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零售商的买方势力可以有效地推动上游供应商提升产品环保水平。综合考虑买方势力的价格折扣效应与产品环保水平提升效应,建立了地方市场上两个寡头零售商与一个上游供应商间的二阶段博弈模型。分别讨论了买方势力的双重效应对企业利润、供应链利润、消费者剩余和社会总福利的影响。研究表明,随着价格折扣幅度的增大,品牌零售商利润逐步上升,普通零售商利润逐步降低,供应商利润逐步降低,供应链利润逐步上升,消费者剩余逐步上升,社会总福利逐步上升;随着产品环保水平提高幅度的增大,品牌零售商利润先升后降,普通零售商利润逐步上升,供应商利润逐步下降,供应链利润逐步下降,消费者剩余先升后降,社会总福利逐步下降。通过数值算例对结论进行了验证。最后针对政府、供应链企业和非政府组织等给出具体建议。
Retailer buyer power can effectively promote the upstream suppliers to improve product environmental protection level. Considering the price discount effect of buyer power and the promotion effect of product environmental protection level, a two-stage game model between two oligopolistic retailers in the local market and one upstream supplier was established. The effects of the dual effects of buyer power on corporate profits, supply chain profits, consumer surplus and total social welfare are discussed respectively. The research shows that with the increase of price discount, the profits of brand retailers increase gradually, the profits of ordinary retailers decrease gradually, the profits of suppliers gradually decrease, the profits of supply chain gradually increase, the consumer surplus gradually increases and the total welfare of society gradually increases. With the increase of product environmental protection level, the profits of brand retailers rose first and then dropped, the profits of ordinary retailers rose gradually, the profits of suppliers gradually decreased, the profit of supply chain declined gradually, the consumer surplus went up first and then decreased, and the total social welfare Gradually decline. The numerical example is used to verify the conclusion. Finally, specific recommendations are given to governments, supply chain companies and non-governmental organizations.