Silvicultural Characteristics Of Dipterocarpus Rensus In Thai Nguyen Province, Vietnam
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Abstract
Dipterocarpus rensus, a long-exploited species in Thai Nguyen Province, Vietnam, is currently documented with only 244 individuals observed across scattered locations within strictly protected natural forests. This study aimed to elucidate the distribution and silvicultural characteristics of D. rensus in Thai Nguyen, providing essential insights for the conservation and sustainable development of its genetic resources. Our findings underscore a sparse population of D. rensus in Thai Nguyen, primarily concentrated within National Parks and Conservation Areas. The species composition formula for the natural distribution of D. rensus encompasses diverse tree species, including Broussonetia papyrifera, Allospondias lakonensis Pierre, Choerospondias axillaris, Fagus sylvatica, Machilus velutina Champ, Canarium album, Engelhardtia chrysolepis, Peltophorum dasyrhachis, Alangium chinense, Vatica odorata, Duabanga grandiflora, Sargentodoxa cuneata, Amesiodendron chinense, and Nephelium chryseum. The regenerative seedling composition is dominated by pioneer, fast-growing species such as Broussonetia papyrifera, Allospondias lakonensis Pierre, Fagus sylvatica, Machilus velutina Champ, Zenia insignis, Engelhardtia chrysolepis, Archidendron clypearia, Pterospermum acerifolium Willd, Bischofia javanica, Vatica odorata, Duabanga grandiflora, Sargentodoxa cuneata, Broussonetia papyrifera, Aesculus assamica, and Amesiodendron chinense. The study highlights the poor regeneration ability of D. rensus, emphasizing the necessity for research on cultivation techniques to effectively conserve and harness the genetic resources of this valuable species.
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