中文摘要：

全球采购背景下，供应商选择成为企业运营决策的关键．为研究碳限额与交易机制以及汇率波动对企业供应商选择策略的影响，本文以包括管理成本、采购成本、运输成本、库存成本以及碳交易成本的总成本最小化为目标，建立随机混合整数规划模型，探讨拥有多个采购站点的一个企业向不同的供应商采购产品的供应商选择和分配问题．研究表明，汇率波动会对供应商的选择产生影响，波动的不确定性对供应商选择决策的影响不同．相较于固定汇率确定性模型，浮动汇率确定性模型可以增加期望利润．另外，无论是否存在汇率波动，采用随机模型代替确定性模型会进一步增加期望利润．同时，碳限额与碳价格也会对供应商的选择决策产生影响．碳限额低时，企业的采购成本会逐渐上升，进而影响企业的采购决策；碳价格上升也会增加企业的采购成本，此时企业的订购量会呈“阶梯状”变化．

英文摘要：

Supplier selection has become critical in operating decisions in global supply chain manage- ment. We study the problem of suppliers＇ selection in the presence of carbon trading and uncertain of currency exchange rates. We specifically consider a buyer with nmltiple sites sourcing a product from heterogeneous suppliers and address both the supplier selection and purchased quantity decision. We model the problem using the mixed integer scenario-based stochastic programming method. Tile objective is to minimize tile total system expected cost, including supplier management cost, purcilased price, inventory cost, transportation cost, carbon trading cost. Our analysis shows that the exchange rate volatility call affect supplier selection. Compared with fixed exchange rate model, fluctuating exchange rate model is more profitable. Further, the more sophisticated stochastic model we proposed, compared with a simple deternfinistie inodel, can increase the yield, no matter whether any fluctuation exists. In addition, carbon caps and carbon price will also affect the supplier selection. Tile lower carbon caps, the higher the purchase cost, therefore companies＇ purchasing strategy will be adjusted accordingly. The purchasing cost will increase as carbon price increase, which leads to a shape of staircase for the amount of the order quantity.