On Price Liberalization, Poverty, and Shifting Cultivation: An Example from Mexico
构建生物经济模型，以墨西哥尤卡坦半岛的家庭和农业生态数据校准，分析价格政策对轮垦农业土地利用的影响，发现玉米价格自由化及后NAFTA时期实际工资变化对家庭劳动多样化和土地决策有非预期效应，且收入与森林砍伐及土壤肥力呈U型关系。
<i>A bioeconomic model is used to explore the potential impacts of price policies on land use under shifting cultivation. The model is calibrated with household level and agroecological data from Yucatan, Mexico. Besides the direct effect of the liberalization of maize prices, the results indicate that changes in real wages in post-NAFTA Mexico may have non-expected effects on the labor diversification and land-use decisions of households. Further, it is shown that income may well be inversely related to both the suboptimal level of forest clearing, and the state of soil fertility, albeit in a non-monotonic (U-shape) way.</i>