Ấn phẩm khoa học

Sustainable Management of Acacia auriculiformis Plantations for Wood Production over Four Successive Rotations in South Vietnam

date04:52 PM - 14/09/2021
Sustainable Management of Acacia auriculiformis Plantations for Wood Production over Four Successive Rotations in South Vietnam

Vietnam’s forestry sector is facing rising demands for wood to support national and rural economies, and rural livelihoods. A feasible option to meet this demand is to improve productivity in the current plantation estates, especially in those owned by thousands of small growers. Growers have invested in short-rotation acacia plantations primarily for the woodchip market, but are being urged through government policies and pressured by certification bodies and some NGOs to shift to longer rotations, preferentially, for growing saw logs. In this context, we examined the productivity of an Acacia auriculiformis plantation in South Vietnam, over four successive rotations, spanning 25 years. We show that it is possible to increase and sustain wood production in the long term, by applying simple but integrated management practices, recognizing that the conservation of site resources is critical for sustainability. Practices which depleted site organic matter and nutrients lead to a hidden, but high, cumulative loss of production. Given the site and soil damaging practices prevalent in the country, it is likely that production foregone in those sites may be equivalent to the yield from one in every four or five rotations harvested. With sound management including the conservation of site resources, planting the best germplasm, appropriate stocking and judicious use of herbicide, total wood production and the proportion of saw logs (50–70% of the commercial wood at about 7 years of age) can be increased substantially. At the same time, these practices also can promote understory development and diversity in the stand. Such holistic benefits are possible without extending the rotation length and/or thinning, which are likely to raise the levels of risks for small growers, who are not covered by any insurance. Investments and support for small growers to enable higher productivity and value per unit area in their holdings, through sustainable management, would offer practical and low-risk options for the benefits of growers, processors and ecosystems

Kết quả nghiên cứu khoa học lâm nghiệp giai đoạn 2000 - 2016

date03:21 PM - 09/04/2021
Kết quả nghiên cứu khoa học lâm nghiệp giai đoạn 2000 - 2016

Kết quả nghiên cứu khoa học lâm nghiệp giai đoạn 2000 - 2016

Công nhận giống cây trồng lâm nghiệp Thanh thất, Chiêu liêu

date09:41 AM - 30/05/2021
Công nhận giống cây trồng lâm nghiệp  Thanh thất, Chiêu liêu

Công nhận các giống cây trồng lâm nghiệp do Viện Khoa học Lâm nghiệp Việt Nam nghiên cứu chọn tạo, gồm: 1. Giống cây Thanh thất: Xuất xứ Tuyên Quang (ký hiệu TQ); Gia đình: Tuyên Quang 6 (ký hiệu TQ6), Đồng Nai 13 (ký hiệu ĐN13), Đồng Nai ĐN11 (ký hiệu ĐN 11) và Vĩnh Phúc 6 (ký hiệu VP6). 2. Giống cây Chiêu liêu nước: Xuất xứ Tây Ninh (ký hiệu TN); Gia đình: Kiên Giang 11 (ký hiệu KG11), Đồng Nai 7 (ký hiệu ĐN7), Tây Ninh 1 (ký hiệu TN 1) và Tây Ninh 2 (ký hiệu TN 2).

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