10 documents found, page 1 of 1

Size of plots and forms for forest inventory of tree species in central Amazon

One of the main tools to quantify and to qualify the forest potentials is the forest inventory. During its planning phase it is necessary to define the sampling intensity as well as the sizes and shapes of sample units to minimize data collection costs while increasing the precision of the forest inventory. This study aimed to test different sizes and shapes of sample units for different diameters at breast hei...

The Amazon forest and the rain

The article "The Amazon Forest and the rain" shows that the average annual rainfall is the main weather variable for the forestry sector in the Amazon. The average annual temperature has little variation in the Amazon; only 8%. The average annual rainfall has a greater variation, almost 100%. The growth and increment of Amazonian trees show significant correlations with precipitation. The interannual precipitat...

Influence of plot size in Weibull's diameter distribution function precision in...

Influence of plot size in Weibull's diameter distribution function precision in a primary forest in Central Amazon. This research aimed to evaluate how the observed data of Amazonian forest can be fitted to Weibull's probabilistic function and the influence of plot size to the fitness as well. The Weibull probabilistic function is an important tool for forest management. In this study it was used 15 different p...

Influência do tamanho da parcela na precisão da função de distribuição diamétri...

A floresta amazônica e a água da chuva

Perspectivas do manejo florestal sustentável para a Amazônia brasileira

Influência do Tamanho da Parcela na Precisão da Função da Distribuição Diamétri...

Dynamics of tropical forest twenty-five years after experimental logging in cen...

Long-term studies of the dynamics of managed forests in tropical regions are lacking. This study aimed to evaluate the dynamics of a tropical forest, over a 25-year period, that was experimentally logged in 1987 and 1988 and submitted to three different cutting intensities. All trees with diameter at breast height (DBH) ≥ 10 cm have been measured annually since 1990. The three logging intensities that were appl...

Dinâmica de volume e biomassa da floresta de terra firme do Amazonas

Orientador : Prof. Dr. Nelson Y. Nakajima; Coorientadores : Prof. Dr. Sebastião do Amaral Machado e Prof. Dr. Joaquim dos Santos; Tese (doutorado) - Universidade Federal do Paraná, Setor de Ciências Agrárias, Programa de Pós-Graduação em Engenharia Florestal. Defesa: Curitiba, 06/04/2015; Inclui referências : f. 160-176; Área de concentração : Manejo florestal; Resumo: Na Amazônia brasileira, a cobertura flores...

A influencia do tamanho da parcela na precisão da função de distribuição de diâ...

A constituição brasileira estabelece que a floresta amazônica é um bem comum de todos. Existem leis que disciplinam o manejo florestal sustentável e que prevê os tipos de crimes ambientais e suas respectivas punições. Ainda assim o desmatamento na floresta amazônica continua acontecendo com números impressionantes e suas principais causas são a pecuária, a agricultura e a exploração de madeira predatória e sem ...