A5061347483- Ecology and Vegetation Dynamics Studies
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Bamboo properties and applications
- Soil Carbon and Nitrogen Dynamics
- Soil erosion and sediment transport
- Wood Treatment and Properties
- Robotic Path Planning Algorithms
- Robotics and Automated Systems
- Advanced Algorithms and Applications
- Tree Root and Stability Studies
- Agriculture and Rural Development Research
- Plant-Derived Bioactive Compounds
- Forest Ecology and Biodiversity Studies
- Natural Fiber Reinforced Composites
- Conservation, Biodiversity, and Resource Management
- Fire effects on ecosystems
- Forest Management and Policy
- Seedling growth and survival studies
- Plant Diversity and Evolution
Vietnamese Academy of Forest Sciences
2014-2023
Forest Industry Research Institute
2014-2023
Oregon State University
2022
Thai Nguyen University of Agriculture and Forestry
2022
University of Tasmania
2014-2016
Tasmanian Institute of Agriculture
2014
Acacia hybrid (A. mangium × A. auriculiformis) is the main species planted for short-rotation forestry in Vietnam. In this study, effect of these plantations on some key properties degraded gravelly soils Central Vietnam was assessed. Soil samples were collected from second- or third-rotation representative five age classes (0.5–5 years old), and adjacent abandoned lands as controls. Compared with land, stock total soil carbon (C) significantly higher at ages 0.5, 1.5, 2.5 5 (18.4–19.5 v....
Radial and between-clone variations in stress-wave velocity, air-dry density (AD), mechanical properties six clones of 5-year-old Acacia auriculiformis trees planted Vietnam were investigated. The potential to predict modulus elasticity (MOE) rupture (MOR) using velocity standing (SWVT) or small specimens (SWVS) was also examined. examined SWVT, SWVS, wood differed significantly among clones, particularly with two (clones 1 6) well suited for A. tree breeding programs focusing on lumber...
Forest ecosystem functioning is strongly influenced by the absorption of photosynthetically active radiation (APAR), and therefore, accurate predictions APAR are critical for many process-based forest growth models. The Lambert-Beer law can be applied to estimate simple homogeneous canopies composed one layer, species, no canopy gaps. However, vertical horizontal structure rarely homogeneous. Detailed tree-level models account this heterogeneity but these often have high input computational...
Harvest residues can play a crucial role in conserving nutrients for recycling forests, but little is known about the rates of decomposition and nutrient release from these following logging tropical acacia plantations. In this study, we examined biomass content harvest residue components (bark, leaves, branches) using litterbag technique 1.5-year-period seven-year-old Acacia mangium plantation Northern Vietnam. At harvest, total dry was 18 t ha−1 comprising bark (8.9 ha−1), branches (6.6...
Forest plantation growers in Vietnam commonly burn residues after harvesting and often apply suboptimal amounts of nutrients during establishment. We examined whether the retention forest residue, application phosphorus fertiliser at higher rates, can increase rates growth. A factorial combination residue management (burning vs retention) planting (15 100 kg ha−1) treatments were applied a steeply sloping site northern Vietnam. Two adjacent experiments established, one with Acacia mangium...
Background: Young saplings of Hopea odorata, a native dipterocarp in Vietnam, require shading to prevent photoinhibition but they must avoid competition that stagnates their growth.Aims: To develop silvicultural regime by examining how the biomass production H. odorata changes along light gradient gaps within Acacia hybrid plantations.Methods: were planted 22-m-diameter circular 3-year-old plantation and 5-m 7.5-m-wide strip 2.5-year-old plantation.Results: In gap, growth increased nearly...
Acacia plantations are a significant forestry resource in Viet Nam, with the majority of area under smallholder ownership, typically 1–5 ha per household. Currently most acacias grown short rotations and sold for export as woodchips. Short rotation suit farmers they can receive return relatively quickly (within 4–5 years). However country has high reliance on imports sawlogs, some which could be substituted by growing to sawlog size longer (5–10 year) rotations. Thus Vietnamese government...
Background: Mixtures of tropical acacia nurse crops and understorey native species have been established to aid forest restoration in Vietnam, but with partial success. Knowledge physiological mechanisms underlying competitive interactions remains limited.Aims: To examine growth responses Hopea odorata, a shade-tolerant dipterocarp, within an Acacia hybrid (Acacia mangium × auriculiformis) nurse-crop plantation.Methods: H. odorata seedlings were planted three 22-m diameter gaps 3-year-old...
There is a growing interest in improving wood properties through the appropriate selection of seed provenances within species. In this study, density and mechanical were investigated for Acacia mangium trees from six different provenances, planted Quang Tri, Vietnam. Radial among provenance variation stress wave velocity (SWV), (WD), dynamic modulus elasticity (MOEd), rupture (MOR), (MOE) determined on total 480 small clear specimens (20 × 20 300 mm) cut 30 (five per provenance). SWV...
Forest ecosystem functioning is strongly influenced by the absorption of photosynthetically active radiation (APAR), and therefore, accurate predictions APAR are critical for many process-based forest growth models. The Lambert-Beer law can be applied to estimate simple homogeneous canopies composed one layer, species, no canopy gaps. However, vertical horizontal structure rarely homogeneous. Detailed tree-level models account this heterogeneity but these often have high input computational...
Burning harvest residues during site preparation can compromise the soil-nutrient stock in short-rotation plantations, but this practice remains common northern Vietnam. This study compared effect of two contrasting harvest-residue treatments (burning vs retention) on soil total carbon (TC), nitrogen (TN), extractable P (ext-P), exchangeable K (exch-K) and bulk density (BD) adjacent randomised complete-block trials, one Eucalyptus hybrid (Eucalyptus urophylla × E. pellita) other Acacia...