planting experiments had high
survival rates (>89%) after planting three years, and more than 75% survival trees had
good quality as straight boles without diseases. The difference of stump diameter and
stem height between experiments and species was statistically significant. C.
obtusifolium in band planting had biggest stump diameter (2.86 cm), while C. album in
band planting had tallest stem height (2.69 m) after planting three years. C. obtusifolium
had significantly larger crown diameter in band planting (1.09 m) than that in cluster
planting (0.92 m). While it was conversely found in C. album as significantly larger
crown diameter was found in cluster planting (1.12 m) compared to smaller one in band
planting (0.96 m). It is concluded that silvicultural techniques are required to promote
growth of planted trees after planting three years, especially for C. album as it requires
more sunlight at this age. The techniques must focus on opening forest canopy for
sunlight reaching crown of planted trees and on removing bad-growth trees surrounding
planted trees to minimize competitions.
Thinh Trieu, Van Thang, Phung Dinh , Cao Van Lang, Tran Van Do. (2018) Promoting reforestation through supplementing native forest tree species in northwestern Vietnam, Asian Journal of Agriculture and Biology, Volume 6, Issue 3.
-
Views
943 -
Downloads
76
Article Details
Volume
Issue
Type
Language
