沼生植物：多年生的沼泽植物，具有水下越冬芽。例如芦苇(香蒲)。

Helophyte a perennial marsh plant that has its overwintering buds under water. An example is bulrush (Typha).

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芦苇在混生群落和交错区中格局强度没有明显差异，由此可以判定芦苇的空间分布格局形成主要受植物本身生物学特性的影响。

The species characteristic of P. communis was an important factor because there was no significant difference of aggregative intensity in the mixed communities and the ecotones.

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