Abstract: The digital and green transitions are key drivers of the new wave of global technological, energy, and industrial revolutions. In recent years, the Chinese government has emphasized the coordinated development of digital and green technologies. Promoting their convergence is a significant challenge for countries aiming to advance twin transitions in the two areas. As technological issues become more complex and interconnected, technology convergence is emerging as a major feature of contemporary technological development. Compared to other converging technologies, digital green technologies exhibit stronger knowledge spillovers and environmental benefits, highlighting importance of effective policy incentives. Additionally, digital technology, a general-purpose technology, and green technology, specific-contextual technology, differ significantly in their development mechanisms. This necessitates precise policy measures to understand and facilitate their convergence. Effective convergence of digital green technologies requires attention to the impacts of technological accumulation and cross-domain policy coordination. This study uses the convergence of digital green technology in China as a case study, hypothesizing that technological accumulation and policy coordination are the core factors influencing technology convergence. Provincial policy texts in China are coded to construct a Policy Coordination Index from the dimensions of content coordination and departmental coordination. The study measure the degree of digital green technology convergence through co-IPC codes of the two technical fields. A provincial panel dataset is constructed, and a Poisson fixed-effect model is used to reveal the influence of technological accumulation and policy coordination on technology convergence. Results indicate that policy coordination positively affects technology convergence. Interestingly, green technological accumulation, rather than digital technology, emerges as a key driver, emphasizing the importance of contextual knowledge in the convergence process. Policy coordination also plays a constructive moderating role in the relationship between green technological accumulation and technology convergence. These findings offer new perspectives and empirical evidence on policy coordination in understanding technology convergence and provide valuable policy insights for optimizing digital green technology convergence in China. Based on the conclusions, this study offers the following policy suggestions. The impact of technological accumulation on technology convergence varies by technical fields. It is essential to understand the characteristics and driving forces of different technologies. The government should exert efforts from both content and departmental coordination, highlighting the convergence between different technical fields in policy texts and encouraging more departments to promote the integration of digital and green technologies. This study contributes to the existing literature in three main ways. First, it highlights the significant driving role of policy coordination in technology convergence by constructing an explanatory framework of technological accumulation and policy coordination, providing a new analytical perspective on the mechanisms of technological convergence. Second, it expands the analysis of technological accumulation in technology convergence by focusing on technology types. It shows that green technology that is specific to a certain context plays a more crucial role compared to general-purpose digital technology in advancing technology convergence. Finally, it measures content coordination in policy coordination by using the position and word volume related to cross-domain technologies, thereby more effectively measuring the degree of policy content coordination.

摘要： 数字化和绿色化转型正在成为全球发展的双重驱动力，研究数字绿色技术融合机制具有重要理论和现实意义。本研究基于数字绿色技术融合特征，研究技术积累和政策协同对技术融合的影响。依托中国5207条省级政策文本，从内容协同和部门协同两个维度构建政策协同指数，并基于专利数据构建中国省级数字绿色技术融合数据集，利用泊松固定效应模型揭示技术积累与政策协同对技术融合的作用机制。研究发现，政策协同与技术融合显著正相关，验证了政策协同对于技术融合的重要作用；同时绿色技术积累而非数字技术积累是推动技术融合的关键因素，这表明在技术融合过程中场景技术比通用技术更为关键；此外，政策协同在绿色技术积累与技术融合之间起到了显著的正向调节作用。本研究结果不仅为理解和指导技术融合的发展提供了政策协同的新视角和实证经验，也为我国制定和优化数字绿色技术协同提供了政策启示。