Evaluation of forest inventory processes in a forest under concession in the southwestern Brazilian Amazon
| Autor: | Felipe KAUAI, Ana Paula Dalla CORTE, Vinicius CYSNEIROS, Allan Libanio PELISSARI, Carlos Roberto SANQUETTA |
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| Jazyk: | English<br />Spanish; Castilian<br />Portuguese |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Acta Amazonica, Vol 49, Iss 2, Pp 91-96 (2019) |
| Druh dokumentu: | article |
| ISSN: | 0044-5967 1809-4392 |
| DOI: | 10.1590/1809-4392201801331 |
| Popis: | ABSTRACT Forest inventory procedures are of utmost importance to studies of wood volume stocks, and forest structure and diversity, which provide relevant information to public policies, management plans and ecological research. The present work focused on the performance of inventory techniques in the Amazon region to evaluate wood volume stocks with higher levels of accuracy while maintaining sampling intensity fixed. Two sampling processes were assessed: simple random sampling and two-stage cluster sampling. The processes were evaluated through the allocation of sampling units with different dimensions, and the effectiveness of the generated estimators was analyzed as a function of stand density and basal area. Simple random sampling resulted in the smallest errors, reaching 9% when all species were sampled together. The method depicted forest phytosociological parameters with greater sensitivity, whereas two-stage cluster sampling produced the least accurate estimators and presented slower responses to variation in phytosociological parameters. |
| Databáze: | Directory of Open Access Journals |
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