中文摘要：

以福利经济学的反贫困思想为基础，通过建立社会效用分解模型和向量误差修正模型，从实证角度分析西部地区的反贫困动态和绩效。实证结果表明，西部地区的反贫困总体成效显著，而经济增长是其减贫的主要推动力；当前西部经济已显现出“亲贫式”的增长态势；收入分配不公仍然是阻碍西部减贫的一个重要因素，但近年其对减贫的影响随着收入差距的缩小而逐渐减弱；财政支农支出的增加对农村居民生活水平的提高没有显著影响。

英文摘要：

Based on anti-poverty ideas of welfare economics, the anti-poverty dynamics and performance of western China were analysed. Social utility decomposition model and vector error correction model were established according to a database from 12 provinces of western China. The results showed that the pov- erty was reduced significantly, and the economic growth was the main driving force for the poverty reduction; the western economy has shown some ＂pro-poor＂ growth; the unfair income distribution was an important factor impeding the western poverty reduction; however, the effect of unfair income distribution on the poverty reduction decreased with the income gap narrowing in recent years; the fiscal expenditure had little effect on the living standards of rural residents.