Emergent plants in river riparian zones (RRZs) are an important part of the river ecosystem, and the evolution of their spatial distribution patterns is a direct indicator of the health of river ecosystems. In previous studies, the simulation of the spatiotemporal pattern evolution process for emergent plants mainly focused on the overall pattern change of emergent plant communities. However, they did not distinguish the types of emergent plants and ignored the differences in response of different emergent plants to environmental changes. The difference in the competitiveness of different emergent plants will affect the distribution of emergent plants. In this research, the transformation rules of five emergent plants under different water levels were determined, and the Cellular Automata model was constructed to dynamically simulate the proliferation of emergent plants in RRZs. The results showed that when the water level was 11.5 m, the total area of emergent plants reached the maximum, and among the five emergent plants, Phragmites australis was the dominant species. When the water level dropped to 12.5 m, the shallow water area in the east of the riverside zone increased, and P. australis expanded rapidly in the east. By dynamically simulating the distribution of emergent plants in RRZs, the distribution status of the emergent plants in RRZs in the future can be obtained. It is of great significance for biodiversity conservation and resource management in riparian zones.

中文翻译：

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河岸带多种挺水植物分布格局模拟

河流沿岸带（RRZs）的新兴植物是河流生态系统的重要组成部分，其空间分布格局的演变是河流生态系统健康状况的直接指标。在以往的研究中，对挺水植物时空格局演化过程的模拟主要集中在挺水植物群落的整体格局变化上。然而，他们没有区分挺水植物的类型，忽略了不同挺水植物对环境变化响应的差异。不同挺水植物竞争力的差异会影响挺水植物的分布。本研究确定了5种挺水植物在不同水位下的转化规律，并构建元胞自动机模型以动态模拟RRZ中挺水植物的增殖。结果表明，当水位为 11.5 m 时，挺水植物总面积最大，在 5 种挺水植物中，芦苇是优势种。当水位下降到12.5 m时，滨江带以东浅水区面积增加，P. australis向东快速扩张。通过动态模拟RRZs内挺水植物的分布情况，可以得到未来RRZs内挺水植物的分布状况。对河岸带生物多样性保护和资源管理具有重要意义。