【摘 要】
：
人工湿地是为了净化污水而建造的一类系统,其环境特征既不同于自然湿地,也不同于一般陆地生境.人工湿地的生物多样性是一个新问题.作者以杭州植物园作为案例研究了亚热带地区
【机 构】
：
江大学生命科学学院,江教育学院,州植物园
论文部分内容阅读
人工湿地是为了净化污水而建造的一类系统,其环境特征既不同于自然湿地,也不同于一般陆地生境.人工湿地的生物多样性是一个新问题.作者以杭州植物园作为案例研究了亚热带地区人工湿地植物多样性的季节变化.结果表明:秋末人工湿地的物种数为72种,其中自然迁入植物54种;冬春季的物种数为46种,其中自然迁入物种33种.在人工湿地中,人工配置的植物种类仍然是群落结构的主体,迁入植物大部分处于伴生地位.应该在人工配置植物的基础上保留一些有价值的自然迁入植物,使人工湿地具有较高的生物多样性,这样既能充分吸收水中的多种营养成分,又能美化环境.亚热带地区可以有冬春和夏秋两个植物功能群在人工湿地中连续生长,这可以充分利用时间生态位,提高人工湿地在冬季的净化效果,增强人工湿地净化能力的季节问稳定性.
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