国际贸易 应用:国际贸易 International trade Application International Trade 什么决定一个国家 进口还是出口某 第9章 物品? What determines pter 9 whether a country a good? 国际贸易 国际贸易 International trade International trade 哪些是人们用以赞成 从各国间的自由贸易 限制贸易的论点? 中谁受益谁受损? What are the Who gains and who its that people loses from free trade use to advocate trade among countries? restrictions? 没有贸易时的均衡 没有贸易时的均衡 Equilibrium Without Trade Equilibrium Without Trade 假设: Assume: 一个国家与世界隔绝,生产钢铁。 国内供给 A country is isolated from rest of the world Domestic supply 钢铁市场由该国的买着和卖者组成 The market for steel consists of the buvers sellers in the country. Equilib地价着 ◆该国中没有任何人被允许进口或出口钢铁 No one in the country is allowed to import or 国内需求 export steeL 均,量 Equilibrium quantity
1 应用：国际贸易 Application: International Trade 第9章 Chapter 9 2 国际贸易 International Trade 什么决定一个国家 进口还是出口某一 物品？ What determines whether a country imports or exports a good? 3 国际贸易 International Trade 从各国间的自由贸易 中谁受益谁受损？ Who gains and who loses from free trade among countries? 4 国际贸易 International Trade 哪些是人们用以赞成 限制贸易的论点？ What are the arguments that people use to advocate trade restrictions? 5 没有贸易时的均衡 Equilibrium Without Trade 假设：Assume: 一个国家与世界隔绝，生产钢铁。 A country is isolated from rest of the world and produces steel. 钢铁市场由该国的买者和卖者组成。 The market for steel consists of the buyers and sellers in the country. 该国中没有任何人被允许进口或出口钢铁。 No one in the country is allowed to import or export steel. 6 没有贸易时的均衡 Equilibrium Without Trade... 钢铁价格 Price of Steel 均衡价格 Equilibrium Price 0 钢铁数量Quantity of Steel 均衡数量 Equilibrium quantity 国内供给 Domestic supply 国内需求 Domestic demand 生产者剩余 Producer surplus 消费者剩余 Consumer surplus
没有贸易时的均衡 世界价格和比较优势 Equilibrium Without Trade World Price and comparative 结果: Results: Advantage ◆国内价格调整到需求和供给平衡。 Domestic price adjusts to balanc demand and supply. 如果该国决定开放国际贸易,它会 消卖者得到的者剩盆之和衡置了买者 成为钢铁的进口国还是出口国? If the country decides to engage in surplus measures the total benefits that international trade, will it be an buyers and sellers receive Importer or exporter of steel? 世界价格和比较优势 世界价格和比较优势 World Price and Comparative World Price and Comparative Advantage Advantage 较没有贸易时的某物品的国内价格和该物品的世界价格 如果一个国家具有比较优势,那么国内 看出自由贸易的结果 价格就低于世界价格,该国就会是这 The effects of free trade can be shown by comparing the domestic price of a good without trade and the world price 物品的出口国。 f the good. The world price refers to the prevailing price in If a country has a comparative 个国家或者是某物品的进口国或者是它的出口国 advantage, then the domestic price will Bo Country will either be an exporter or an importer of the be below the world price, and the country will be an exporter of the good 世界价格和比较优势 出口国的国际贸易 International trade in an World Price and Comparative Advantage Exporting Country'“内yp 如果该国不具有比较优势,那么国内价格 就高于世界价格,该国就会是这一物品的 贸易后的价 世界价 If the country does not have a comparative dvantage, then the domestic price will be trade higher than the world price, and the country will be an importer of the good 国内需求 内■内 Quantity of Steel
2 7 没有贸易时的均衡 Equilibrium Without Trade 结果：Results: 国内价格调整到需求和供给平衡。 Domestic price adjusts to balance demand and supply. 消费者和生产者剩余之和衡量了买者 和卖者得到的总利益。 The sum of consumer and producer surplus measures the total benefits that buyers and sellers receive. 8 世界价格和比较优势 World Price and Comparative Advantage 如果该国决定开放国际贸易，它会 成为钢铁的进口国还是出口国？ If the country decides to engage in international trade, will it be an importer or exporter of steel? 9 世界价格和比较优势 World Price and Comparative Advantage 比较没有贸易时的某物品的国内价格和该物品的世界价格 就可看出自由贸易的结果。 The effects of free trade can be shown by comparing the domestic price of a good without trade and the world price of the good. The world price refers to the prevailing price in the world markets. 一个国家或者是某物品的进口国或者是它的出口国。 A country will either be an exporter or an importer of the good. 10 世界价格和比较优势 World Price and Comparative Advantage 如果一个国家具有比较优势，那么国内 价格就低于世界价格，该国就会是这一 物品的出口国。 If a country has a comparative advantage, then the domestic price will be below the world price, and the country will be an exporter of the good. 11 世界价格和比较优势 World Price and Comparative Advantage 如果该国不具有比较优势，那么国内价格 就高于世界价格，该国就会是这一物品的 进口国。 If the country does not have a comparative advantage, then the domestic price will be higher than the world price, and the country will be an importer of the good. 钢铁的价格 Price of Steel 0 钢铁的数量 Quantity of Steel 国内需求 Domestic demand 出口国的国际贸易 International Trade in an Exporting Country... 国内供给 Domestic supply 世界价 格 World price 贸易后的价格 Price after trade 出口 Exports 国内需求量 Domestic quantity demanded 国内供给量 Domestic quantity supplied 贸易前的价格 Price before trade
自由贸易如何影响出口国的福利 自由贸易如何影响出口国的福利 How Free Trade Affects welfare in How Free Trade Affects Welfare in an Exporting Country an Exporting Country. 国内供给 Domestic re trade Price after trade emand ou stti 自由贸易如何影响出口国的福利 How Free Trade Affects welfare in 自由贸易的福利变动:出口国的情况 an Exporting Country. Changes in Welfare from Free Trade The Case of an Exporting Country 贸易后的消者啊余 supply er surplus 真前 Before trade责易后 After Trade变动 Change Price 世界价格 物 Consumer Price before B+C+D 真Tota| Surplus 昌后的生产者 Producer surplus 面积D表示总剩余增加,并代夜从贸易中受益 The area D shows the increase in total surplus and represents the gains from trade 自由贸易如何影响出口国的福利 国际贸易和进口国 How free trade Affects Welfare in International Trade and the an Exporting Country Importing Country 对出口国的分析得出两个结论 The analysis of an exporting country yields two 如果世界价格低于国内价格,当贸易 conclusions: ◆该物品的国内生产者状况变好,而国内消费者状况变 被允许的时候,该国将会成为钢铁的 进口 omestic producers of the good are better off, and If the world price of steel is lower domestic consumers of the good are worse than the domestic price, the country ◆贸易增加了一国的整体的经济福利。 will be porter of steel when Trade raises the economic well-being of the nation as a whole trade is permitted
3 13 Price of Steel 0 Quantity of Steel 世界价格 World price 国内需求Domestic demand 自由贸易如何影响出口国的福利 How Free Trade Affects Welfare in an Exporting Country... 国内供给Domestic supply 贸易后价格 Price after trade 贸易前价格 Price before trade A B C D 出口 Exports 14 Price of Steel 0 Quantity of Steel World price Domestic demand 自由贸易如何影响出口国的福利 How Free Trade Affects Welfare in an Exporting Country... Domestic supply Price after trade Price before trade A 贸易前的消费者剩余 Consumer surplus before trade B C 贸易前的生产者剩余 Producer surplus before trade 15 Price of Steel 0 Quantity of Steel 世界价格 World price Domestic demand 自由贸易如何影响出口国的福利 How Free Trade Affects Welfare in an Exporting Country... Domestic supply Price after trade Price before trade A 贸易后的消费者剩余 Consumer surplus after trade C B 贸易后的生产者剩余 Producer surplus after trade D 出口 Exports 16 自由贸易的福利变动：出口国的情况 Changes in Welfare from Free Trade: The Case of an Exporting Country 面积D 表示总剩余增加，并代表从贸易中受益。 The area D shows the increase in total surplus and represents the gains from trade. 贸易前Before Trade 贸易后After Trade 变动Change 消费者剩余Consumer Surplus A + B A - B 生产者剩余Producer Surplus C B + C + D + (B + D) 总剩余Total Surplus A + B + C A + B + C + D + D 17 自由贸易如何影响出口国的福利 How Free Trade Affects Welfare in an Exporting Country 对出口国的分析得出两个结论： The analysis of an exporting country yields two conclusions: 该物品的国内生产者状况变好，而国内消费者状况变 坏。 Domestic producers of the good are better off, and domestic consumers of the good are worse off. 贸易增加了一国的整体的经济福利。 Trade raises the economic well-being of the nation as a whole. 18 国际贸易和进口国 International Trade and the Importing Country 如果世界价格低于国内价格，当贸易 被允许的时候，该国将会成为钢铁的 进口国。 If the world price of steel is lower than the domestic price, the country will be an importer of steel when trade is permitted
国际贸易和进口国 国际贸易和进口国 International trade and the International Trade and the Importing Country Importing Country 国内消费者想买较低的国际价格的 由于国内价格向国际价格移动,国 钢铁。 内生产者将降低它们的产量 Domestic consumers will want to buy Domestic producers of steel will have steel at the lower world price. to lower their output because the domestic price moves to the world price. 国际贸易和进口国 自由贸易如何影响进口国的福利 Internationa/ Trade and the How Free Trade Affects welfare in importing Country. n Importing Country. 内供给 国内供始 Domestic 易前价格Pice 贸晶前价格 Price efore trade before trade 贸易后价格 實暴后价格 世界价格 自由贸易如何影响进口国的福利 自由贸易如何影响进口国的福利 How Free Trade Affects welfare in How Free Trade Affects Welfare in an Importing Country an Importing Country… 贸晶首的消贵者剩余 内供给 贸易后的消套者乘余 before trade before tr before trade 贸昌后价 贸易后价格 Price after 贸易前的生产着剩余 国内求
4 19 国际贸易和进口国 International Trade and the Importing Country 国内消费者想买较低的国际价格的 钢铁。 Domestic consumers will want to buy steel at the lower world price. 20 国际贸易和进口国 International Trade and the Importing Country 由于国内价格向国际价格移动，国 内生产者将降低它们的产量。 Domestic producers of steel will have to lower their output because the domestic price moves to the world price. 21 国际贸易和进口国 International Trade and the Importing Country... Price of Steel 0 Quantity of Steel 国内供给 Domestic supply 国内需求 Domestic demand 世界价格 World Price 贸易后价格 Price after trade 国内供给量 Domestic quantity supplied 国内需求量 Domestic quantity demanded 贸易前价格Price before trade 进口 Imports 22 自由贸易如何影响进口国的福利 How Free Trade Affects Welfare in an Importing Country... Price of Steel 0 Quantity of Steel 国内供给Domestic supply 世界价格 World Price 国内需求 Domestic demand 贸易后价格 Price after trade 贸易前价格Price before trade A B C D 进口 Imports 23 自由贸易如何影响进口国的福利 How Free Trade Affects Welfare in an Importing Country... Price of Steel 0 Quantity of Steel 国内供给 Domestic supply 世界价格 World Price 国内需求 Domestic demand 贸易后价格 Price after trade 贸易前价格Price before trade A 贸易前的消费者剩余 Consumer surplus before trade C B 贸易前的生产者剩余 Producer surplus before trade 24 自由贸易如何影响进口国的福利 How Free Trade Affects Welfare in an Importing Country... Price of Steel 0 Quantity of Steel 国内供给 Domestic supply 世界价格 World Price 国内需求 Domestic demand 贸易后价格 Price after trade 贸易前价格Price before trade A 贸易后的消费者剩余 Consumer surplus after trade B D C 贸易前的生产者剩余 Producer surplus after trade Imports
自由贸易的福利变动:进口国的情况 自由贸易如何影响进口国的福利 Changes in Welfare from Free Trade How Free Trade Affects welfare in The Case of an Importing Country an Importing Country 对出口国的分析得出两个结论 贸易前 Before trade真易后 After trade变动 Change The analysis of an importing country yields two conclusions: ◆该物品的国内生产者状况变坏,而国内消费者状况变好 B+ c of the good are better off. A+B+c A+B+c+ ◆贸易增加了一国的整体的经济福利。 Trade raises the economie well-being of the nation as a whole because the gains of consumers exceed the losses of 面积D表示总剩 从贸易中受益。 producers. The area D sho in total surplus and repre om trade 自由国际贸易中的得失 The Gains and losses from 关税 Free International Trade Tariffs ◆赢家的好处大于输家的损 ◆关税是对进口物品征收的税 The gains of the winners Tariffs are taxes on imported goods. exceed the losses of the osers. 类使知最的升英提高到 ◆总剩余的净变动是正的。 Tariffs raise the price of imported goods The net change in total surplus is positive. above the world price by the amount of ◆赢家将补偿输家吗? the tariff Will the winne compensate the losers 关税的影响 关税的影响 The Effects of a Tariff. The Effects of a tariff 国内供给 时的消费着余日内供给 关税时的生产者剩众 before tari 能 无关税时的 世界价 without t 无关税时的进口 Imports without tarif
5 25 自由贸易的福利变动：进口国的情况 Changes in Welfare from Free Trade: The Case of an Importing Country 面积D 表示总剩余增加，并代表从贸易中受益。 The area D shows the increase in total surplus and represents the gains from trade. 贸易前Before Trade 贸易后After Trade 变动Change 消费者剩余 Consumer Surplus A A + B + D + (B + D) 生产者剩余Producer Surplus B + C C - B 总剩余Total Surplus A + B + C A + B + C + D + D 26 自由贸易如何影响进口国的福利 How Free Trade Affects Welfare in an Importing Country 对出口国的分析得出两个结论： The analysis of an importing country yields two conclusions: 该物品的国内生产者状况变坏，而国内消费者状况变好 Domestic producers of the good are worse off, and domestic consumers of the good are better off. 贸易增加了一国的整体的经济福利。 Trade raises the economic well-being of the nation as a whole because the gains of consumers exceed the losses of producers. 27 自由国际贸易中的得失 The Gains and Losses from Free International Trade 赢家的好处大于输家的损 失。 The gains of the winners exceed the losses of the losers. 总剩余的净变动是正的。 The net change in total surplus is positive. 赢家将补偿输家吗？ Will the winners compensate the losers? 28 关税 Tariffs 关税是对进口物品征收的税。 Tariffs are taxes on imported goods. 关税使进口物品的价格提高到世界价格 之上，其增加量等于关税。 Tariffs raise the price of imported goods above the world price by the amount of the tariff. 29 Price with tariff 世界价 格 World price Price without tariff 关税的影响 The Effects of a Tariff... Price of Steel 0 Quantity of Steel 国内供给 Domestic supply 国内需求 Domestic demand 关税Tariff Q1 S Q1 D 无关税时的进口Imports without tariff 有关税时的 进口 Imports with tariffQ2 Q D 2 S 30 关税的影响 The Effects of a Tariff... Price of Steel 0 Quantity of Steel 国内供给 Domestic supply 国内需求 Domestic demand 世界价 格 World price Q1 S Q1 D 无关税时的价 格Price without tariff 无关税时的进口Imports without tariff 无关税时的消费者剩余 Consumer surplus before tariff 无关税时的生产者剩余 Producer surplus before tariff