Acacia canopy structure and carbon stock in Ba Vi, Vietnam

Bui Manh Hung, Nguyen Thi Bich Phuong, Nguyen Van Quy, Nguyen Van Hop, Le Van Cuong and Yusif Habib
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Bui Manh Hung: Department of Forest Inventory and Planning, Faculty of Forestry, Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, Vietnam
Nguyen Thi Bich Phuong: Department of Soil Science, Faculty of Forestry, Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, Vietnam
Nguyen Van Quy: Faculty of Natural Resources Management, Vietnam National University of Forestry - Second Campus, Dong Nai, Vietnam
Nguyen Van Hop: Faculty of Natural Resources Management, Vietnam National University of Forestry - Second Campus, Dong Nai, Vietnam
Le Van Cuong: Faculty of Forestry, Vietnam National University of Forestry - Second Campus, Dong Nai, Vietnam
Yusif Habib: Department of Agriculture and Environment Operational Research, AgroEco Farm Solutions Ltd., Accra, Ghana

Journal of Forest Science, 2023, vol. 69, issue 1, 21-32

Abstract: Forest structure is a key component of its management and assessment in every forest ecosystem. In the study, 23 plots were established to obtain data on the acacia forest community based on tree size. Results from the study indicated that the acacia community could be broadly divided into two groups based on tree-size variables. The diameter and height frequency distributions of Group 1 were right-skewed, while those of Group 2 were more complicated. In both groups, there were positive correlations between tree-size variables, nonetheless the relationship between diameter at breast height and total height was best described using the cubic equation. Further, the Weibull and Sinh-Arcsinh (SHASH) best simulated the diameter and height frequency distribution. High-quality trees were found in a large diameter (> 30 cm) and height groups (> 22 m). In contrast, low-quality plants often concentrated on the smallest sizes. Therefore, trees with a diameter of 2-10 cm and a height lower than 8 m should receive attention to tend. Carbon stock in the two groups was 61.48 Mg.ha-1 and 64.21 Mg.ha-1, respectively. Tending solutions and measurements should be carried out regularly to promptly propose silvicultural measures and improve forest quality in future.

Keywords: Acacia mangium; distribution modelling; regression; tree quality (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnljfs:v:69:y:2023:i:1:id:46-2022-jfs

DOI: 10.17221/46/2022-JFS

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