Poverty and prosperity among migrant settlers in the Amazon rainforest frontier of Ecuador
基于1990年厄瓜多尔东北亚马逊的概率抽样调查数据，分析移民农户收入和资产的决定因素，发现土地面积、市场距离、居住时长、土壤质量、技术援助、非农就业和初始财富对当前收入有正向影响，并讨论了政策含义和生态后果。
Household-level interview data from a probability sample survey conducted in the northeastern Ecuadorian Amazon in 1990 are used to examine the determinants of income and assets among migrant farmers in the agricultural frontier. Multivariate analysis indicates that size of plot owned, proximity to markets, duration of residence, quality of soil, receipt of technical assistance, off-farm employment and initial wealth positively influence current household income and wealth. More land in cattle pasture is also associated with higher status. Some settlers are prospering relative to others despite variable soil quality, unsustainable land uses, geographic isolation, apparent scarcity of labor, and lack of supportive infrastructure. The article closes with a discussion of implications for policies to assist small farmers, with some consideration of the potential ecological consequences of farmers' activities.