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Composition and structure of mountain forests containing two tropical pines, Pinus krempfii and Pinus dalatensis, on the Da Lat Plateau, southern Vietnam

Published online by Cambridge University Press:  28 May 2021

Masatoshi Hara ,
Trường Thanh Hoàng ,
Trần Văn Tiến  and
Masahiko Ohsawa
Masatoshi Hara*
Affiliation:
Natural History Museum and Institute, Aoba-cho, Chiba, 260-8682, Japan
Trường Thanh Hoàng
Affiliation:
Forest Science Institute of Central Highlands and South of Central Vietnam, 09 Hung Vuong Street, Dist. Da Lat, Lam Dong, Vietnam
Trần Văn Tiến
Affiliation:
Faculty of Biology, Dalat University, 01 Phu Dong Thien Vuong, Dist. Da Lat, Lam Dong, Vietnam
Masahiko Ohsawa
Affiliation:
Institute of Ecology and Geobotany, Yunnan University, Kunming650091, China
*
Author for correspondence:*Masatoshi Hara, Email: musefield@gmail.com
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Abstract

We examined the floristic composition and stand structure of tropical mountain forests containing two pine species, Pinus krempfii Lecomte and Pinus dalatensis Ferré, on the Da Lat Plateau in southern Vietnam. A total of 92 tree species were identified, and the greatest species richness at the family level was found in Lauraceae and Fagaceae. Both pine species grew to more than 25 m in height and spread their crowns over the continuous canopy layer. Under crowns of P. krempfii, Castanopsis chinensis, Trigonobalanus verticillata, Engelhardia roxburghiana, and Dendropanax hainanensis constituted the continuous canopy layer. Under crowns of P. dalatensis, pioneer species such as Schima wallichii, Exbucklandia populnea, and Pentaphylax euryoides along with gymnosperms such as Dacrycarpus imbricatus and Dacrydium elatum constituted the continuous canopy layer. Juveniles of P. krempfii were prevalent on the forest floor, but juveniles of P. dalatensis were scarce. We suggest that two pine species have different regeneration requirements related to disturbance and soil condition.

Keywords

Conservation in sitedisturbanceendangered speciesFagaceaejuvenilesPentaphylaxpine foreststree formTrigonobalanus
Type
Research Article
Information
Journal of Tropical Ecology , Volume 37 , Issue 2 , March 2021 , pp. 51 - 63
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Copyright
© The Author(s), 2021. Published by Cambridge University Press

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