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首页> 外文期刊>Open Journal of Ecology >Vegetation Formation in Estuarine Tidal Flats: Influences of Basin Scale and River-Crossing Structures of the Eight Rivers of Ise Bay in Mie and Aichi Prefectures, Japan
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Vegetation Formation in Estuarine Tidal Flats: Influences of Basin Scale and River-Crossing Structures of the Eight Rivers of Ise Bay in Mie and Aichi Prefectures, Japan

机译：河口滩涂中的植被形成：日本三重县和爱知县伊势湾八河流域的盆地规模和过河结构的影响

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摘要

In this study, we examined the influences of the differences in basin scale and river-crossing structures of 8 rivers of Ise Bay in Mie and Aichi Prefectures, Japan on the vegetation in the estuarine tidal flats of these rivers. The dominant plant communities of the estuarine tidal flats formed from rivers of large-scale river basins (exceeding 300 km2) were determined. In the Miya River, the dominant plant community was the Suaeda maritima and Artemisia fukudo community. In the Kushida River, the dominant plant community was composed of Phacelurus latifolius, Artemisia fukudo, Phragmites australis, and bamboo. In the Kumozu River, the dominant community was composed of the coastal plants Calystegia soldanella, Lathyrus japonicus, and Carex pumila and the exotic plant of Lolium multiflorum. The plant community of Suzuka River was dominated by the exotic plant of Eragrostis curvula. Among the estuarine tidal flats influenced by a small-scale river basin (50 km2 or less), the plant community of Shinbori River (Fukue tidal flat) was dominated by Suaeda maritima, and the plant communities of the Shio and Harai Rivers were dominated by Phragmites australis. The plant community of Tanaka River was dominated by Phragmites australis and coastal plants. Regarding the relationship between the vegetation and the river environment for each study site, we hypothesised that in a large basin area with few structures crossing the river, the river water catchment in the estuary after heavy rains caused large areas of disturbance and formed bare land, providing suitable habitat for an annual salt marsh plant community. In contrast, in cases with many structures crossing the river, a stable channel, an excavated riverbed and the suppression of runoff and the resulting disturbance of the estuary, flooding did not occur during high tide. Moreover, we hypothesised that in a small basin with many structures crossing the river, disturbance to the estuary was not likely, and the perennial salt marsh plant community of Phragmites australis would be widely distributed, except for a river type such as the Shinbori River, in which tide and river flow were managed by a final closure.
机译：在这项研究中，我们研究了日本三重县和爱知县伊势湾的8条河流的流域规模和跨河结构差异对这些河流的河口滩涂植被的影响。确定了由大型流域（超过300 km2）的河流形成的河口滩涂的主要植物群落。在宫河（Miya River），主要的植物群落是滨海小穗藻和福寿蒿群落。在the田田河中，主要的植物群落是由Phacelurus latifolius，Artemisia fukudo，Phragmites australis和竹子组成。在库莫祖河（Kumozu River）中，优势群落由沿海植物雪蛤，日本山La豆和日本苔草（Carex pumila）以及黑麦草的外来植物组成。铃鹿河的植物群落主要由外来草草（Eragrostis curvula）主导。在受小规模流域（50 km2以下）影响的河口滩涂中，新，河（福江滩涂）的植物群落以Suaeda maritima为主，而Shio和Harai河的植物群落以芦苇。田中河的植物群落以芦苇和沿海植物为主。关于每个研究地点的植被与河流环境之间的关系，我们假设在一个大河流域，很少有结构越过河流，暴雨过后河口的河水集水会引起大范围的干扰并形成裸露的土地，为每年的盐沼植物群落提供合适的栖息地。相反，在有许多跨河结构，稳定的河道，开挖的河床以及径流的抑制和由此引起的河口扰动的情况下，在涨潮时不会发生洪水。此外，我们假设在一个小河流域，河流中有许多结构，因此不太可能对河口造成干扰，并且除新河河等河流类型外，多年生的芦苇盐沼植物群落将广泛分布。潮汐和河流流量由最终关闭进行管理。

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