Unimpeded domestic inter-regional trade is an inevitable choice for a country to improve its economic development autonomy and internal stability. The booming development of the digital economy profoundly affects inter-regional trade exchanges and the construction of domestic trade patterns. Based on China’s inter-provincial panel data, this study analyzes the mechanism channels and regional heterogeneity of the digital economy’s impact on inter-regional trade. We found that firstly, the digital economy significantly promotes inter-regional trade outflows and inflows with positive spatial spillover effects. Secondly, the digital economy promotes inter-regional trade by reducing trade costs and stimulating market demand, while the role of the resource allocation effect and technological innovation effect needs to be enhanced. Thirdly, the promotion of inter-regional trade by the digital economy is more prominent and has the potential for less developed regions or non-border regions. In addition, the digital economy significantly boosts inter-regional trade in labor-intensive regions, while it has a limited effect on inter-regional trade in technology-intensive regions. Therefore, this study suggests increasing the construction of digital infrastructure in less developed regions, tapping the role of the digital economy in resource allocation, and promoting the in-depth integration of the digital economy with the region’s advantageous industries, so as to promote inter-regional trade and economic development.

The purpose of the dual-credit policy is to promote the healthy and sustainable development of China’s new energy vehicle industry. This study took the dual-credit policy as the background, took the new energy vehicle listed companies in the Shanghai and Shenzhen stock markets in China as the research object, and used the difference-in-difference model to verify the impact of the dual-credit policy on the performance of new energy vehicle companies and identify the mechanism behind its role. The study found the following: (1) the dual-credit policy significantly improves the performance of listed new energy vehicle companies, but the marginal utility of the policy will diminish; (2) the impact of the dual-credit policy on the performance of domestic listed new energy vehicle companies is better than that of joint venture listed new energy vehicle companies; (3) the dual-credit policy mainly enhances the competitiveness of listed new energy vehicle companies through the market expectation of enterprises and market competition mechanism; (4) there is heterogeneity in the mechanism of the dual-credit policy for domestic and joint venture new energy vehicles. The research in this paper is helpful for evaluating the economic effect of the dual-credit policy, and it has implications for the healthy and orderly development of the new energy vehicle industry.

Greenhouse gas emissions are influenced by the technologies that farmers use in their agricultural production. Therefore, the purpose of this study is to find out the influencing factors for cotton farmers to adopt low-carbon technology. First of all, this study surveyed the progress of cotton farmers in Xinjiang and finally obtained 383 valid questionnaires. And then, a logistic model was used to analyze the influence on the adoption of key low-carbon technologies in the cotton cultivation process, combined with the theory of planned behavior. The results show that drip irrigation, soil testing, farmyard fertilizer, biodegradable film, and intercropping have different effects on farmers’ adoption of low-carbon technologies. Meanwhile, the attitude had no significant effect on cotton farmers’ adoption of low-carbon technology, while perceived behavior control and subjective norms had a significant effect on cotton farmers' adoption of low-carbon behavior. In the end, Suggestions are made from the following points. The government can improve farmers' awareness of low-carbon technologies by raising the level of education and expanding the publicity of agricultural low-carbon technologies. Businesses should be encouraged to provide farmers with free information on low-carbon technologies, so that cotton farmers can better understand agricultural low-carbon technologies. At the same time, to increase the enthusiasm of farmers to participate in training and income, farmers should be encouraged to participate in cooperatives. These initiatives will help the government to further promote low-carbon technologies.