Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings
This study aimed to present an approach to model the growth and yield of the species Schizolobium amazonicum (Paricá) based on a study of different spacings located in Pará, Brazil. Whole-stand models were employed, and two modeling strategies (Strategies A and B) were tested. Moreover, the followin...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Forestry Research |
| Online Access: | http://dx.doi.org/10.1155/2013/675137 |
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| author | Gilson Fernandes da Silva Salvador Alejandro Gezan Carlos Pedro Boechat Soares Luciano Zumerle Zaneti |
| author_facet | Gilson Fernandes da Silva Salvador Alejandro Gezan Carlos Pedro Boechat Soares Luciano Zumerle Zaneti |
| author_sort | Gilson Fernandes da Silva |
| collection | DOAJ |
| description | This study aimed to present an approach to model the growth and yield of the species Schizolobium amazonicum (Paricá) based on a study of different spacings located in Pará, Brazil. Whole-stand models were employed, and two modeling strategies (Strategies A and B) were tested. Moreover, the following three scenarios were evaluated to assess the accuracy of the model in estimating total and commercial volumes at five years of age: complete absence of data (S1); available information about the variables basal area, site index, dominant height, and number of trees at two years of age (S2); and this information available at five years of age (S3). The results indicated that the 3 × 2 spacing has a higher mortality rate than normal, and, in general, greater spacing corresponds to larger diameter and average height and smaller basal area and volume per hectare. In estimating the total and commercial volumes for the three scenarios tested, Strategy B seems to be the most appropriate method to estimate the growth and yield of Paricá plantations in the study region, particularly because Strategy A showed a significant bias in its estimates. |
| format | Article |
| id | doaj-art-b2a8e8cd3b004a6ba27cbfecf057a377 |
| institution | Kabale University |
| issn | 1687-9368 1687-9376 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Forestry Research |
| spelling | doaj-art-b2a8e8cd3b004a6ba27cbfecf057a3772025-08-20T03:39:21ZengWileyInternational Journal of Forestry Research1687-93681687-93762013-01-01201310.1155/2013/675137675137Modeling Growth and Yield of Schizolobium amazonicum under Different SpacingsGilson Fernandes da Silva0Salvador Alejandro Gezan1Carlos Pedro Boechat Soares2Luciano Zumerle Zaneti3Departamento de Ciências Florestais e da Madeira, Universidade Federal do Espírito Santo, Avenida Governador Lindemberg, No. 316 Centro, 29550-000 Jerônimo Monteiro, ES, BrazilSchool of Forest Resources and Conservation, University of Florida, 363 Newins-Ziegler Hall, P.O. Box 110410, Gainesville, FL 32611-0410, USADepartamento de Engenharia Florestal, Universidade Federal de Viçosa (UFV), 36570-000, MG, BrazilCentro de Pesquisa do Paricá (CPP), BR 010, Km 18, Caixa Postal 2549, 68633-000 Dom Eliseu, PA, BrazilThis study aimed to present an approach to model the growth and yield of the species Schizolobium amazonicum (Paricá) based on a study of different spacings located in Pará, Brazil. Whole-stand models were employed, and two modeling strategies (Strategies A and B) were tested. Moreover, the following three scenarios were evaluated to assess the accuracy of the model in estimating total and commercial volumes at five years of age: complete absence of data (S1); available information about the variables basal area, site index, dominant height, and number of trees at two years of age (S2); and this information available at five years of age (S3). The results indicated that the 3 × 2 spacing has a higher mortality rate than normal, and, in general, greater spacing corresponds to larger diameter and average height and smaller basal area and volume per hectare. In estimating the total and commercial volumes for the three scenarios tested, Strategy B seems to be the most appropriate method to estimate the growth and yield of Paricá plantations in the study region, particularly because Strategy A showed a significant bias in its estimates.http://dx.doi.org/10.1155/2013/675137 |
| spellingShingle | Gilson Fernandes da Silva Salvador Alejandro Gezan Carlos Pedro Boechat Soares Luciano Zumerle Zaneti Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings International Journal of Forestry Research |
| title | Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings |
| title_full | Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings |
| title_fullStr | Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings |
| title_full_unstemmed | Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings |
| title_short | Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings |
| title_sort | modeling growth and yield of schizolobium amazonicum under different spacings |
| url | http://dx.doi.org/10.1155/2013/675137 |
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