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Abstract

This study aimed to investigate the effective of partial harvest method used for tree biomass estimation. Such method was analyzed for the correlation in compare with invented allometric equations. The advantages and disadvantages of those methods were discussed. The significantly difference between estimation methods were analyzed. As a result, tree biomass calculated by the Brown’s allometric equation produced highest results, followed by the partial harvest method, Tsutsumi’s, Chave’s and Pothong’s equations respectively. The selected allometric equations showed the positive correlation with partial harvest method. The highest positive correlation was found between the partial harvest method and both equation of Chave and Pothong (R = 0.99, p ≤ 0.05 and R = 0.99, p ≤ 0.05, respectively), followed by Tsutsumi’s and Brown’s equations (R = 0.96, p ≤ 0.05 and 0.88, p ≤ 0.05 respectively). Wood density significantly varied among tree species and that affected the effective of biomass estimation. The allometric equations of Pothong and Chave can be applied for tree biomass estimation in secondary forest or ‘mixed-species’ plantation. The use of site-specific allometric equation should be validated with the results from a partial harvest method to avoid the possible errors of model limitation. Moreover, the partial harvest method can be used for forest monitoring in the national park or protected area to obtain the accurate and reliable results.

Article History

Received: Aug 15, 2021; Accepted: Sep 17, 2021; Published: Feb 08, 2022

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