江南桤木与芦苇在潮滩湿地的适应性对比研究

张海燕; 王天慧; 陆健健

江南桤木与芦苇在潮滩湿地的适应性对比研究

1.
华东师范大学河口海岸学国家重点实验室,上海 200062;
2.
华东师范大学上海市城市化生态过程与生态恢复重点实验室,上海 200062;
3.
上海大学生命科学学院,上海 200444

详细信息

中图分类号: Q945.78
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出版历程
- 收稿日期: 2013-03-01
- 修回日期: 2013-06-01
- 刊出日期: 2014-01-25

Comparative study on the adaptability of Alnus trabeculosa and Phragmites australis in tidal wetland

1.
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China;
2.
Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, East China Normal University, Shanghai 200062, China;
3.
Department of Life Science, Shanghai University, Shanghai 200444, China

摘要

摘要: 以林泽工程物种江南桤木和崇西潮滩优势种芦苇为研究对象，进行半日潮的潮汐淹水模拟实验，对比研究不同潮汐淹水时间下两种植物的光合特征、生理指标变化.研究结果表明：随着持续淹水天数的增加，江南桤木和芦苇气孔导度(Gs)、净光合速率(Pn)、蒸腾速率(Tr)变化趋势一致，均呈下降趋势；江南桤木和芦苇的水分利用效率(WUE)随持续淹水天数的增加呈现出先升高后降低的趋势，说明一定程度的淹水促进了两者的水分利用效率，两种植物表现出一定的耐水淹能力.随着日淹水时间的增加，江南桤木的POD活性降低，MDA含量增加，芦苇POD活性先下降后增加，MDA含量无积累；不同日淹水处理下两种植物的叶绿素含量均无明显变化.由此可见，在潮滩湿地周期性淹水条件下，江南桤木具有和芦苇类似的耐水淹能力，是一种适用于林泽湿地工程构建的优良植物物种.
- 崇西湿地 /
- 江南桤木 /
- 芦苇 /
- 模拟淹水 /
- 生理生态特性
Abstract: Self-designed experimental mesocosm for semidiurnal tidal simulation was used to compare the effect of different submergence time on photosynthesis process and physiological characteristics of Alnus trabeculosa and native species (Phragmites australis). The results showed that A. trabeculosa and P. australis have similar decreasing tendency in Stomatal conductance (Gs), Net photosynthetic rate (Pn) and Transpiration rate (Tr) with increasing submergence time; however, the water use efficiency (WUE) of these two species showed the tendency of first increased and then decreased, suggesting that the increasing submergence time promoted the WUE of A. trabeculosa and P. australis in some degree. With daily submergence time increasing, POD activity and MDA content of A. trabeculosa decreased and increased, respectively; POD activity of P. australis first increased and then decreased; however, MDA content of P. australis hasnt significant difference. A. trabeculosa showed the similar tolerance to the periodic inundation of tidal wetland, which suggests that A. trabeculosa can be also used to construct ecological engineering in Chongxi wetland.
- Chongxi wetland /
- Alnus trabeculosa /
- Phragmites Australis /
- smiulated waterlogging /
- eco-physiological process

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参考文献(1)

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