In the process of promoting the development of a low-carbon economy, green services lag behind the green manufacturing industry. This paper applies the textual analysis method and systematically analyses the evolutionary trends and structural characteristics of green service policies to further optimise the service policy system and strengthen the quality of the green service supply. This paper identifies 859 policies introduced since 1986 and uses the content analysis method to analyse changes in the number of policies, the relationships between policy subjects, the formal types of texts and the composition of policy instruments. The results show that (1) the number and overall effectiveness of green service industry policies promulgated by the central government are increasing, such that the formulation of green service industry policies has passed the exploratory phase and has entered the stage of high-quality development; (2) there is a wide range of obvious interministerial cooperative phenomena, the modes of cooperation are relatively fixed, and the overall intersuperior cooperation has been strengthened but is characterised by phased development; (3) the distribution of policy forms is uneven, with many documents characterised by low effectiveness and a lack of high-efficiency documents; (4) the policy object structure is relatively complete, but the industrial distribution is unbalanced; (5) there is an imbalance among the three policy tools of supply, environment and demand. Those tools that are embodied in the environment are deemed more important than those of supply and demand.

This paper takes the software industry base of national torch plan as the research object, describes its construction process and distribution characteristics for more than 20 years, and uses the cross-sectional data of 2007, 2012 and 2017, Empirically test the impact of software industry base on the service level of manufacturing industry in the region, and further analyze the regulatory effect of regional intellectual property protection intensity. It is found that the overall scale of the national software industry base has expanded steadily in recent 20 years, but the spatial distribution is extremely unbalanced. The software industry base in the eastern region is significantly stronger than that in the central and western regions in terms of base number and base income. The construction and development of software industry base can significantly improve the service level of manufacturing industry in the region. After the robustness test, the conclusion is still valid. The results of regional heterogeneity test show that with the deepening of industrialization, the construction of software industry base plays a more obvious role in improving the service-oriented manufacturing industry in the eastern region. The results of industry heterogeneity test show that the construction of software industry base can more effectively improve the service-oriented level of technology intensive manufacturing industry. The results of regulation effect test show that the strength of local intellectual property protection and strengthening the construction of software industry base have a positive regulation effect on the service level of manufacturing industry.

Based on the data of Shanghai and Shenzhen A-share listed companies from 2015 to 2019, this paper studies the influence paths of air quality on R&D investment of listed companies from the perspectives of investor sentiment and government concern. It is found that, on the whole, air quality has a significant inhibitory effect on R&D investment. Air quality has a significant promoting effect on investor sentiment, which serves as a path to further restrain the R&D investment of listed companies. Air pollution is an effective concern for the government, and serves as a veil between air quality and R&D investment. Furthermore, this paper analyzes the heterogeneity of enterprises from the aspects of regional technology complexity, property right nature, whether it is a polluting enterprise or not, and whether it is a key regulated enterprise or not, and comes to relevant conclusions. This paper expands the research on air quality and enterprise R&D investment decision-making, which helps to clarify and improve the transmission mechanism and implementation effect of environmental protection policies.