曼昆经济学原理第5版微观第九章.ppt

应用：国际贸易 * 一个进口等离子电视的国家 没有贸易时， PD = $3000 Q = 400 PW = $1500 有贸易时, 国内消费者的需求 600 国内生产者的供给 200 进口= 400 P Q D S $1500 200 $3000 400 600 等离子电视 进口 应用：国际贸易 * 一个进口等离子电视的国家 没有贸易时， CS = A PS = B + C 总剩余 = A + B + C 有贸易时， CS = A + B + D PS = C 总剩余 = A + B + C + D P Q D S $1500 $3000 等离子电视 A B D C 贸易的收益 进口 应用：国际贸易 * 到2004.12.31, 美国对于服装与纺织品的配额过期 2005年1月： 美国从中国进口的这些产品增长超过70%. 美国纺织业减少了12，000个工作岗位 美国的纺织业与工会争取新的贸易限制，而全国零售商联合会反对任何贸易限制 新闻报道：来自中国的纺织品 2005年11月，布什政府同意限制从中国进口的这些物品的增长 0 本章结束 This relatively short chapter has a few main objectives: Welfare analysis of free trade in a good that a country exports, relative to no trade. Welfare analysis of free trade in a good that the country imports, relative to no trade. Welfare analysis of a tariff, relative to free trade in a good the country imports. The most common arguments for restricting imports, and the economist’s response to each. * The notation PW and PD introduced here is not in the textbook. * Students may not be aware of the economic importance of soybeans. In fact, soybeans are big business in the U.S. In 2007, U.S. farmers produced 2.6 billion bushels of soybeans. The average price was $10.40/bushel, for a total of $26.8 billion. Soybeans provided 71% of the edible consumption of fats and oils in the U.S. The U.S. exported 1.0 billion bushels of soybeans, earning $12.9 billion from exports. This amounts to 37% of international trade in soybeans. The biggest purchasers of U.S. soybeans are: China ($4.1 billion), Mexico ($1.1 billion), Japan ($1.1 billion), and Europe ($1.0 billion). Source: American Soybean Association, /2008 Before covering this slide, alert your students that, in just a moment, they will be asked to do some analysis very similar to the analysis shown on this and the following slide. In this case, PD PW, so this country will export soybeans. The quantity of exports is simply the difference between the domestic quantity supplied and the domestic quantity demande