| 摘要: |
| 在流空间重塑海洋经济空间组织的背景下，识别沿海城市海洋经济功能的演化特征及网络 驱动机理至关重要。文章利用 2017 年与 2022 年中国沿海城市海洋经济多元流数据， 通过引入网络效率因子改进外向服务功能测度模型，划分等级梯队与要素主导类型，并构建回归模型探讨网络嵌入对中国沿海城市海洋经济外向服务功能的影响机理。研究发现：（1）沿海城市外向服务能级呈显著的“金字塔型”梯队格局，核心城市多表现为复合要素主导型，而中低能级城市依赖单一要素；（2）网络嵌入程度是驱动功能提升的核心变量；（3）网络结构优势引发“功能外溢与中转损耗”效应，对沿海枢纽城市外向服务功能的提升产生抑制作用；（4）异质性分析发现网络嵌入对低层级城市的促进效应显著优于高层级城市，融入网络是边缘城市实现功能突破的关键 路径。 |
| 关键词: 海洋经济 流空间 外向服务功能 网络嵌入 层级异质性 |
| DOI：10.20016/j.cnki.hykfygl.2026.04.014 |
| 投稿时间：2026-02-15修订日期：2026-04-20 |
| 基金项目:教育部人文社科重点研究基地重大项目“区域海洋经济高质量发展的资源与要素配置效率及网络优化研究”（22JJD790028）． |
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| Impact of Network Embeddedness on the Outward Service Functions of Marine Economy in China’s Coastal Cities |
| GUO Jianke，HAN Weibing，ZHANG Yichuan，LUO Hao，DENG Zhiqing |
| Key Research Base of Humanities and Social Sciences of the Ministry of Education，Institute of Marine Sustainable Development，Liaoning Normal University;School of Geography，Liaoning Normal
University |
| Abstract: |
| Under the background of the“space of flows”reshaping the spatial organization of the marine economy，it is crucial to identify the evolutionary characteristics and network-driven mechanisms of coastal city functions．Utilizing multi-dimensional flow data of the marine economy from Chinese coastal cities in 2017 and 2022，this study improves the outward service function measurement model by introducing a network efficiency factor．It classifies hierarchical echelons and factor-dominant types，and constructs a regression model to explore the influence mechanisms of network embeddedness on the outward service functions of China’s coastal cities．The findings indicate that：（1）The outward service energy levels of coastal cities exhibit a significant“pyramid-shaped”echelon pattern；core cities are mostly characterized as multi-factor-driven，while middle-and-low-level cities rely on single factors．（2）Network embeddedness is the core variable driving functional improvement．（3）Structural advantage in the network triggers a“functional spillover and transfer loss”effect，exerting a negative impact on the functional enhancement of coastal hub cities．（4）Heterogeneity analysis reveals that the promotion effect of network embeddedness on lower-level cities is significantly superior to that on higher-level cities；integrating into the network is a key path for peripheral cities to achieve functional breakthroughs. |
| Key words: Marine economy Space of flows Outward service function Network embeddedness Hierarchical heterogeneity |
