| 摘要: |
| 在风景园林学科中，河流沿岸规划设计常较少考虑河道景观长时空维度下的演化过程，而对演化规律的认知能够使设计方案更具科学性。以英国塞文河凯尔苏斯河段流域为例，以综合元胞自动机模型及流体动力学模型的CAESAR-Lisflood平台为依托，进行弯曲型河流河道景观长时空维度上的演化预测、洪泛区洪水多情境变化分析及生态防洪措施治理数值模拟。研究发现凯尔苏斯村庄流域汇水量大，河流搬运能力强，河床随时间变化逐步抬高，易发生洪水灾害及河流改道现象，村庄处于高洪水风险中，设置丁坝的防洪综合效益最好。首次将CAESAR-Lisflood模型运用到风景园林学科，对于河道景观演化的模拟研究，创新性地提出能够使防洪措施更精确可控的设置，为规划方案的设置与比选提供新思路，以此指导河流沿岸绿地空间景观规划。 |
| 关键词: 风景园林 弯曲型河流 河流景观演化 数值模拟 CAESAR-Lisflood 洪泛区治理 |
| DOI：10.14085/j.fjyl.2021.02.0076.07 |
| 分类号:TU986 |
| 基金项目:国家重点研发计划（编号 2019YFD1100405） |
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| Evolution of Curved River Landscape and Flood Plain Management Based on CAESAR-Lisflood: A Case Study of the Severn River in the UK |
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ZHAO Tianyi, CHENG Yuning
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Southeast University
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| Abstract: |
| In the landscape architecture discipline, the evolution process of river landscape in long time and space is seldom considered in riverside planning and design. The cognition of the evolution rules can make the design schemes more scientific. This research takes the Caersws reach of the Severn River in the UK as an example. Based on the CAESAR-Lisflood platform with a comprehensive cellular automata model and fluid dynamics model, it carries out the evolution prediction on the spatial and temporal dimensions of the curved river channel landscape, the analysis of the multi-scenario changes of floods in the flooded areas, and the numerical simulation of the ecological flood control measures. It has been found that the village basin in Caersws has a large water inflow and strong river transport capacity, which gradually elevated the riverbed over time, and is prone to flood disaster and river diversion. The village is at high flood risk, and the comprehensive flood control benefit of setting spur dikes is the best option. This research first introduces the CAESAR-Lisflood model into the application of the landscape architecture, and creatively proposes that the simulation study of river landscape evolution could make the setting of flood control measures more accurate and controllable, and provides new ideas for the setting and comparison of the planning schemes, so as to guide the landscape planning of green space along the river. |
| Key words: landscape architecture curved river river landscape evolution numerical simulation CAESARLisflood flood plain management |
