Objective The coupling coordination relationship between urbanization and ecosystem service value in the Lanzhou-Xining urban agglomeration was investigated in order to provide an empirical basis for regional synergistic development. Methods The Lanzhou-Xining urban agglomeration was selected as the study area. The comprehensive urbanization level was measured using the entropy weight-TOPSIS method, ecosystem service values were calculated using the equivalent factor method, and the coupling degree, coordination degree, and coupling coordination degree were analyzed using a coupling coordination model. Results ① The comprehensive urbanization level increased from 0.120 7 in 2015 to 0.914 6 in 2024, with economic and spatial urbanization identified as the most prominent driving factors. ② The total ecosystem service value showed an “increase-decrease” trend, peaking at 2.97×1011 yuan in 2022 and declining to 2.70×10¹¹ yuan in 2024. Regulation services consistently accounted for the highest proportion, while cultural services increased from 7.66×10⁹ yuan to 1.00×10¹⁰ yuan. ③ The coupling coordination degree (D-value) evolved from “moderate disorder” to “barely coupling” and then to “quality coupling”. Although it declined to 0.931 2 in 2024, it remained at the quality coupling level, following an overall trajectory of “disorder-coupling-quality coupling”. Conclusion The coupling coordination relationship between urbanization and ecosystem service value exhibits distinct stages during the study period, transitioning from disorder to quality coupling overall. However, fluctuations in coordination are influenced by imbalanced development across urbanization dimensions and dynamic changes in ecosystem service value structure. In the future, emphasis should be placed on promoting balanced development across all urbanization dimensions and strengthening the conservation of ecosystem provision and support services to support sustainable development in the Lanzhou-Xining urban agglomeration.
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式中:ESV为研究区生态系统服务总价值;t为生态系统服务功能类型的总数;z为生态系统类型的总数; x为生态系统服务功能类型;y为生态系统类型;exy 为第y种生态系统的第x种生态服务功能相对于农田生态系统提供生态服务单价的当量因子; Ea 为单位面积农田生态系统提供食物生产服务功能的经济价值(元); Ay 为第y类生态系统面积(hm2)。
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