COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL
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Publication Date: | 2015 |
Other Authors: | , |
Format: | Article |
Language: | por |
Source: | Cerne (Online) |
Download full: | https://cerne.ufla.br/site/index.php/CERNE/article/view/500 |
Summary: | The objective of this research was to compare results of volumes per hectare and per diameter class obtained with the following evaluation methods: 1. Conventional forest inventory. 2. Stand volume table; 3. Diameter distribution. The data came from the Parana Pine (Araucaria angustifolia) forest inventory carried out in 1977 and 1978 in southern region of Brazil. Diameter at breast height (DBH), and height of every tree with DBH ³ 20 cm were measured in 322 plots with dimensions of 20 x 125 m (2500 m²), (167 plots located in old growth forests and 156 plots in secondary forest of Parana Pine), scatered over the whole region of natural distribution of this tree species in Southern Brazil. After data processing it was obtained total volumes outside bark of 435.00 m³ and 167.62 m³ per hectare respectivly for forest type I and II, estimated through method 1. Results from method 2 were 444.21 and 177.46 m³ per hectare respectively, and from method 3 were 404.43 and 165.64 m³ per hectare for types I and II, respectively. Statistical comparison of results obtained from the three evaluation methods was done through analysis of variance with a randon bloks design. When a significant difference was identified, the Scott-Knott test of means comparison was performed at 5% of probability. For the ANOVA the methods were considered as treatments, and the diameter classes, as blocks. This test detected that the results from the methods 1 and 2 were statisticaly identicals, but both differred from the results obtained by method 3 for forest type I. The same analysis performed for forest type II did not showed any significant difference among treatments. Thus, for forest type II all methodos provided statiscally similars volume estimates per hectare. |
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COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZILConventional forest inventorystand volume equationdiameter distributionParana PineThe objective of this research was to compare results of volumes per hectare and per diameter class obtained with the following evaluation methods: 1. Conventional forest inventory. 2. Stand volume table; 3. Diameter distribution. The data came from the Parana Pine (Araucaria angustifolia) forest inventory carried out in 1977 and 1978 in southern region of Brazil. Diameter at breast height (DBH), and height of every tree with DBH ³ 20 cm were measured in 322 plots with dimensions of 20 x 125 m (2500 m²), (167 plots located in old growth forests and 156 plots in secondary forest of Parana Pine), scatered over the whole region of natural distribution of this tree species in Southern Brazil. After data processing it was obtained total volumes outside bark of 435.00 m³ and 167.62 m³ per hectare respectivly for forest type I and II, estimated through method 1. Results from method 2 were 444.21 and 177.46 m³ per hectare respectively, and from method 3 were 404.43 and 165.64 m³ per hectare for types I and II, respectively. Statistical comparison of results obtained from the three evaluation methods was done through analysis of variance with a randon bloks design. When a significant difference was identified, the Scott-Knott test of means comparison was performed at 5% of probability. For the ANOVA the methods were considered as treatments, and the diameter classes, as blocks. This test detected that the results from the methods 1 and 2 were statisticaly identicals, but both differred from the results obtained by method 3 for forest type I. The same analysis performed for forest type II did not showed any significant difference among treatments. Thus, for forest type II all methodos provided statiscally similars volume estimates per hectare.CERNECERNE2015-10-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://cerne.ufla.br/site/index.php/CERNE/article/view/500CERNE; Vol. 6 No. 2 (2000); 055-066CERNE; v. 6 n. 2 (2000); 055-0662317-63420104-7760reponame:Cerne (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLAporhttps://cerne.ufla.br/site/index.php/CERNE/article/view/500/431Copyright (c) 2015 CERNEinfo:eu-repo/semantics/openAccessMachado, Sebastião A.Mello, José Márcio deBarros, Dalmo Arantes de2015-10-22T09:01:14Zoai:cerne.ufla.br:article/500Revistahttps://cerne.ufla.br/site/index.php/CERNEPUBhttps://cerne.ufla.br/site/index.php/CERNE/oaicerne@dcf.ufla.br||cerne@dcf.ufla.br2317-63420104-7760opendoar:2015-10-22T09:01:14Cerne (Online) - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL |
title |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL |
spellingShingle |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL Machado, Sebastião A. Conventional forest inventory stand volume equation diameter distribution Parana Pine |
title_short |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL |
title_full |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL |
title_fullStr |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL |
title_full_unstemmed |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL |
title_sort |
COMPARISON AMONG METHODS FOR TOTAL TIMBER VOLUME EVALUATION PER HECTARE FOR PARANA PINE IN THE SOUTHERN STATES OF BRAZIL |
author |
Machado, Sebastião A. |
author_facet |
Machado, Sebastião A. Mello, José Márcio de Barros, Dalmo Arantes de |
author_role |
author |
author2 |
Mello, José Márcio de Barros, Dalmo Arantes de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Machado, Sebastião A. Mello, José Márcio de Barros, Dalmo Arantes de |
dc.subject.por.fl_str_mv |
Conventional forest inventory stand volume equation diameter distribution Parana Pine |
topic |
Conventional forest inventory stand volume equation diameter distribution Parana Pine |
description |
The objective of this research was to compare results of volumes per hectare and per diameter class obtained with the following evaluation methods: 1. Conventional forest inventory. 2. Stand volume table; 3. Diameter distribution. The data came from the Parana Pine (Araucaria angustifolia) forest inventory carried out in 1977 and 1978 in southern region of Brazil. Diameter at breast height (DBH), and height of every tree with DBH ³ 20 cm were measured in 322 plots with dimensions of 20 x 125 m (2500 m²), (167 plots located in old growth forests and 156 plots in secondary forest of Parana Pine), scatered over the whole region of natural distribution of this tree species in Southern Brazil. After data processing it was obtained total volumes outside bark of 435.00 m³ and 167.62 m³ per hectare respectivly for forest type I and II, estimated through method 1. Results from method 2 were 444.21 and 177.46 m³ per hectare respectively, and from method 3 were 404.43 and 165.64 m³ per hectare for types I and II, respectively. Statistical comparison of results obtained from the three evaluation methods was done through analysis of variance with a randon bloks design. When a significant difference was identified, the Scott-Knott test of means comparison was performed at 5% of probability. For the ANOVA the methods were considered as treatments, and the diameter classes, as blocks. This test detected that the results from the methods 1 and 2 were statisticaly identicals, but both differred from the results obtained by method 3 for forest type I. The same analysis performed for forest type II did not showed any significant difference among treatments. Thus, for forest type II all methodos provided statiscally similars volume estimates per hectare. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-06 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/500 |
url |
https://cerne.ufla.br/site/index.php/CERNE/article/view/500 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://cerne.ufla.br/site/index.php/CERNE/article/view/500/431 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2015 CERNE info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2015 CERNE |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
CERNE CERNE |
publisher.none.fl_str_mv |
CERNE CERNE |
dc.source.none.fl_str_mv |
CERNE; Vol. 6 No. 2 (2000); 055-066 CERNE; v. 6 n. 2 (2000); 055-066 2317-6342 0104-7760 reponame:Cerne (Online) instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Cerne (Online) |
collection |
Cerne (Online) |
repository.name.fl_str_mv |
Cerne (Online) - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
cerne@dcf.ufla.br||cerne@dcf.ufla.br |
_version_ |
1789440342927343616 |