Determinantes do desmatamento em pequenas propriedades na Amazônia: um estudo de caso em Uruará - PA

The main objective of this paper was to analyse the factors that influence deforestation in small rural farms of a colonization area in Brazil’s Amazon Region. It was used data from 138 small farms distribuited over the transamazonic road in the municipality of Uruará, PA. The data was collected during july and august of 2002. A Tobit model with sample selectivity with etimation in two stages (Heckman) was used. In the first stage, the probability of deforestation was explained mainly by the presence of cattle in the farm. In the second stage, the deforestation area was modeled as a function of various factors. The results showed that the main determinants of deforestation are the amount paid for lired labor, the distance from the main road, the number of cattle heads and the number of people that live in the lot of land.Brasilian Amazon, Deforestation, Colonization, Tobit model, Environmental Economics and Policy,

Determinantes do desmatamento em pequenas propriedades na Amazônia: um estudo de caso em Uruará - PA

The main objective of this paper was to analyse the factors that influence deforestation in small rural farms of a colonization area in Brazil’s Amazon Region. It was used data from 138 small farms distribuited over the transamazonic road in the municipality of Uruará, PA. The data was collected during july and august of 2002. A Tobit model with sample selectivity with etimation in two stages (Heckman) was used. In the first stage, the probability of deforestation was explained mainly by the presence of cattle in the farm. In the second stage, the deforestation area was modeled as a function of various factors. The results showed that the main determinants of deforestation are the amount paid for lired labor, the distance from the main road, the number of cattle heads and the number of people that live in the lot of land

Determinantes do desmatamento em pequenas propriedades na Amazônia: um estudo de caso em Uruará-PA

Este trabalho analisou os determinantes do desmatamento em pequenas propriedades na Amazônia, em uma área de colonização localizada ao longo da rodovia Transamazônica, no município de Uruará - PA. Foram aplicados 138 questionários na área de estudo, durante os meses de julho e agosto de 2002. Estimou-se um modelo Tobit com seletividade amostral, utilizando o método de Heckman, em dois estágios, visando corrigir possíveis problemas de viés e inconsistência existentes nas estimativas por MQO. Os resultados encontrados sugerem que os principais determinantes do desmatamento possam ser a distância da estrada principal e o número de diárias pagas no período de um ano, os quais foram significativos a 1% e 5%, respectivamente. A presença da pecuária foi também importante para determinar as chances de ocorrer desmatamento na região estudada