This article conducts a comprehensive discussion on the composition,evolution characteristics and dynamic changes of policy combinations of China's rare earth supply security policy and analyzes the mechanism of action of the policy.Eeconometric models(Organization Logistic Specific Access,Syn-thetic Control Method,Difference-in-Difference,Difference-in-Difference-in-Difference)is used to eval-uate the implementation effects of China's rare earth industry policy,export trade control policy,and resource tax policy.The conclusions are as follows:(1)The implementation of rare earth industry poli-cies has basically suppressed the overcapacity situation of rare earth;(2)Rare earth export trade control policies inhibit rare earth exports while promote export earnings;(3)The resource tax ad valorem re-form has a positive and significant impact on rare earth export prices,and the impact on upstream prod-ucts is more obvious;(4)Compared with the single implementation of resource tax policy,the com-bined implementation effect of total mining volume control policy and resource tax is not obvious.It is recommended to further improve rare earth supply security capabilities by expanding overseas mining rights and optimizing layout technology research and development.
Digital transformation can improve the operational efficiency and financial performance of en-terprises,but the mechanism of its effect on corporate sustainable development remains to be ex-plored.Using a double fixed-effects model and data from listed companies,this paper finds that digital transformation can significantly improve the level of corporate environmental,social and govern-ance.This finding still holds after a series of robustness and endogeneity tests.Mechanistic tests show that digital transformation contributes to ESG performance by promoting green innovation,internal in-formation transparency and investor attention.However,the effectiveness of digital transformation is affected by the level of economic development of the region in which the firm is located,the degree of marketization and its own pollution,the level of science and technology strength,the management's green perception and green experience.The results of the study expand the application value of enterprise digital transformation,provide solution ideas for enterprise sustainable development.
Green credit policy is an important practical means to achieve the dual goals of optimal alloca-tion of resources and green development.Taking the Guidance on Building a Green Financial System is-sued in 2016 as a quasi-natural experiment of green credit policy,this paper takes A-share listed compa-nies in Shanghai and Shenzhen from 2011 to 2020 as samples,and uses the double difference model and triple difference model to prove the differential impact of green credit policy on enterprise total factor productivity.The results show that the implementation of green credit policy has a negative impact on the total factor productivity of high pollution,high energy consumption and overcapacity enterpri-ses.Mechanism analysis shows that green credit policy inhibits the productivity level of the above men-tioned enterprises through factor substitution effect,credit constraint effect and differentiated choice of green technology innovation mode.Heterogeneity analysis shows that state-owned enterprises and small and medium-sized enterprises are more affected by the negative impact of the policy than private enterpri-ses and large enterprises,and the green credit policy has a greater negative impact on enterprises with low productivity.
Under the empowerment of mobile space,capital power has infiltrated people's daily lives,creating a new type of control method called"time hunt",which covertly manipulates the legalization of people's leisure time.In this regard,rethinking the relationship between time and space should become an important task for contemporary academia.Based on the discussion of the relationship between time,space,and power,a study was conducted on the"read"devices in the Ding Talk work group.It was found that under the spatial changes of recombination,alienation,and confinement,"read"serves as a real-time monitoring device,countdown button,and temporary station,assisting capital in implemen-ting three hunting techniques:covert domestication,reverse timing,and transfer exploitation;Fur-thermore,people's self time will fall into a pathological state of degradation,acceleration,and stran-ding.Finally,comparison of social groups like WeChat and QQ further indicated that with the support of"read",capital time hunt has advanced from version 1.0 to version 2.0.
At present,China's carbon market has been fully launched,but the main trading entities are key emission enterprises.Personal carbon trading has a good foundation for implementation in Chi-na.Under the cap and trade principle,personal carbon trading could promote the optimal allocation of carbon market resources,stimulate market vitality,and boost China to prove the commitment of na-tional determined contributions(NDCs).Practice has proved that individuals could accumulate tradable carbon emissions through carbon sinks.Carbon emission right has the attribute of both public and private rights.Through the perspective of the genealogy of property rights,its quasi-property right attribute is gradually clear,and the attributes of its environmental rights and development rights imply that individ-uals and communities could all serve as rights subjects.The drawbacks of the relevant systems under the framework of UNFCCC are gradually exposed.In order to integrate the international carbon market and adapt to the development of the domestic carbon market,China should enact supporting laws as soon as possible.
