Since the ecological protection and high-quality development of the Yellow River Basin (YRB) in China have become a primary national strategy, the low-carbon economy is crucial. To formulate effective emission mitigation policies for the YRB, we need to comprehensively understand the characteristics of the spatial agglomeration of the carbon emissions intensity in the YRB and its regional heterogeneity. Therefore, based on the relevant data from 2005 to 2017, we first scientifically measure the carbon emissions intensity of 57 cities along the YRB. Then, we analyze the spatial agglomeration characteristics and long-term transfer trends of carbon emission intensity using exploratory spatial data analysis methods and Markov chains. Finally, the Dagum Gini coefficient and the variation coefficient method are used to study the regional differences and differential evolution convergence of the carbon emissions intensity in the YRB. The results show that the carbon emissions intensity of the YRB has dropped significantly with the spatial distribution characteristics “high in the west and low in the east”, and there is a significant spatial autocorrelation phenomenon. In addition, the probability of a shift in urban carbon intensity is low, leading to a “club convergence” and a “Matthew effect” in general and across regions. Inter-regional differences have always been the primary source of spatial differences in carbon emissions intensity in the YRB, and the intra-regional differences in carbon emissions intensity in the lower YRB show a significant convergence phenomenon. The research results may provide a reference for the regional coordinated development of a low-carbon economy in the YRB, and serve to guide the win-win development model of ecological environment protection and economic growth in the YRB.
The Paris Agreement marks global response to climate change after 2020 and China has proposed the dual carbon goals, carbon peaking and carbon neutrality, in response. This paper analyses the contribution to dual carbon goals by analyzing the impact of environmental regulations (ERs) on green technology innovation (GTI) in China. First, considering variances in energy consumption structure across provinces and industries, industrial CO2 emission is calculated and set as an undesirable output of industrial GTI. Then, industrial green technology innovation efficiencies (GTIE) of 29 provinces in China between 2005–2017 are calculated using a non-oriented two-stage network SBM-DEA model assuming variable returns to scale. Last, dynamic evolution and regional differences of industrial GTIE during green technology R&D, green technology commercialization, and overall GTI stages are respectively observed, and the influences from different types of ERs, command-based (CER), market-based (MER), and voluntary (VER), on industrial GTIE are analyzed. We identify China is overall experiencing relatively low but gradually increasing industrial GTIE and Industrial GTIE present gradient changes across provinces with increasingly prominent regional difference. It is found that influences of types of ERs on industrial GTIE present dynamic effect, threshold effect, lag effect and regional differences.
Entrepreneurship is the sustainable driving force and stable source of economic development, and it is an important guarantee for the continuous improvement of export product quality and high-quality economic development. This paper selects entrepreneurship and export product quality as research objects. It measures the export product quality at the enterprise level using data from the China Industrial Enterprise Database and the China Customs Import and Export Trade Database. Furthermore, based on matching entrepreneurship at the macro-level and the export product quality at the micro-level, the impact and mechanism of entrepreneurship on the export product quality are empirically examined. It was found that entrepreneurial innovation and entrepreneurship further significantly contribute to the improvement of export product quality by promoting the total factor productivity of enterprises. Entrepreneurial innovation and entrepreneurship do not significantly contribute to the export product quality of state-owned and collective enterprises, while they significantly contribute to privately-owned, independent legal entities, Hong Kong–Macao–Taiwan, and foreign-funded enterprises. Furthermore, the promoting effect on privately-owned and independent enterprises is greater than that on Hong Kong–Macao–Taiwan and foreign-funded enterprises. Further analysis shows that improving the rule of law, reducing excessive government intervention, and improving the market mechanism for products and production factors, as well as vigorously developing the non-state-owned economy, will all be conducive to the cultivation and development of entrepreneurs and better promotion of the improvement of export product quality.
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