{"id":446,"date":"2006-07-20T00:16:23","date_gmt":"2006-07-20T00:16:23","guid":{"rendered":"http:\/\/envafs.dungnq.local\/2006\/07\/20\/the-role-and-development-status-of-dipterocarpaceae-family-in-lao-pdr\/"},"modified":"2006-07-20T00:16:23","modified_gmt":"2006-07-20T00:16:23","slug":"the-role-and-development-status-of-dipterocarpaceae-family-in-lao-pdr","status":"publish","type":"post","link":"https:\/\/vafs.gov.vn\/en\/2006\/07\/the-role-and-development-status-of-dipterocarpaceae-family-in-lao-pdr\/","title":{"rendered":"The role and development status of Dipterocarpaceae Family in Lao PDR"},"content":{"rendered":"

hanhsamone<\/SPAN> Phongoudom and Khamfeua Sirivongs<\/SPAN><\/FONT><\/FONT>
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Forestry Research Centre (FRC), National Agriculture and Forestry Research Institute (NAFRI), Ministry of Agriculture and Forestry (MAF). <\/SPAN>Namsouang, Naxaithong, Vientiane Capital, Lao PDR; P.O Box: 7174, Tel\/Fax.: 856-21-770892<\/FONT><\/FONT><\/SPAN><\/I>
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E-mail: <\/FONT>chanhsamone@yahoo.com<\/FONT><\/SPAN><\/A>, <\/FONT>chansamone.p@nafri.org.la<\/FONT><\/SPAN><\/A>, <\/FONT>khamfeua.s@nafir.org.la<\/FONT><\/SPAN><\/A>, <\/FONT>feua1307@yahoo.com<\/FONT><\/SPAN><\/A><\/SPAN><\/I>
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<\/FONT><\/SPAN><\/B>
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Abstract<\/FONT><\/FONT><\/SPAN><\/B>
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This paper discusses the roles and status of Dipterocarpaceae family in the country, focusing on the socio-economic contributions in terms of timber, sawn woods, plywood production, non-timber forest products and other uses of species in the family. <\/SPAN>The paper also reviews the status of the dipterocarp forests in terms of forest areas, distribution, occurrences, status of conservation, as well as the domestication, nursery practice, taxonomy, and seed sources of species in the family of Dipterocarpaceae in Lao PDR. <\/SPAN><\/SPAN><\/SPAN><\/FONT><\/FONT>
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Keywords: <\/SPAN><\/B>Dipterocarpaceae, Lao PDR<\/SPAN><\/FONT><\/FONT>
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Introduction<\/FONT><\/FONT><\/SPAN><\/B>
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Lao PDR is a country that is rich in natural dipterocarp forest with a total forest area of 11.2 million ha (Manivong and Sanderwall 1992). However, the number of flora species was estimates to be about 8,000 to 11,000 species (<\/SPAN>Xu Zai Fu 1994). The Dipterocarpaceae family in Laos has 6 genera (Anisoptera, Dipterocarpus, Hopea, Parashorea, Shorea, Vatica<\/I>) and 27 species, and most of the Dipterocarps species are found in the Dry Dipterocarps Forest (DDF), Mixed Deciduous Forest (MDF) and Dry Evergreen Forest (DEF). Dipterocarps species play an important role in the socio-economic status accounts for 50 to 70% of the timber and non-timber forest products (Vidal 1963, Xaidala and Lamxay 2000). The potential for natural regeneration, and the use of the dipterocarps, Anisoptera cotatus, Dipterocarpus alatus<\/I> and Hopea odorata<\/I>, as plantation species was studied by FRC (1999) and Xiong and Gilmour (2000), and Thepphavong et al. <\/I>(2002).<\/SPAN><\/FONT><\/FONT>
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Status of research and development of Dipterocarpaceae<\/FONT><\/FONT><\/SPAN><\/B>
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Research on taxonomy and ecology<\/FONT><\/FONT><\/SPAN><\/I>
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Guerin (1910), who is the first person interested in Dipterocarpaceae family, in the region and specifically in Laos, followed by Tardieu-Blot (1941<\/SPAN>—<\/SPAN>43), Paquet et al.<\/I> (1971), Simitinand et al.<\/I> (1980, 1990), Svengsuksa and Vidal (1997), and Hoang Van Sam et al.<\/I> (2004). All the 6 genera and 27 species, and the details of each species are provided in Appendix 1. However, the initial checklist of tree species in Laos has been completed (Callaghan 2003).<\/SPAN><\/FONT><\/FONT>
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Table 1.<\/SPAN><\/B> Distribution of Dipterocarps species in forest types<\/SPAN><\/FONT><\/FONT>
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Forest<\/SPAN> types <\/SPAN>Areas <\/SPAN>(million ha) <\/SPAN>Percent of occurrences<\/SPAN><\/FONT><\/FONT><\/DIV>
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Dry<\/SPAN> Dipterocarp Forest<\/SPAN> <\/SPAN>1 206.5 <\/SPAN>60 (12<\/SPAN>—<\/SPAN>19 species)<\/SPAN><\/FONT><\/FONT>
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Mixed Deciduous Forest <\/SPAN>8 334.9 <\/SPAN>30 (6<\/SPAN>—<\/SPAN>8 species)<\/SPAN><\/FONT><\/FONT>
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Dry<\/SPAN> Evergreen Forest<\/SPAN> <\/SPAN> <\/SPAN>1 146.5 <\/SPAN>10 (2<\/SPAN>—<\/SPAN>3 species)<\/SPAN><\/FONT><\/FONT><\/DIV>
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<\/FONT><\/SPAN>
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Seed sources development and management<\/SPAN><\/I><\/SPAN><\/I><\/FONT><\/FONT>
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The development of seed sources was conducted during 2003<\/SPAN>—<\/SPAN>2004 and registered by Ministry of Agriculture and Forestry. A total of <\/SPAN>4 genera, 22 seed sources and 7 species over the occurrence areas are recognised and described in Appendix 2. The national strategy of seed demand and supply has classified some Dipterocarps species as in the third category after Tectona grandis<\/I> and Aquilaria crassana (<\/I>Lamxay 2000, Greijmans et al.<\/I> 2004).<\/SPAN><\/SPAN><\/FONT><\/FONT>
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<\/FONT><\/SPAN>
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Phenology study<\/FONT><\/FONT><\/SPAN><\/I>
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The phenology study was conducted from 2001<\/SPAN>—<\/SPAN>2005 and the results are summarized in Table 2.<\/SPAN><\/FONT><\/FONT>
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<\/FONT><\/SPAN>
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Table 2.<\/SPAN><\/B> <\/SPAN>Summary of phenology study of Dipterocarps species<\/SPAN><\/FONT><\/FONT>
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_______________________________________________________________________<\/FONT><\/FONT><\/SPAN>
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Species <\/SPAN>Flowering <\/SPAN>Fruiting <\/SPAN><\/FONT><\/FONT><\/SPAN><\/B><\/DIV>
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Anisoptera costata <\/SPAN><\/SPAN><\/I>November-Mach <\/SPAN>February-May <\/SPAN><\/I><\/SPAN><\/FONT><\/FONT>
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Dipterocarpus alatus <\/SPAN><\/SPAN><\/I>November-January <\/SPAN>April-May<\/SPAN><\/FONT><\/FONT>
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D. retusus<\/SPAN><\/I> <\/SPAN>December-February <\/SPAN>April-July <\/SPAN><\/SPAN><\/FONT><\/FONT>
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Hopea chinensis <\/SPAN><\/SPAN><\/I>June-October <\/SPAN>February-April<\/SPAN><\/FONT><\/FONT>
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H. odorata<\/SPAN><\/I> <\/SPAN>February – March <\/SPAN>April-July <\/SPAN><\/SPAN><\/FONT><\/FONT>
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Parashorea stellata <\/SPAN><\/SPAN><\/I>April-June <\/SPAN>August-October<\/SPAN><\/FONT><\/FONT>
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Shorea siamensis<\/SPAN><\/I> <\/SPAN>February-April <\/SPAN>April-May<\/SPAN><\/FONT><\/FONT>
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Vatica odorata <\/SPAN><\/SPAN><\/I>April-June <\/SPAN>August-October<\/SPAN><\/FONT><\/FONT>
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______________________________________________________________________<\/FONT><\/FONT><\/SPAN>
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Domestication and plantation establishment<\/FONT><\/FONT><\/SPAN><\/I>
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The domestication and plantation establishment using Dipterocarps species in Laos were trialed with Dipterocarpus alatus<\/I>, Anisptera costata<\/I> and Hopea ferrea.<\/I><\/FONT><\/FONT><\/SPAN><\/p>\n","protected":false},"excerpt":{"rendered":"

Abstract<\/p>\n

This paper discusses the roles and status of Dipterocarpaceae family in the country, focusing on the socio-economic contributions in terms of timber, sawn woods, plywood production, non-timber forest products and other uses of species in the family. The paper also reviews the status of the dipterocarp forests in terms of forest areas, distribution, occurrences, status of conservation, as well as the domestication, nursery practice, taxonomy, and seed sources of species in the family of Dipterocarpaceae in Lao PDR. <\/p>\n

Keywords: Dipterocarpaceae, Lao PDR<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[9],"tags":[],"_links":{"self":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/446"}],"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"}],"replies":[{"embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/comments?post=446"}],"version-history":[{"count":0,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/posts\/446\/revisions"}],"wp:attachment":[{"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/media?parent=446"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/categories?post=446"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vafs.gov.vn\/en\/wp-json\/wp\/v2\/tags?post=446"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}