An optimization of the community of the aquatic higher plants is necessary to construct a steady water ecosystem, especially for the recovery of the submerged plants.
水生高等植物群落的优化，特别是沉水植物的恢复，是建立稳定健康的水生态系统的必要条件。
Bryophyte is a kind of higher plants with small size and simple structure, being the transitional form from aquatic to terrestrial and the most original group of existing higher plants.
苔藓植物是一种形体微小、结构简单的高等植物，是水生向陆生的一种过渡形式，是高等植物中最原始的类群。
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