EXATIDÃO DE MÉTODOS PARA ESTIMATIVA DO VOLUME DE ÁRVORES EM PÉ EM SISTEMA DE INTEGRAÇÃO LAVOURA-PECUÁRIA-FLORESTA
Main Article Content
Abstract
The aim of this study was to verify the accuracy of methods for estimating the total volume of standing trees in crop-livestock-forest production systems. The study was carried out in crop-livestock-forest production system, cultivated with Eucalyptus grandis × Eucalyptus urophylla (clone H13), at EMBRAPA Agrossilvipastoril, in Sinop, Mato Grosso, Brazil. Twenty trees were selected, in which the total individual volume was estimated by the methods of Pressler, Hossfeld, form factor and cubed with Criterion RD 1000® dendrometer and the actual total volume with the tree felled, the latter two by the Smalian method. The methods were compared by T-test, with 95% probability, residue analysis and accuracy. The results indicated that the Pressler and Hossfeld methods provide estimates tending to overestimate and underestimate, respectively, the total volume of trees. The total volume estimated using Criterion RD 1000® is more accurate among the methods tested for estimating the volume of standing trees. However, the high cost of this device may make its use impractical. The estimation of the total volume using form factor allowed to quantify the wood stock with accuracy, being feasible.
Article Details
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).