鄱阳湖洲滩湿地地下水位对灰化薹草种群的影响

被引：16

作者：

冯文娟 ^{[1
,2
]}

徐力刚 ^{[1
]}

王晓龙 ^{[1
]}

李海英 ^{[3
]}

姜加虎 ^{[1
]}

机构：

[1] 中国科学院流域地理学重点实验室中国科学院南京地理与湖泊研究所

[2] 中国科学院大学

[3] 中国水利水电科学研究院国家水电可持续发展研究中心

来源：

生态学报 | 2016年 / 36卷 / 16期

关键词：

鄱阳湖; 地下水位; 灰化薹草; 种群;

D O I：

暂无

中图分类号：

Q948 [植物生态学和植物地理学];

学科分类号：

071012 ; 0713 ;

摘要：

在气候变化和人类活动的双重影响下,近年来鄱阳湖流域极端水文事件频发,洲滩湿地生态过程也相应发生变化,开展鄱阳湖水文过程变化与植被演替过程的交互作用研究十分必要。选择鄱阳湖典型洲滩植物灰化薹草(Carex cinerascens)为研究对象,通过地下水位控制模拟试验,设置地下水位埋深10、20、40、80、120cm等5个处理,系统探讨了地下水位埋深对鄱阳湖典型湿地植物灰化薹草生长与种群演变的影响。研究结果表明:春季,不同地下水位对灰化薹草种群的密度和群落多样性影响不显著;夏季,不同地下水位对灰化薹草的密度、种群多样性以及藜蒿和灰化薹草的高度比影响显著。地下水位埋深10cm更适宜灰化薹草植株的生长与群落结构的稳定,而地下水位埋深低于80cm,尤其是低于120cm可能会导致灰化薹草种群的退化与演替。研究结果对于揭示地下水位波动作用下鄱阳湖湿地植被种群发生的短期变化和长期演变趋势具有重要的指示意义。

引用

页码：5109 / 5115

页数：7

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