Structural characteristics of plantation forest: plantationraised bed forest and plantation non-raised bed forest in U Minh Ha National Park, Ca Mau province

Abstract

This study is to determine the structure of Melaleuca forests planted in U Minh Ha National Park, Ca Mau province. Data were collected from 65 measuring plots of 100 m² (10 m x 10 m) for two types of Melaleuca plantations: raised bed forest and non-raised bed forest in U Minh Ha National Park. The results showed that for raised bed forest the average diameter was 10.4 ± 0.2 cm; The average height was 10.7 ± 0.1 m with an average mass was 213.93 m³/ha. For the non-raised bed forest, the average diameter was 8.2 ± 0.1 cm; The average height was 7.7 ± 0.1 m with an average mass was 100.03 m³/ha. The percentage distribution of trees by diameter class (N%/D1.3) of planted forests in the study area can be simulated by Weibull theoretical distribution. The simulation equation for the relationship Hvn/D1,3 of the raised bed forest and the non-raised bed forest was Hvn = 1/(0.0639 + 0.2727/D1.3) and Hvn = 1/(0.0822 + 0.4345/D1.3), respectively.