| 摘要: |
| 沙坝—潟湖是一类持续处于动态平衡调整过程中的地貌系统，具有河口典型的生态系统和重要的科研价值。文章从物源供给特征、外部干扰特征和沙坝—潟湖系统结构特征3个方面考虑，构建了沙坝—潟湖系统稳定性评价指标模型，用于评估浮渡河河口沙坝—潟湖稳定性。结果表明：2001—2012年沙坝—潟湖稳定性明显下降，河口筑坝、围海养殖等海岸开发活动强度的增加是引起稳定性下降的主要原因。在人类干扰活动较小的阶段，沙坝—潟湖稳定性会逐步调整并趋于动态平衡，但很难恢复原始稳定状态。沙坝－潟湖海岸是海岸整治修复的重要对象，采用量化指数方法识别沙坝－潟湖海岸演化趋势，可进一步增强海岸整治修复对策合理性。 |
| 关键词: 沙坝 潟湖 浮渡河 稳定性 整治修复 |
| DOI：10.20016/j.cnki.hykfygl.2022.11.006 |
| 投稿时间：2022-03-07修订日期：2022-09-27 |
| 基金项目:国家海洋环境监测中心博士启动基金“多类型人类活动影响下河口沙坝-潟湖动力地貌系统的受损机制与恢复能力研究”（2018-A-18）. |
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| Study on the Stability Evaluation of Sand Bar-lagoon Geomorphology System in Fudu River Estuary |
| ZHANG Pan,YAN Jishun,WANG Peng,ZHANG Lianjie,ZHAO Bo,LIN Xia |
| National Marine Environmental Monitoring Center;State Environmental Protection Key Laboratory of Marine Ecosystem Restoration;Marine Academy of Zhejiang Province |
| Abstract: |
| Sand bar-lagoon is a kind of geomorphic system which is in the process of dynamic equilibrium adjustment. It has typical estuarine ecosystem and important scientific research value. This paper constructed the stability evaluation index model of sandbar-lagoon system from three aspects: the supply characteristics of material sources, the external interference characteristics and the structural characteristics of sandbar-lagoon system, which was used to evaluate the stability of sandbar-lagoon system in Fudu estuary. The results showed that the stability of sand bar-lagoon decreased significantly from 2001 to 2012, and the increase in the intensity of coastal development activities such as dam construction and coastal aquaculture was the main reason for the decline in stability. In the stage of small human disturbance, the stability of sand bar-lagoon gradually adjusted and tended to dynamic equilibrium, but it was difficult to restore the original stable state. The sandbar-lagoon coast was an important object of coastal remediation. The quantitative index method was used to identify the evolution trend of sandbar-lagoon coast, which could further enhance the rationality of coastal remediation countermeasures. |
| Key words: Sand bar, Lgoon, Fudu River,Stability, Renovation |
