城市发展与河网演变间的相互作用——以郑州市主城区为例
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P333;P292

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河南省城乡绿地资源调控与景观生态设计学科创新引智基地项目(GXJD006)


Interaction Between Urban Development and River Network Evolution—A Case Study in Main Urban Area of Zhengzhou City
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    摘要:

    [目的] 对河南省郑州市主城区城市发展与河网演变间的相互作用进行分析,为合理调节城市水资源提供科学依据。[方法] 以郑州市主城区为研究对象,基于1994,2002,2009和2019年遥感影像数据,计算河网特征指数并建立耦合协调模型,定量分析河网演变及其与城市发展间的相互作用关系。[结果] 城市发展与河网演变间的相互影响表现在城市发展对河网的破坏与促进作用和河网对城市发展的支撑与约束作用。城市发展导致河网密度降低,走向单一,结构简化,但河网是城市形态的骨架并提供物质基础,当河网承受能力趋于阈值时会反向约束城市发展,进而引起对河网的修复。郑州市主城区城市发展与河网耦合协调度变化可分为波动、磨合和稳发展3个阶段:初期城市的高强度发展使两者协调度迅速下降;中期开始注重河网的修护,人工水系的建设巩固了河网结构,期间受地形影响,城区主体避开西南丘陵地区向东部平原地区扩展;后期水系的治理与修复成效显著,协调度提升到初级协调等级并有逐步提升趋势。[结论] 人工水利措施的干预可缓解城市发展对河网的影响,但河网的修复成效落后于城市发展进程,仍需加强对河网的修复与保护。

    Abstract:

    [Objective] The interaction between urban development and river network evolution in the main urban area of Zhengzhou City, He'nan Province was analyzed in order to provide scientific basis for rational regulation of urban water resources.[Methods] Taking the main urban area of Zhengzhou City as the research area, based on remote sensing image data in 1994, 2002, 2009 and 2019, the characteristic index of river network was calculated and the coupling coordination model was established to quantitatively analyze the evolution of river network and the interaction between river network and urban development.[Results] The interaction between urban development and river network evolution was manifested in the destruction and promotion of urban development on river network and the supporting and restricting functions of river network on urban development. Urban development led to the decrease of river network density, the single linear trend and simplified structure, but river network was the skeleton of urban form and material basis. When the bearing capacity of river network tended to the threshold, the urban development would be restrained in reverse, which caused the attention to the river network restoration. The change of coordination degree between urban development and river network could be divided into three stages:fluctuation, running-in and stable development:in the early stage, the high intensity development of the city made the coordination degree of the two decline rapidly. In the middle period, people began to pay attention to the repair and maintenance of river network, and the construction of artificial water system consolidated the structure of river network. Affected by the topography, the main urban areas avoided the southwest hilly areas to the east plain area expansion. In the later stage, the control and restoration of the water system achieved remarkable results, and the coordination degree was upgraded to the primary coordination level with the trend of gradual improvement.[Conclusion] The intervention of artificial water conservancy measures can alleviate the impact of urban development on river network, but the restoration effect of river network lags behind the process of urban development, therefor, it is still necessary to strengthen the restoration and protection of river network.

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罗英菡,刘畅,田国行.城市发展与河网演变间的相互作用——以郑州市主城区为例[J].水土保持通报,2021,41(2):258-266

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  • 收稿日期:2020-11-17
  • 最后修改日期:2021-01-06
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  • 在线发布日期: 2021-05-21
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