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Based on data from 13 cities in the Beijing-Tianjin-Hebei Region from 2015 to 2022, an integrated evaluation system was constructed to assess urban development comprehensively across subsystems such as environmental quality, economic scale, social progress, and scientific and technological innovation. The coupling coordination degree model was then employed to measure the coordination of urban development, while the LMDI(logarithmic mean Didier index)model is used to quantitatively assess the contributions of these subsystems to overall coordination. The research results indicate that from 2015 to 2022, the overall development level of the Beijing-Tianjin-Hebei Urban Agglomeration has shown a steady upward trend, reflecting continued progress in economic, social, and technological aspects across cities in the region. However, significant spatial gradients persist in the development levels among these cities. Core cities like Beijing and Tianjin maintain a leading position in overall development, while cities farther from the core area lag behind, leading to a relatively differentiated development landscape within the region. In addition, the degree of coordination of urban development has improved, but the differences in the coordination of development among various cities are still significant. Among them, scientific and technological innovation is the main driving force for the coordinated development and changes of the Beijing-Tianjin-Hebei Urban Agglomeration, while environmental quality is still a key bottleneck restricting coordinated development and has the lowest contribution to coordinated development and changes. Finally, recommendations for optimizing the coordinated development of cities are proposed, including enhancing the radiative influence of core cities, promoting cross-regional interconnectivity, prioritizing innovation resource allocation, and strengthening cooperation in environmental protection and governance.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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