Liu Ying, Li Jie, Liu Yizhen, He Liang, Yang Shanshan, Gong Huiying, Xu Ruixin, Yao Xingzi, Ge Gang
Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Education, Nanchang University, Nanchang 330031, China.
Institute of Life Science, Nanchang University, Nanchang 330031, China.
Biology (Basel). 2023 Jul 1;12(7):944. doi: 10.3390/biology12070944.
Flooding duration and sediment texture play vital roles in the growth and adaptation of wetland plants. However, there is a lack of research on the interactive effects of flooding duration and sediments on wetland plants. A two-factor experiment with flooding duration and sediment texture was designed in the study, involving three plant species commonly found in the Poyang Lake wetland (i.e., , , and ). Our findings were as follows: (i) Sediments play a crucial role in the growth and adaptation of hygrophilous plants, but they exhibited a weaker effect than flooding. (ii) Sediment texture mediates flooding to affect the stressing responses of wetland plant functional traits, including the leaf chlorophyll content, the plant height, and the number of leaves and ramets. (iii) Sediment texture forms interactive effects with flooding duration and directly influences hygrophilous plants. The results of this study help provide theoretical insights from a more scientific perspective for the prediction of hygrophilous plant dynamics and to facilitate the formulation of wetland management.
淹水持续时间和沉积物质地对湿地植物的生长和适应起着至关重要的作用。然而，关于淹水持续时间和沉积物对湿地植物的交互作用的研究却很缺乏。本研究设计了一项关于淹水持续时间和沉积物质地的双因素实验，涉及三种鄱阳湖湿地常见的植物物种（即 ， ，和 ）。我们的研究结果如下：（i）沉积物在喜湿植物的生长和适应中起着关键作用，但与淹水相比，其作用较弱。（ii）沉积物质地介导淹水影响湿地植物功能性状的应激反应，包括叶片叶绿素含量、株高以及叶片和分株数量。（iii）沉积物质地与淹水持续时间形成交互作用，并直接影响喜湿植物。本研究结果有助于从更科学的角度为预测喜湿植物动态提供理论见解，并促进湿地管理的制定。
