人工湿地生态系统中不同种类挺水植物对甲烷排放潜力的影响  

Effects of various emergent plants on methane(CH_(4))emission potential in a constructed wetland ecosystem

作　　者：孙会峰[1,2,3] 张继宁 王从[1,2,3] 张鲜鲜 周胜 SUN Huifeng;ZHANG Jining;WANG Cong;ZHANG Xianxian;ZHOU Sheng(Eco-Environmental Protection Research Institute,Shanghai Academy of Agricultural Sciences,Shanghai 201403,China;Shanghai Engineering Research Center of Low-carbon Agriculture(SERCLA),Shanghai 201415,China;Key Laboratory of Low-carbon Green Agriculture in Southeastern China,Ministry of Agriculture and Rural Affairs,Shanghai 201403,China)

机构地区：[1]上海市农业科学院生态环境保护研究所,上海201403 [2]上海低碳农业工程技术研究中心,上海201415 [3]农业农村部东南沿海农业绿色低碳重点实验室,上海201403

出　　处：《上海农业学报》2025年第1期50-57,共8页Acta Agriculturae Shanghai

基　　金：上海市现代农业产业技术体系[沪农科产字(2022)第3号]。

摘　　要：为考察人工湿地生态系统中常用挺水植物的甲烷(CH_(4))排放潜力,以水稻、菖蒲、黄菖蒲、茭草、芦苇、美人蕉、香蒲和再力花等8种挺水植物为研究对象,比较了不同挺水植物在湿地生态系统中的CH_(4)排放潜力差异。结果表明:种植挺水植物湿地的平均单位面积CH_(4)累积排放量是无植物水面(空白对照)的27.9倍;茭草的地上生物量虽然最低,但单位面积和单位生物量CH_(4)累积排放量最高;美人蕉、芦苇和水稻的单位面积和单位生物量CH_(4)累积排放量均处于中等水平;再力花和香蒲的单位面积和单位生物量CH_(4)累积排放量均处于较低水平。因此,为构建高效低碳型人工湿地生态系统,再力花或香蒲等具有高地上生物量、低CH_(4)排放潜力的挺水植物是有效的候选植物。The potential for methane(CH_(4))emissions from various emergent plants within constructed wetlands has not been thoroughly examined.In this study,eight representative species—rice(Oryza sativaL.),sweet sedge(Acorus calamus),yellow iris(Iris pseudacorus),Zizania aquatica(Zizania latifolia),reed(Phragmites australis),canna(Canna glauca),cattail(Typha latifolia),and Thalia dealbata(Thalia dealbata)—were selected as research subjects to investigate the differences in CH_(4)emission potential among those species in constructed wetlands.The results showed that the average cumulative CH_(4)emissions per unit area in wetlands planted with emergent plants were 27.9 times higher than those of the control.Despite having the lowest aboveground biomass,Zizania aquatica exhibited the highest cumulative CH_(4)emissions per unit area and per unit biomass.Meanwhile,canna,reed,and rice demonstrated moderate levels of cumulative CH_(4)emissions per unit area and per unit biomass.In contrast,Thalia dealbata and cattail had consistently lower cumulative CH_(4)emissions per unit area and per unit biomass.These findings suggest that emergent plant species with high aboveground biomass and low CH_(4)emission potential,such as Thalia dealbata or cattail,are effective candidates for constructing high-efficiency,low-carbon constructed wetlands.

关 键 词：挺水植物 人工湿地 甲烷 生物量 低碳 

分 类 号：S682.32[农业科学—观赏园艺] X173[农业科学—园艺学]