Amazonian Deforestation and the Structure of Households

项目描述（由申请人提供）：本项目研究亚马孙流域人口与环境的相互关系。我们以空间明确的方式考虑家庭人口变化对土地利用的影响，以及生物物理环境对家庭成员生育和迁移行为的影响。已经发现在人口和环境之间起中介作用的一些变量，需要对这种复杂的相互关系进行详细的检查。在这个项目中，我们将调查巴西帕拉州Altamira和Santarem两个相邻研究区域的952个家庭，这使我们不仅可以研究边境第一代定居者（Altamira）的行为，还可以研究第二代和第三代定居者（Santarem）的动态。我们大量利用1972年至今的Landsat卫星数字数据时间序列；该地区财产边界的地理信息系统覆盖层，允许家庭与土地利用变化以及交通、水文和地形信息进行一对一的关联；以及对952个家庭的地理参考调查，该调查检查了土地使用和森林砍伐决策以及家庭人口统计。该研究将探讨人口与环境的代际动态、气候变化对森林砍伐选择的影响，以及城乡居民在土地利用和劳动力分配选择上的差异。

DESCRIPTION (provided by applicant): This project addresses the reciprocal relationship between population and environment in the Amazon Basin. We consider the influences of the changing demography of households on land use and the influences of the biophysical environment on the fertility and migration behaviors of household members in a spatially-explicit fashion. A number of variables have been found to mediate between population and environment, requiring detailed examination of this complex, reciprocal relationship. In this project we will survey 952 households in two adjacent study areas, Altamira and Santarem, Para State, Brazil that allows us to study not just the behavior of the first generation of settlers in the frontier (Altamira) but also second and third generation dynamics (Santarem). We make intensive use of Landsat satellite digital data time series from 1972 to the present; a GIS overlay of the property boundaries in the region that permits a one-to-one relating of households to land use changes, as well as transportation, hydrologic, and topographic information; and a georeferenced survey of the 952 households that examines land use and deforestation decisions and the demography of households. The research will address intergenerational population-and-environment dynamics, the impact of climate changes on deforestation choices, and the differences in land use and labor allocation choices made by rural and urban residents.