Stand Dynamics of Dipterocarp Trees in Cambodia's Evergreen Forest and Management Implications : A Case Study in Sandan District, Kampong Thom

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概要

• 論文の詳細を見る

• The purpose of this study was to explore the stand dynamics of dipterocarp species in evergreen forest as a basis for devising suitable management systems for Cambodia's forests. The data for this study were obtained from a two-year UNDP-funded forest inventory project in Sandan district of Kampong Thom province. A sample of 18 clusters located in evergreen forest were analyzed. Based on the average stand volume per hectare, this evergreen forest was further divided into poor (less than 200m^3), medium (200-300m^3) and rich (greater than 300m^3) forests. Dipterocarps contributed 50m^3 (36%), 109m^3 (43%) and 163m^3 (53%) in poor, medium and rich forests, respectively. The dominant dipterocarps species were CHBG (Dipterocarpus turbinatus), CRMS (Vatica astrotricha) and PHDK (Anisoptera glabra). To estimate the forest potential and allowable cut of dipterocarps stands, trees of DBH greater than 45cm were analyzed. Cambodia's silvicultural treatment prescribes that only 30% of stands are extracted on a selective felling cycle of 25-30 years. On the basis of this silvicultural treatment and management experience in Southeast Asia, the harvest potential of Cambodia's forest was estimated to vary from 20m^3/ha (6 trees) to 54m^3/ha (13 trees) ; approximately 65% of which was dipterocarps. These figures are more than double the current harvest rate of 10m^3/ha. However, applying such a new management system might cause forest degradation if there is no long-term political commitment to management and research from the government and parties involved. Permanent and regular research on stand dynamics and other influential factors are required to ensure the sustainability of forest resources. Forest management can no longer be concerned solely with timber production ; thus, harvesting and research in non-timber forest products should also be included in the management plan.

• 森林計画学会の論文

著者

• Ueki Tatsuhito

  Faculty Of Agricultural Science Shinshu University

• Uozumi Y

  Faculty Of Agricultural Science Shinshu University

• Uozumi Yuji

  Faculty Of Agricultural Science Shinshu University

• Phat Nophea

  Doctoral Program In Agricultural Science United Graduate School Of Agricultural Science Gifu Univers

• Ouk Syphan

  Department of Forestry and Wildlife

• Ouk S

  カンボジア林業・野生動物部

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