{"id":1012,"date":"2007-03-02T09:05:42","date_gmt":"2007-03-02T02:05:42","guid":{"rendered":"http:\/\/vafs.gov.vn\/en\/?p=1012"},"modified":"2019-09-26T10:24:30","modified_gmt":"2019-09-26T03:24:30","slug":"vietnam-journal-of-forest-science-number-1-2007-3","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2007\/03\/vietnam-journal-of-forest-science-number-1-2007-3\/","title":{"rendered":"Vietnam Journal of Forest Science Number 1-2007"},"content":{"rendered":"

1. The List of Bamboo Species in <\/strong>Vietnam<\/strong><\/p>\n

Nguyen Hoang Nghia, Tran Van Tien<\/strong><\/p>\n

Forest Science Institute of\u00a0 <\/em>Vietnam<\/em><\/p>\n

Summary<\/strong><\/p>\n

Through field surveys over four years (2003 \u2013 2006) over the whole country, a preliminary list of Bamboo species in Vietnam was established. The list includes 194 Bamboo species of 26 genera, of which 80 species were preliminarily identiflied and named while some of the remaining\u00a0 may be new species for Vietnam. Some new bamboo genera were found during the field surveys, such as the genus Maclurochloa<\/em> with 17 species; the genus Melocalamus<\/em> with 10 species and the genus Kinabaluchloa<\/em> with one species. Some new Bamboo species have been found such as a small Bamboo from Bidoup (a species of Kinabaluchloa<\/em>) with an appearance similar to\u00a0 species of the same genus in Malaysia (Wong, 1995); one Ampelocalamus <\/em>species was also found also in Bidoup andsome new Schizostachyum<\/em>, Gigantochloa<\/em> and Bambusa<\/em> species. Some Bamboo genera with high number of species are Bambusa<\/em> with 55 species, Dendrocalamus <\/em>with 21, Gigantochloa<\/em> with 16, Schizostachyum<\/em> with and Indosasa<\/em> with 11 species.<\/p>\n

Keywords:<\/strong> Bamboo, Bamboo list, field survey\u00a0<\/strong><\/p>\n

2. Dynamic structure of natural forest in Kon Ha Nung<\/strong><\/p>\n

Tran Van Con<\/strong><\/p>\n

Forest Science Institute of <\/em>Vietnam<\/em><\/p>\n

Summary<\/strong><\/p>\n

Species composition, stand structure and stand dynamics of tropical closed evergreen broad leaf rain forest in Kon Ha Nung were studied from 2004 to 2006. Tree diversity expressed as Shannon-Wiener\u2019s index (H\u2019) and importance value as the summation of relative density and relative basal area. N\/D distribution was simulated by Weibull function and had the inverse J-shape structure which indicates that the forests are well regenerated and composed of shade-tolerant tree species. High mortality following the emergence of dense seedlings, sharply declined to zero with large trees. Recruitment rates of trees with dbh>10cm were faster than the mortality rates, indicating the population growth in the stands. The results showed that there was a high correspondence in the mortality, recruitment and population changes. Based on this knowledge a dynamic system in terms of D\/N structure has been simulated.<\/p>\n

Keywords:<\/strong> Tropical closed evergreen broad leaf rain forest, dynamic, natural regeneration, recruitment, mortality, growth, structure, Kon Ha Nung.<\/p>\n

3. Diversity of resources of medicinal plants at\u00a0 the <\/strong>Ba<\/strong> Vi<\/strong> National Park<\/strong><\/p>\n

Vu Van Son<\/strong><\/p>\n

Bavi<\/em> National Park<\/em><\/p>\n

Nguyen Nghia Thin, Nguyen Thi Kim Thanh <\/strong><\/p>\n

Hanoi<\/em> National<\/em> University<\/em><\/p>\n

Summary<\/strong><\/p>\n

According to surveys, 668 species, 441 genera, 158 families of 5 divisions of the higher plants at the Bavi National Park were used for medicine. The species of the Angiospermae are dominant\u00a0 which represent 96.40% of total medicinal species investigated, then the Polypodiophyta 2.10%, the Lycopodiophyta 0.30%, the Pinophyta 1.05% and the Equisetophyta 0.15%. Ten most diverse families are Euphorbiaceae with 38 species, Asteraceae with 35, Rubiaceae with 26, Moraceae with 24, Fabaceae with 23, Apocynaceae 19, Verbenaceae and Rutaceae 17, Zingiberaceae and Myrsinaceae with 16 lo\u00b5i. Total species number of those families is 231 which represents 34.58% of all species investigated. The families with 1 species go up to 58 representing 8,68% of all species. Twenty-two genera with more species are: Ficus<\/em> with 16 species, Ardisia<\/em> 9, Cinnamomum<\/em> 7, Piper<\/em> 6, eight genera namely Schefflera<\/em>, Gynura<\/em>, Euphorbia<\/em>, Maesa<\/em>, Citrus<\/em>, Solanum<\/em>, Callicarpa <\/em>and Clerodendrum<\/em> have 5 species.<\/p>\n

Key<\/strong>words<\/strong>: Bavi National Park, traditional medicinal plant,\u00a0\u00a0<\/strong><\/p>\n

4. Regeneration of native forest tree species in forest plantations and <\/strong>denuded <\/strong>hills of Namlau commune in\u00a0 Son La Province<\/strong><\/p>\n

Tran Van Do, Nguyen Ba Van<\/strong><\/p>\n

Forest Science Institute of Vietnam<\/em>\u00a0<\/strong><\/p>\n

Summary<\/strong><\/p>\n

This study was conducted in Acacia and Eucalyptus<\/em> plantations and unplanted areas in\u00a0 Son La Province to compare the regeneration of native forest tree species in different plantations and unplanted areas, and to examine the effect of planting densities on the establishment of native forest tree species. Circular plots of 200m2<\/sup> were used to collect data on the numbers of regenerated native forest tree species and their abundance. Several\u00a0 indices were used to evaluate species diversity. A total of 22 regenerated native forest tree species appeared in the plantation of Acacia auriculiformis<\/em> and their abundance was 860 trees per ha. The highest natural regeneration was found in A.auriculiformis<\/em> plantation with a planting density of 1,660 trees per ha. The lowest abundance and diversity was in the plantation of Eucalyptus camaldulensis<\/em> with 12 regenerated native forest tree species and an abundance of 467 trees per ha.<\/p>\n

Keywords: native species <\/strong>regeneration, Acacia auriculiformis<\/em>\u00a0 ,Acacia mangium,<\/em> Eucalyptus camaldulensis, <\/em>unplanted areas.\u00a0<\/strong><\/p>\n

5. Appraisal of the <\/strong>quality of mangrove plantations as seashore protection forests of the 661 Program in Thai Binh province<\/strong><\/p>\n

Truong Tat Do, Nguyen Kim Oanh<\/strong><\/p>\n

Forest Science Institute of Vietnam<\/em><\/p>\n

Summary<\/strong><\/p>\n

Mangove forests play an important role in protecting seashore dykes, improving ecological environments and protecting aquatic products resources. Establishment of protection forest belt systems to ensure the protective function of mangrove forests is an urgently needed task to be carried out by the forestry sector of Thai Binh province. Results of the “Assessement of quality of mangrove plantations as seashore protection forests of the 661 Program in the period of 1998 – 2005 in Thai Binh province” showed\u00a0 the planting areas, survival rates, rates of establishment of\u00a0 plantations, growth of forest on different sites, and planting techniques that have been applied. These results are the basis for proposed\u00a0 technical measures to improve the quality of protection mangrove forests planted by 661 Program in the period of 2006 – 2010.<\/p>\n

Keywords:<\/strong> Seashore protection forest, mangrove forest, 661 Program, Thai Binh province.\u00a0<\/strong><\/p>\n

6. The state of forests and forest lands in Soc Son district, Ha Noi capital<\/strong><\/p>\n

Nguyen Van Thinh<\/strong>Bui Thanh Hang<\/strong><\/p>\n

Forest Science Institute of <\/em>Vietnam<\/em><\/p>\n

Summary\u00a0<\/strong><\/p>\n

Soc Son is the District of Ha Noi capital with the highest forest land areas.\u00a0 To have a basis for developing forestry projects in the period 2007-2015 in this district, Ha Noi has engaged the\u00a0 Forest Protection Department to evaluate the current status of forests and forest lands,\u00a0 for development of a forest strategy in the next few years.<\/p>\n

Keywords: <\/strong>Soc Son district, state of forest and forest land,\u00a0 forest and forest land use.\u00a0<\/strong><\/p>\n

7. Preliminary research on improvement of the specific gravity of Paulownia fortunei<\/em> wood\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/strong><\/p>\n

Bui Duy ngoc, Nguyen Dinh Hoi<\/strong>Nguyen Thi Minh Xuan\u00a0\u00a0 <\/strong><\/p>\n

Forest Science Institute of <\/em>Vietnam<\/em>\u00a0 <\/strong><\/p>\n

Summary<\/strong><\/p>\n

In Vietnam there is an\u00a0 abundant raw material resource of Paulownia fortunei<\/em> . The advantages of Paulownia fortunei<\/em> wood are that it displays little warping and deformation but it is\u00a0 not popular for\u00a0 use\u00a0 in wood processing because the wood\u00a0 is light and spongy and cannot make products that resist impacts. Research is underway on improvement of the specific gravity to help correct this serious defect. To improve\u00a0 Paulownia fortunei<\/em> wood\u00a0 specific gravity\u00a0 P \u2013 F adhesive is being tested to soak \u00a0the wood (non-pressure treatment) before complete hot compression. The experimental samples had average of specific gravity is 0,27 g\/cm3 <\/sup>before hot compression and 0,525 g\/cm3<\/sup> after hot compression which was about the average of specific gravity of other woods used in woodworking and production.<\/p>\n

Keywords :<\/strong> improvement of specific gravity, Paulownia fortunei<\/em> wood<\/p>\n

8. Research into some properties of forest products preservatives made from Cashew nut peel extract<\/strong><\/p>\n

Bui Van Ai<\/strong><\/p>\n

Forest Science Institute of <\/em>Vietnam<\/em><\/p>\n

Summary<\/strong><\/p>\n

Cashew-nut peel extract is a secondary product after processing Cashew nuts. The peel can yield 10 \u2013 15% extract. One research project has investigated this extract as a forest products preservative which can prevent attack by harmful insects. In order to improve the preservative properties of the extract it was treated with chlorine gas. In a further trial diezel oil was selected\u00a0 in order to liquify the preservative chemical products. Some properties of the\u00a0 preservative chemical product were studied. Results of this research\u00a0 can provide a\u00a0 scientific basis\u00a0 for developing new forest products preservatives\u00a0\u00a0\u00a0 made from plants..Keywords<\/strong>: forest products preservative chemical products, Cashew-nut peel extract<\/p>\n

9. Introduction to Co2Fix V 3.1 model and its application to carbon accounting and other forest values<\/strong><\/p>\n

Duong Tien Duc, Cao Chi Khiem, <\/strong>Bui Thanh Hang<\/strong><\/p>\n

Forest Science Institute of Vietnam<\/em><\/p>\n

Abstract<\/strong><\/p>\n

This paper provides an introduction to the general conceptual approach of the CO2FIX V 3.1 model, as well as its implementation and examples. This stand level simulation model is a tool which quantifies the carbon stocks and fluxes in forest biomass, soil organic matter and\u00a0 wood products chain. The model is applicable to many difference situations such as afforestation projects, agroforestry systems, and selective logging systems.<\/p>\n

This model will provide a powerful tool for Vietnamese foresters\u00a0 for carbon accounting as well as for other forest values.<\/p>\n

Keywords:<\/strong> Afforestation, agroforestry, bioenergy, biomass, carbon accounting, carbon sequestration, CDM, forest simulation model, Kyoto protocol\u00a0<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

1. The List of Bamboo Species in Vietnam Nguyen Hoang Nghia, Tran Van Tien Forest Science Institute of\u00a0 Vietnam Summary Through field surveys over four years (2003 \u2013 2006) over the whole country, a preliminary list of Bamboo species in Vietnam was established. The list includes 194 Bamboo species of 26 genera, of which 80 […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[17],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1012"}],"collection":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=1012"}],"version-history":[{"count":2,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1012\/revisions"}],"predecessor-version":[{"id":1672,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/1012\/revisions\/1672"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=1012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=1012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=1012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}