Pieter A. Zuidema1,4,*, Eelke Jongejans2, Pham D. Chien1,3,4, Heinjo J. During1 and Feike Schieving1 1. Matrix models are popular tools for plant demographic studies, but their application tolong-lived, slow-growing species is hampered by the fact that (i) model output is highly sensitive tocategory width and (ii) growth variation between individuals can only be partially accounted for. IntegralProjection Models (IPMs) – an extension of matrix models – offer a solution to these … [Read more...]

RENFODA - JICA project L.H. Ang Forest Research Institute Malaysia Fax No: 603-62804614, E-mail: anglh@frim.gov.my Abstract Ex-mining lands on Peninsular Malaysia are mainly alienated from natural lowland dipterocarps forests before the 1900s. About 113 750 ha of such degraded land resulted from the mining industries of 1930s. Large tracts of idle ex-mining land formed the landscape of many major west-coast towns of the peninsula. To-date, despite various uses for idle ex-mining lands … [Read more...]

RENFODA - JICA project Duong Tien Duc, Joosang Chung Department of Forest Resources, College of Agriculture and Life Sciences, SeoulNationalUniversity ABSTRACT In this study, investigated were the changes in land use patterns of the Northern area of the Da River basin, Vietnam, over the period of 1993 through 1999 using remote sensing techniques. LANDSAT5 and LANDSAT7 satellite images were used as a set of source data to assess the changes in land use patterns with ERDASIMAGINE 8.6. … [Read more...]

Seed Orchard of native tree species established in 2005     Training of cutting and grafting techniques at Tan Lac Station     VA mycorrhizae Glomussp. (a symbiotic microorganism for trees) isolated from plantation in Hoa Binh                   Phosphate dissolving (arrow) by a kind of micro- organism belonging to Actinomycetes (Streptacidiphilus … [Read more...]

Nguyen Hoang Nghia Forest Science Institute of Vietnam, Dong Ngac, Tu Liem, Hanoi, Vietnam  The paper presented at the Breeding and Genetic Resources of Five-Needle Pines Conference. KFRI-IUFRO, Yangyang, Korea, 22-26 September 2008. Abstract Among more than 50 conifer species found in Vietnam, the country has 33 native species which belong to 19 genera of six families. There are seven endemic species which include two species from Cupressaceae (Cupressus torulosa and … [Read more...]

Given that changes in population size are low, information on future prospects of long-lived tree species is necessarily obtained from demographic models. We stud-ied six threatened tree species in four Vietnamese protected areas: the broad-leaved Annamocarya sinensis, Manglietia fordiana and Parashorea chinensis, and the coniferous Calocedrus macrolepis, Dacrydium elatum and Pinus kwangtunggensis. With data from a 2-year field study on recruitment, growth and survial, we construted matrix … [Read more...]

L. V. Averyanov, Phan Ke Loc, Nguyen Tien Hiep, D. K. Harder  The northeastern and southwesterm frontiers of Vietnam are formed  by the waters of the Bac Bo (Tonkin) and Thailand (Siam) Gulfs of the South China Sea. The coastline of mainland Vietnam extends nearly 3440 km. A large number of islands, mainly of continental origin and also numerous small coral atolls are included in the territory of Vietnam. The Annamite mountain chains, mainly the Den Dinh, Sam Sao, Hua Phan and … [Read more...]

Conservation prospects for threatened Vietnamese tree species results from a demographic study Pham Duc Chien, Pieter A.Zidema, Nguyen Hoang Nghia Given that changes in population size are slow, information on future prospects of long-lived tree species is necessarily obtained from demographic models. We studied six threatened tree species in four Vietnamese protected areas: the broad-leaved Annamocarya sinensis, Manglietia fordiana and Parashorea chinensis, and the coniferous … [Read more...]

Nguyen Tran Nguyen, Kazuo Nakabayashi*, Pravat K. Mohapatra, Ju1ian Thompson* and Kounosuke Fujita ' Faculty ofapphed Biological Science, Hiroshima Umversity Higashi-himshima, 739-8528 Japan; and department of Geography, University College London, 26 Bedford Way, London XCIHOAP UK Received June 7, 2002; accepted in revised form October 29, 2002 Genetic variation in response to N-deficiency between tropicsal woody plants was assessed by growing two species each of the genus Melaleuca (M. … [Read more...]