Environmental regulation, technology density, and green technology innovation efficiency

• DOI: 10.1016/j.heliyon.2023.e23809
• Publication Date: 2023-12-17T15:16:37Z
• Authors: Pengzhen Liu; Tao Huang; Yueting Shao; Bin Jia
• Keywords: H1-99; Environmental regulation; Science (General); 02 engineering and technology; Green technology innovation efficiency; Technical density; Social sciences (General); Q1-390; Innovation value chain; 0202 electrical engineering, electronic engineering, information engineering; Threshold model; Research Article

From the perspective of innovation value chain, this study divides efficiency green technology into two stages: R&D and achievement transformation efficiency. Technology density is introduced as a threshold variable to examine influence environmental regulation on at both stages. The findings reveal that China's overall (GTIE) improving. initially declined, then increased, while experienced three-stage pattern: rise-fall-rise. GTIE distribution across stages progressively increases from northwest southeast, resulting in concentrated, contiguous "line-shaped" "block-shaped" pattern. High-efficiency areas are primarily found eastern coastal regions. Nationally, Environmental share an inverted U-shaped relationship, with double effect density. does not significantly affect efficiency, but there single due