Barbieri Alisson Flávio, Carr David L, Bilsborrow Richard E
Department of Demography, Center for Regional Development and Planning (CEDEPLAR), Federal University of Minas Gerais (UFMG), Av. Antonio Carlos 6627, CEP 31270-901, Belo Horizonte, MG, Brazil e-mail:
Popul Res Policy Rev. 2009 Jan 1;28(3):291-320. doi: 10.1007/s11113-008-9100-y.
Since the 1970s, migration to the Amazon has led to a growing human presence and resulting dramatic changes in the physical landscape of the Northern Ecuadorian Amazon frontier, including considerable deforestation. Over time, a second demographic phenomenon has emerged with the children of the original migrants leaving settler farms to set out on their own. The vast majority have remained in the Amazon region, some contributing to further changes in land use via rural-rural migration to establish new farms and others to incipient urbanization. This paper uses longitudinal, multi-scale data on settler colonists between 1990 and 1999 to analyze rural-rural and rural-urban migration among second-generation colonists within the region. Following a description of migrants and settlers in terms of their individual, household and community characteristics, a multinomial discrete-time hazard model is used to estimate the determinants of out-migration of the second generation settlers to both urban and rural areas. We find significant differences in the determinants of migration to the two types of destinations in personal characteristics, human capital endowments, stage of farm and household lifecycles, migration networks, and access to community resources and infrastructure. The paper concludes with a discussion of policy implications of migrants' choice of rural versus urban destinations.
自20世纪70年代以来,向亚马逊地区的移民导致该地区人类活动日益增加,厄瓜多尔北部亚马逊边境的自然景观也因此发生了巨大变化,包括大量森林砍伐。随着时间的推移,出现了第二种人口现象,即最初移民的子女离开定居农场,开始独立生活。绝大多数人仍留在亚马逊地区,一些人通过农村到农村的迁移进一步改变了土地利用方式,建立了新农场,另一些人则推动了初期的城市化进程。本文利用1990年至1999年间定居殖民者的纵向、多尺度数据,分析了该地区第二代殖民者的农村到农村和农村到城市的迁移情况。在描述了移民和定居者的个人、家庭和社区特征之后,使用多项离散时间风险模型来估计第二代定居者向城市和农村地区外迁的决定因素。我们发现,在个人特征、人力资本禀赋、农场和家庭生命周期阶段、移民网络以及获得社区资源和基础设施方面,向这两种目的地迁移的决定因素存在显著差异。本文最后讨论了移民选择农村还是城市目的地的政策含义。