首页|盐城滨海淡水湿地芦苇光合特性及叶绿素荧光特性日变化研究

盐城滨海淡水湿地芦苇光合特性及叶绿素荧光特性日变化研究

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[目的]探讨盐城滨海淡水湿地芦苇光合特性和叶绿素荧光特性.[方法]以滨海淡水湿地芦苇为研究对象,测定光合参数和叶绿素荧光参数日变化,并与滨海盐沼湿地芦苇进行比较.[结果]盐城滨海淡水湿地芦苇净光合速率、气孔导度、蒸腾速率和胞间CO2浓度日变化呈双峰型,水分利用效率日变化呈"U"型.电子传递速率日变化整体上呈下降趋势,非光化学淬灭系数和实际光化学量子效率日变化分别呈倒"U"型和"U"型.滨海淡水湿地芦苇净光合速率高于滨海盐沼湿地芦苇,具有更强的光合能力.[结论]盐城滨海淡水湿地芦苇相较于滨海盐沼湿地芦苇具有更强的光合固碳能力.
Study on Diurnal Variation of Photosynthetic and Chlorophyll Fluorescence Characteristics of Phragmites australis in Yancheng Coastal Freshwater Wetland
[Objective]To explore the photosynthetic characteristics and chlorophyll fluorescence characteristics of Phragmites australis in Yancheng coastal freshwater wetland.[Method]Taking Phragmites australis in Yancheng coastal freshwater wetland as the research object,the diurnal changes of photosynthetic parameters and chlorophyll fluorescence parameters of Phragmites australis in coastal freshwater wetlands were measured and compared with Phragmites australis in coastal salt marshes.[Result]The diurnal variation of net photosynthetic rate,stoma-tal conductance,transpiration rate and intercellular CO2 concentration of Phragmites australis in the coastal freshwater wetland of Yancheng presented a double peak pattern,the diurnal variation of water use efficiency showed a"U"pattern.The diurnal variation of electron transfer rate had a downward trend as a whole,and the diurnal variation of non photochemical quenching coefficient and actual photochemical quantum efficiency presented an inverted"U"pattern and a"U"pattern,respectively.The net photosynthetic rate of Phragmites australis in coastal freshwater wetland was higher than that in coastal salt marsh wetland,and it had stronger photosynthetic capacity.[Conclusion]Compared with coastal salt marsh wetlands,Phragmites australis in Yancheng coastal freshwater wetland has stronger photosynthetic carbon fixation capacity.

Coastal freshwater wetlandPhragmites australisDiurnal variationPhotosynthetic characteristicsChlorophyll fluorescence charac-tenstics

陈皓、刘为东、李静、叶思源、江星浩、韩宗珠

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江苏省测绘工程院,江苏南京 210003

青岛海洋地质研究所中国地质调查局滨海湿地生物地质重点实验室,山东青岛 266037

海洋地质过程与环境功能实验室崂山实验室,山东青岛 266061

山东大学海洋研究院,山东青岛 266237

山东省煤田地质规划勘察研究院,山东济南 250104

中国海洋大学海洋地球科学学院,山东青岛 266100

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滨海淡水湿地 芦苇 日变化 光合特性 叶绿素荧光特性

国家林业和草原局应急揭榜挂帅项目国家自然科学基金区域创新发展联合基金重点项目崂山实验室科技创新项目国家重点研发计划中美政府间科技创新重点专项中国地调局项目中国地调局项目黄海湿地研究院开放基金

202302U22A20558LSKJ2022040032016YFE0109600DD20189503DD2022177520210108

2024

10.3969/j.issn.0517-6611.2024.04.014

安徽农业科学
安徽省农业科学院

安徽农业科学

影响因子：0.413
ISSN：0517-6611
年,卷(期)：2024.52(4)
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