This paper incorporates industrial agglomeration, green technical innovation and green economic efficiency to study the impact of new energy vehicle industrial agglomeration on green economic efficiency in Yangtze River economic zone, aiming at offering references for China to reach strategic objectives of manufacturing power and to develop new energy vehicles in Yangtze River economic zone under the dual-carbon settings. This paper, based on 11 provinces/cities’ 2012 to 2020 panel data along Yangtze River economic zone, uses super-efficiency SBM and locality entropy to establish a measuring model, which is employed to study impacts of new energy vehicle industrial agglomeration on green economic efficiency. And discusses mediating effects of green technical innovation. The spatial overflowing effects and regional heterogeneity of new-energy vehicle industrial agglomeration on green economic efficiency also were analyzed. The entire Yangtze River economic zone has become a zoned new energy vehicle industrial agglomeration area, with its agglomerating level fluctuating up over years, and increasing from down- to upper-stream with growing variance. New energy vehicle industrial agglomeration promotes the green economic efficiency in Yangtze River economic zone through consolidating internal network resources and boosting external entire capabilities. Development of industrial agglomeration promotes green technical innovation through competition and cooperation, and development of green technical innovation can also boost economic drives and efficiency, proving its mediation between industrial agglomeration and green economic efficiency. New energy vehicle industrial agglomeration has spatial overflowing on green economic efficiency, varying among upper-, middle- and down-stream. This paper presents suggestions on enhancing industrial clustering construction to play a role in the long-term mechanism of new energy vehicle industry, boosting green technical innovation system and advancing regional heterogeneity of new energy vehicle.

China has a big energy consumption during industrialization, leading to severe environmental pollution, which requires an improving energy use efficiency. This paper, based on “the Belt and Road” provinces/cities ‘ 2010 to 2020 industries, uses intrinsic growth theory and quality development demand to establish a global non-radial directional distance function (GNDDF), which is employed to estimate the industrial energy environmental efficiency along “the Belt and Road” provinces/cities. Tobit model is applied to study the inner connection of industrial energy environmental efficiency and local governmental interventions, local governmental economic competition, local governmental preference on innovation and on environmental protection, and to discuss the impacts of governmental behaviors on industrial energy environmental efficiency. Industrial energy environmental efficiency shows a distribution order of “oceanic silk road>average>the silk road economic zone”, and an order of “southeast line>southwest line>northeast line>average>northwest line” on the side lines. Local governmental economic interventions and economic competition adversely affect industrial energy environmental efficiency, but their preference on innovation and environmental protection work positively. When their interventions are decreasing in intensity, the impacts will largely switch from negative to positive, increasingly but not outstandingly. This paper presents suggestions on simplifying governance, empowering, optimizing local governmental functions for increasing industrial energy environmental efficiency.

Aiming at the quality green developing in Yangtze River economic zone, this paper uses water resource element as the core to study the impacts of water resource allocation on green efficiency development, and to clarity the roles of industrial structural adjustment during water resource element impacts green efficiency development. By means of 2003 to 2020 panel data, this paper uses super-efficiency SBM (slack-based measure) to estimate its green development efficiency and studies the impacts of three constraints, gross water resource, water use efficiency and water resource quality on green development efficiency in Yangtze River economic zone, and verifies the mediating effect and interaction of three industrial structural adjustment dimensions with water resource, industrial structural rationalization, sophistication and softening. Water use efficiency in water resource constraints positively plays a major role on its green development efficiency, deceasing from upper- to down-stream. Industrial structural softening plays a mediating role, and industrial structural sophistication also plays a mediating role during gross water resource impacts green development efficiency in the upper-stream. In the down-stream, both water use efficiency and water resource quality play a mediating role amid green development efficiency. In the entire Yangtze River stream an interaction exit among water use efficiency, industrial sophistication and softening, and between water constraint and industrial structural rationalization. Interaction prevails in the down-stream, it also exists between water use efficiency and industrial structural rationalization & softening, and between water constraint and industrial structural rationalization, sophistication & softening.

A coordinated interaction between economy and eco-environment has become a vital topic of social economy. In order to reach high\|quality development of Yangtze river economic zone, this paper uses spatial metering and panel threshold model to study the relation of industrial clustering with water pollution in 11 provinces (cities) in Yangtze river economic zone from 2007 to 2018 Such water environmental pollution has significant spatial autocorrelation. Impacts of industrial clustering on water environmental pollution in Yangtze river economic zone show a U-shaped curve, indicating existence of threshold in industrial pollution over water environmental pollution. Scale effect and structural effect of industrial clustering in Yangtze river economic zone have a striking double threshold effect on water environmental pollution with their exterior characteristics varying with industrial clustering levels, so does technical overflow effect, which will show a strong-to-weak trend on water environmental pollution as industrial clustering level grows.