EQUATIONS TO ESTIMATE TREE GAPS IN A PRECISION FOREST MANAGEMENT AREA THE AMAZON BASED ON CROWN MORPHOMETRY

Autor: Evaldo Muñoz Braz, Evandro Orfanó Figueiredo, M. V. N. d' Oliveira, Daniel de Almeida Papa, Philip M. Fearnside
Přispěvatelé: EVANDRO ORFANO FIGUEIREDO, CPAF-Acre, MARCUS VINICIO NEVES D OLIVEIRA, CPAF-Acre, Philip Martin Fearnside, Instituto Nacional de Pesquisas da Amazônia (Inpa), EVALDO MUNOZ BRAZ, CNPF, DANIEL DE ALMEIDA PAPA, CPAF-Acre.
Jazyk: angličtina
Rok vydání: 2018
Předmět:
0106 biological sciences
Canopy
010504 meteorology & atmospheric sciences
Manejo forestal
Tropical forests
Forest profiling
01 natural sciences
Análisis estadístico
LIDAR
Forest cover
Análisis de regresión
Espacios vacíos en el dosel
Acre
Exploração madeireira
lcsh:Forestry
Floresta Estadual do Antimary (AC)
Impact area
Biometria
Lidar
Administração florestal
Forest management
Amazon rainforest
Perfilamento florestal
Copa de los árboles
Raio laser
Statistical analysis
Linear regression model
Manejo Florestal
Bujari (AC)
Regression analysis
Lásers
Sena Madureira (AC)
Biometry
010603 evolutionary biology
Árvores
Modelo de regressão linear
Canopy gaps
Colheita florestal
0105 earth and related environmental sciences
Floresta tropical
Hydrology
Tree crown
Morphometry
Análise estatística
Clareira
State forest
Morfometría
Copa
Environmental science
Manejo de precisão
Amazonia Occidental
lcsh:SD1-669.5
Regressão linear
Amazônia Ocidental
Western Amazon
Bosques tropicales
Zdroj: Revista Árvore, Vol 41, Iss 3 (2018)
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA-Alice)
Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
Repositório Institucional do INPA
Instituto Nacional de Pesquisas da Amazônia (INPA)
instacron:INPA
Revista Árvore, Volume: 41, Issue: 3, Article number: e410313, Published: 22 FEB 2018
Revista Árvore v.41 n.3 2017
Revista Árvore
Universidade Federal de Viçosa (UFV)
instacron:SIF
ISSN: 1806-9088
Popis: The precision forest management technique still has much to be improved with the incorporation of forest biometric techniques and forest profiling with airborne LIDAR. When planning the cutting of a tree in forest management, the volume to be produced for industry is estimated but not the area impacted by removal of the tree. The objective of the present study was to develop equations for the Amazon rainforest that are able to estimate the impact area of gaps from harvesting individual dominant and co-dominant trees based on the canopy morphology obtained through forest profiling. On two separate occasions profiles were made in an annual forest-production unit in the Antimary State Forest (FEA) in the state of Acre, Brazil. The first was done a few days before the start of logging in 2010 and the second was done after completion of harvest activities in 2011. With field measurements and processing of the cloud of LIDAR points, dendrometric and morphometric variables were obtained for the canopy in order to develop equations for estimating gap areas. After evaluation of the explanatory variables with the highest correlation with gap area, the method used considered all possible models and included 2-4 parameters. The explanatory variables that best represent the impact of clearings are volume of the crown (VCop) and crown-projection area (APC). Ten equations were selected, of which two were chosen for use; these had R2 aj > 75% and Syx 75% e Syx < 23%. O bom ajuste das equações demonstra o potencial do uso do LIDAR visando obter informações para se estimar previamente as clareiras pela extração de árvores de diferentes dimensões.
Databáze: OpenAIRE
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