中文摘要：

通过构建消费者离散选择嵌套偏好模型对收入水平与出口产品质量、出口国规模进行理论分析,将贸易分解为广延和集约边际,同时将集约边际分解为价格、数量和质量变化三部分,利用2008—2012年中国的进口及伙伴国产品层次数据,检验出口国收入、规模等因素与出口产品质量、价格和数量之间的关系。结果表明贸易集约边际是出口扩张的主要因素,相对富裕国家出口更多高质量产品,产品质量与出口国收入呈正向相关,相对富裕出口国通过调整产品质量以相对稳定的价格出口产品,而劳动力相对丰裕的国家则更多地通过价格调整来实现出口扩张。

英文摘要：

By constructing the consumer preference nested - logit model, the paper builds up a theoretical model about the relationship with the exporter＇s income and the quality of export products. Then by employing the eeonomettle and making use of the panel data of Chinese import during 2008--2012 ,the relationship among the income, export scale, the price, quantity and export products quality is studied. The result indicates that product quality is positively correlated with exporter＇s income, relatively wealthy exporters export product at stable price through the adjustment of product quality, and affluent labor countries expand export by adjusting the price.