摘要：

目的 验证科技期刊开放获取出版改革与技术影响力的关系，为促进进一步理解科研成果的转化机制、打通科学-技术衔接通道以及优化科技期刊出版改革提供启示。方法 以农业领域322种期刊1991—2023年面板数据为基础，采用双向固定效应模型与多期双重差分方法，从期刊开放获取水平和完全开放获取实施2个层面评估开放获取对期刊技术影响力的影响。结果 期刊的开放获取水平提高显著提升了其技术影响力，完全开放获取的实施作为期刊出版的一项重要变革措施，对期刊技术影响力的提升具有明确的因果作用。结论 期刊层面的开放获取出版改革不仅是提升知识可达性的实践路径，更是重塑知识传播结构、促进科研成果社会转化的制度手段。从因果识别视角拓展了开放获取的知识转化功能认知，也为科技期刊的功能再定位与科技出版政策优化提供了理论依据与实证支撑。

关键词: 开放获取, 技术影响力, 知识转化, 科学技术关联

Abstract:

Purposes This study investigates the impact of open access （OA） publishing reform on the technological influence of scientific journals. It aims to shed light on the mechanisms underlying research knowledge translation， bridge the gap between science and technology， and inform the optimization of OA publishing policies for scientific journals. Methods Based on panel data from 322 agricultural journals between 1991 and 2023， this study employs a two-way fixed effects model and a staggered difference-in-differences （DID） approach to evaluate the effects of OA on journals’ technological influence. The analysis focuses on two dimensions： the overall level of OA adoption and the institutional shift to full OA publishing. Findings An increase in a journal’s OA level significantly enhances its technological influence. Moreover， the implementation of full OA reform has a clear causal effect on improving journals’ influence within technological systems. Conclusions OA publishing reform at the journal level is not merely a strategy to enhance accessibility； it also serves as an institutional mechanism to restructure knowledge dissemination and promote the societal application of scientific research. By adopting a causal inference perspective， this study expands the understanding of OA’s role in knowledge translation and provides both theoretical and empirical insights for the repositioning of agricultural science journals and the development of science publishing policies.

Key words: Open access, Technological impact, Knowledge transformation, Science-technology linkage