绿色债券发行对股价崩盘风险的影响研究

【作者】 周杰；

【导师】 熊晓炼；

【作者基本信息】 贵州大学 ， 金融， 2025， 硕士

【摘要】 随着全球气候问题日趋严重,可持续发展的观念逐渐深入人心,各国陆续推出“双碳”战略以应对生态环境的挑战。中国早在2020年就提出了“2030年前碳达峰、2060年前碳中和”的目标,并且配套出台了一系列政策,用以健全绿色金融体系。在这样的背景之下,企业在谋求经济效益的同时,还必须承担起减排义务,从而带动所在行业以及整个社会逐步迈向低碳和绿色化的路径。绿色债券作为支持绿色产业发展的关键金融手段,不仅有助于企业改善融资条件,也在维护股票市场稳定方面发挥着积极作用。本研究选取了2012年至2022年A股中1105家非金融类上市公司的面板数据,构建多期双重差分模型(DID),对绿色债券发行与股价崩盘风险之间的影响路径进行了系统分析。为提升结论的稳健性,研究引入平行趋势检验、安慰剂检验以及倾向得分匹配(PSM-DID)等方法进行验证。之后进一步从环境信息披露质量与融资约束两个层面,分析发行绿色债券抑制股价崩盘风险的内在机制,并从企业产权属性、行业类型以及是否具备第三方绿色认证三个角度展开异质性研究。研究发现:(1)绿色债券的发行能够有效减少企业股价大幅下跌的风险;(2)作用机制主要体现在两个方面,其一是企业通过提升环境信息披露的质量,使得透明度提高并增强了投资者的信任,从而缓解代理冲突;其二是融资状况得到改善,使企业获得长期、稳定且成本较低的资金来源,进而调整资本结构并增强应对风险的能力;(3)异质性分析显示,该影响在国有企业、获得第三方绿色认证的企业以及高污染企业中更显著。结合实证研究结论,本文提出以下五项政策建议:其一,监管部门应积极推动企业参与绿色债券市场,提升市场覆盖面与主体多样性;其二,在监管执行过程中,应确保对不同类型市场主体实行公平监管,构建规范、公平、有序的市场竞争环境;其三,相关机构应加强对绿色投资者的引导和培养,促进其形成科学理性、长期导向的投资理念;其四,信息披露制度应在统一基础上进一步加强,完善信息传递机制,以此带动绿色债券市场实现良性发展;其五,有必要推动构建统一且标准化的绿色认证体系,并鼓励独立第三方机构不断优化认证流程和提升认证标准。更多还原

【Abstract】 As global climate challenges intensify and the concept of sustainable development gains widespread acceptance,nations have introduced“dual carbon”strategies to address environmental pressures.China announced its goal to peak carbon emissions by 2030 and achieve carbon neutrality by 2060 in 2020,alongside a series of measures to strengthen its green finance framework.Under these objectives,firms must balance economic growth with emission reduction responsibilities,guiding their industries and society towards low?carbon,green pathways.Green bonds,as a cornerstone of green finance,provide critical funding for sustainable investments and help stabilize capital markets.Since China launched its green bond market in 2016,issuance has expanded rapidly,reaching RMB 3.3trillion in labeled bonds by 2022—domestic volume alone grew over 40%year?on?year.This study examines the impact of green bond issuance on stock price crash risk using panel data from 1,105 non?financial A?share firms between 2012 and 2022.Employing a multi?period difference?in?differences model and verifying robustness through parallel?trend,placebo,and PSM?DID tests,we explore two transmission channels—information asymmetry mitigation and financing constraint relief—and conduct heterogeneity analyses across ownership types,industry categories,and the presence of third?party certification.Our findings indicate that green bond issuance significantly reduces crash risk by:(1)enhancing environmental information disclosure quality,boosting transparency and investor confidence to alleviate agency conflicts;and(2)improving financing conditions through long?term,stable,low?cost capital,which optimizes capital structures and strengthens firms’risk resilience.The risk?mitigation effect is notably stronger for state?owned enterprises,firms in heavily polluting industries,and those with third?party green certification.These results offer important theoretical and practical insights.Policymakers should expand market participation,ensure fair regulation across firm types,cultivate green investors’expertise,standardize and enhance disclosure practices,and develop a unified,rigorous certification system to support the continued growth and stability of China’s green bond market.更多还原