福建林业科技2025，Vol.52Issue(4)：26-33,41,9.DOI:10.13428/j.cnki.fjlk.2025.04.004
闽江口典型湿地植物光合生理与土壤环境季节动态变化
Seasonal Dynamics of Photosynthetic Physiology and Soil Environment of Typical Wetland Plants in the Minjiang Estuary
摘要
Abstract
To explore the relationship between photosynthesis of vegetation in the Minjiang River Estuary and soil moisture content and pH,plots of Kandelia obovata Sheue,Phragmites australis and Cyperus malaccensis were set up in the Minjiang River Estuary Wetland.The net photosynthetic rate(Pn),transpiration rate(Tr),intercellular CO2 concentration(Ci)and stomatal conductance(Gs)of the three plants were measured in spring,summer,autumn and winter,as well as the soil moisture content and pH at 0-80 cm depth.The results showed that the Pn,Tr and Gs of Kandelia obovata Sheue reached the highest in summer,and Ci was the highest in winter;the Pn and Gs of Phragmites australis were the highest in summer,and Tr and Ci were the highest in spring;the Pn and Tr of Cyperus malaccensis were the highest in spring,Gs was the highest in summer,and Ci was the highest in winter.The soil moisture content generally increased with the increase of soil depth.The soil pH values of the wetland vegetation were weakly acid-ic.Correlation analysis showed that Pn was significantly correlated with pH of the 0-20 cm soil layer,and Tr was significantly corre-lated with the pH of each soil layer.In conclusion,the photosynthetic physiological characteristics of different wetland vegetation show obvious seasonal differences and are closely related to soil moisture content and pH value.Among them,the transpiration rate is par-ticularly sensitive to the changes in soil pH at each soil layer,and the two show a significant correlation.关键词
闽江口湿地/光合生理/土壤含水量/土壤pH值/季节动态Key words
Minjiang River Estuary Wetland/photosynthesis/soil moisture content/pH value/seasonal dynamics分类
农业科技引用本文复制引用
李志豪,张马啸,刘奇,张瑜,潘辉,周丽丽..闽江口典型湿地植物光合生理与土壤环境季节动态变化[J].福建林业科技,2025,52(4):26-33,41,9.基金项目
福建省林业科技项目(2022FKJ30 （）
2025FKJ22) （）
自然资源部海洋生态保护与修复重点实验室/福建省海洋生态保护与修复重点实验室开放基金课题(EPR2024010) （EPR2024010）
