Skip to Main content Skip to Navigation
Theses

Relations spatiales entre les ressources biophysiques et les dynamiques d’occupation du sol du front pionnier en Amazonie orientale

Abstract : The Amazon has been subject to a rapid change in land use due to deforestation for several decades and more recently to the expansion of annual crops like soybeans. One of the major challenges is to understand better the spatial dynamics of these processes and its determinants. With the reduction of deforestation and the consolidation of pioneer fronts, natural resources and constraints seem to be gaining in importance in farmers' choices. The objective of this research was to assess the role of biophysical factors in land use dynamics since 2000 and to anticipate possible futures in a consolidated Amazonian pioneer frontier, the municipality of Paragominas. We implemented a spatially explicit model to identify the spatial distribution of change processes in relation to different factors. Interviews with farmers explain the underlying strategy. The results show different strategies for the use of biophysical resources according to the types of production, the size of the farms, the distance to roads and villages and the spatial distribution of biophysical resources in the farm. The strategies evolve over time, in relation to production and technological advances, and are organized in space. A better understanding of the importance of biophysical resources on the evolution of pioneer fronts through this type of method could provide support for land-use policies.
Document type :
Theses
Complete list of metadatas

Cited literature [271 references]  Display  Hide  Download

https://halshs.archives-ouvertes.fr/tel-02385128
Contributor : Abes Star :  Contact
Submitted on : Friday, January 17, 2020 - 8:54:56 AM
Last modification on : Tuesday, June 2, 2020 - 5:08:02 PM

File

2019LEMA3014.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-02385128, version 2

Citation

Reinis Osis. Relations spatiales entre les ressources biophysiques et les dynamiques d’occupation du sol du front pionnier en Amazonie orientale. Géographie. Université du Maine, 2019. Français. ⟨NNT : 2019LEMA3014⟩. ⟨tel-02385128v2⟩

Share

Metrics

Record views

194

Files downloads

197