Abstract
It has become a significant issue for urban economies to maintain efficient and green development while ensuring security and stability. This study evaluated economic resilience (ER) and green economic efficiency (GEE) in China's five urban agglomerations using the combined weight model and the meta-frontier global super-efficiency SBM model with undesired outputs. Analyzed synergistic degrees between ER and GEE and regional differences by the modified coupled coordination model and Dagum's Gini coefficient. Results indicated that ER overall showed an increase from 2003 to 2021. GEE exhibited a slanting 'W' shaped trend but remained generally upward. In addition, the synergistic degree between ER and GEE increased, indicating beneficial interactions and a trend of synergistic evolution moving towards advancement. Spatial differences in synergistic degree were mainly due to hypervariable density, with inter-regional variations as a secondary factor. The Pearl River Delta (PRD) showed the highest intra-regional variation in synergistic degree and the Chengdu-Chongqing region (CC) the least. The synergistic gap between CC and PRD was the largest, while the gap between CC and the middle reaches of the Yangtze River (MYR) was the smallest. Understanding ER and GEE's spatiotemporal evolution is expected to induce sustainable economic development in urban agglomerations further.
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