期刊论文

Study Plant Photosynthetic Characteristics of Canna glauca and Hydrocotyle vulgaris and Their Removal Effects on Nitrogen and Phosphorus

中文

生态环境学报

1674-5906

2020

29

5

1014-1020

10.16258/j.cnki.1674-5906.2020.05.018

湖南省教育厅项目(17C0291) 湖南省自然科学基金项目(2019JJ40013)。

本校为第一机构

为了探讨沟渠水生植物的光合特性及其氮磷去除效果,为水生植物应用于沟渠污染水体的生态修复及物种选择提供理论依据,以生态沟渠水生美人蕉与铜钱草两种水生植物为试验材料,在晴天采用便携式CID-340光合仪测定了净光合速率(Pn)等生理生态指标(光合有效辐射(PAR),气孔导度(Gs),胞间CO_2浓度(Ci)和蒸腾速率(Tr)),并测定了沟渠水体的氮磷含量。结果表明:水生美人蕉和铜钱草在自然条件下叶片净光合速率日变化均呈双峰曲线,中午光合“午休”现象明显;水生美人蕉叶片净光合速率日均值大于铜钱草,其净光合速率受气孔导度的影响也最大,而铜钱草净光合速率则受光合有效辐射和气孔导度的影响较大;另外,水生...

In order to study the photosynthetic characteristics of the aquatic plants in ditches and their removal effects on nitrogen and phosphorus,and to provide theoretical basis for the aquatic plants which can apply to the ditch polluted water on the ecological restoration and species selection.We chose the ecological ditch Canna glauca and Hydrocotyle vulgaris as the test materials,in sunny days,the CID-340 Portable photosynthetic system was used to measure the plant ecophysiological variable such as the net photosynthetic rate etc.to measure the p...