Information on Forest Science and Technology Number 2 2003

July 19, 2006 by

Summaries of papers in the bulletin; for more information contact info@fsiv.org.vn


Research results on the establishment of a silvo-pisci model and the rehabilitation of a mangrove forest ecosystem in Thai Binh

(Ngo Dinh Que and Nguyen Duc Minh)

This paper deals with the silvo-pisci model as an ecological fish pond that provides forest protecton and at the same time allows shrimp farming on the 33 ha of extensive fish farming ponds in Thai Thuy, Thai Binh.

Two years after implementation good results have been obtained from the model for growth of mangrove forest, aquaculture and environmental improvement.


Effect of afforestation techniques on growth of intensive forest plantations in Quang Ninh province for supply of mine props

(Truong Tat Do and Nguyen Thanh Phuong)

Establishment of intensive forest plantations together with application of successful silvicultural techniques is aimed at raising forest productivity and quality as well as shortening the management rotation to improve efficiency. The research was carried out at the Quang Ninh Centre for Science Application and Forest and Agricultural Production from 1999 to 2002. Results of research on the effect of forest establishment techniques on the growth of forest plantations supplying mine props in Quang Ninh show that planting density, forest planting system and size of planting holes markedly affect forest plantation growth. For intensive forest plantations supplying mine props with Urophylla and Acacia, mixed plantations in bands with an initial density of 1330 trees/ha and planting holes 40x40x40 cm are recommended.


Research on Acacia auriculiformis propagation by tissue culture

(Luong Thi Hoan, Nguyen Thien Huong, Le Son and Doan Thi Mai)

Research on propagation of Acacia auriculiformis by tissue culture is aimed at supplying planting stock on a mass scale, an abundant supply of saplings of uniform growth and development for forest rejuvenation and to reduce the management rotation in forest planting for large timber production.


Forest types and water availability in the monsoon forests of South East Vietnam

(Truong Quang Tam, Duong Tien Dung and R Mitloener)

The monsoon forests of the mainland south east are characterized by the dominance of Dipterocarpaceae. There is often a very close coexistence between different forest types. This kind of forest mosaic was investigated in South East Vietnam. After analysis of stand structure and soil characteristics, the dominant species of the respective forest types were investigated physiologically by investigating and measuring their midday and pre-dawn plant water potentials and plant osmotic potential under field conditions. The actual water availability of the trees in the late dry season depended on the variety of forest types and their respective sites.


Proposals for the planning, organization and management of buffer zones in Vietnam

The author proposes the establishment of buffer zones in certain nature reserves and specifies their location, boundary and size. He also describes the roles and responsibilities of local authorities, management boards of the nature reserves and state forest enterprises in management of the nature reserves and buffer zones as well as a basis for formulating investment projects in the buffer zones and a project management mechanism.


Potential for ecological tourism in nature reserves in Vietnam

By 30 May 2003, 25 national parks and 115 nature reserves were present in Vietnam. Their establishment is beneficial for the conservation of genetic resources of rare and valuable plant and wildlife species that are threatened with extinction. These nature reserves and national parks also have great potential for ecological tourism, that has not yet been realised.

An evaluation of the potenial benefits and possible limitations of ecological tourism provides a good basis for developing policies, strategies and an action plan for tourism in general and ecological tourism in particular for Vietnam in the future.


Hamlet forest status for forest management in Vietnam

(Nguyen Ngoc Quang)

Hamlet forests are managed by a type of forest husbandry that is popular in mountainous areas where the ethnic minorities live. The role of this type of forest is to support the spiritual life of the communities, protect water sources and provide forest products for domestic use.

Hamlet forest management helps protect the forest and the ecological environment of the communities as well as providing some of the community and household forest product requirements. Most people participate in forest activities on a voluntary basis. Hamlet forest management does not conflict with other forms of forest activities carried out by households, state forest enterprises and farms. On the contrary, it provides mutual assistance for development, especially household forestry, in land allocation and forest protection.


Manufacture of a test soil cultivation machine for forest planting in Vietnam

(Nguyen Can)

A test tractor was designed and manufactured for studying the dynamics of track tractors operating on forest slopes.

Initial results show that the model worked well and costs of the experiment were much lower than they would have been using a real tractor.


Research on particle board properties of E. urophylla

(Nguyen Trong Nhan)

Six and eight-year-old E. urophylla was used as raw material for particleboard. Three-layered particleboards with a target board density of 0.70 and 0.75g/cm3 were produced with urea formaldehyde resin. Bending strength (MOR), internal bond (IB) and thickness swelling (TS) satified the required properties of Type 1A of 04TCN2-1999. The readings of MOR, IB and TS of three-layered particleboards of 6-year-old E. urophylla with target board density of 0.70g/cm3 were 18.89 MPa, 0.36 MPa and 16.78% respectively and with a target board density of 0.75g/cm3 were 19.82 MPa, 0.39 MPa and 17.23% respectively. The readings of MOR, IB and TS of three-layered particleboards of 8-year-old E. urophylla with target board density of 0.70g/cm3 were 20.78 MPa, 0.40 MPa and 15.45% respectively and with target board density of 0.75g/ cm3 were 21.22 MPa, 0.43 MPa and 16.65% respectively. The results indicate that 6- and 8-year-old E. urophylla may be a potential source of raw material for particleboard.


Calamus platyacanthus Warb. Ex Becc planting technique (Vietnamese version only)


Phyllostachys edulis (Carr.) Riviere planting technique (Vietnamese version only)

Bamboo and rattan genetic resources (Vietnamese version only)

Mountains in the tropics: the challenge for forests (Vietnamese version only)

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