Promoting reforestation through supplementing native forest tree species in northwestern Vietnam
Journal Title: Asian Journal of Agriculture and Biology - Year 2018, Vol 6, Issue 3
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.
Authors and Affiliations
Tran Van Do
Keywords
Related Articles
- EP ID EP602739
- DOI -
- Views 92
- Downloads 0
Uptake, Translocation of Pb and Chlorophyll Contents of Oryza Sativa as Influenced by Soil-Applied Amendments under Normal and Salt-Affected Pb-Spiked Soil Conditions
Heavy metal contamination of the soil environment has become a major source of concern and has posed serious human health related problems in many developing countries particularly Pakistan. Chemical immobilization of he...
The effect of organic fertilizer and urea fertilizer on growth, yield and quality of sweet corn and soil health
This study aims to determine the effect of organic fertilizer and urea fertilizer on growth, yield, and quality of sweet corn (Zea mays L. saccharata) and soil health. The research was conducted in Bandar Lampung, Indone...
A review: risk assessment of pesticides on honey bee and pollination of agriculture crops in Pakistan
This paper reviews the importance of honey bee as pollinator of agriculture crops, fruit, vegetables, seeds etc. and losses in agriculture, honey bee and honey production due to use of chemical pesticides. Honey bee (Hym...
Rohi Sarsoon: A new high yielding rapeseed variety released for general cultivation in south Punjab (Pakistan)
This paper reports the release of new variety “Rohi Sarsoon” which is high yielding with erect growth habits. This variety was released in the year 2016 for arid and irrigated areas of agricultural lands. Rohi Sarsoon ha...
Effect of insecticides on Coccinella septempunctata (Coleoptera; Coccinellidae); A review
Coccinella septempunctata is the generalist, representative predator that is potentially used as biological control agent in many crop pest management programs. A comprehensive and critical review of published and former...