生态学报2026，Vol.46Issue(11)：5611-5625,15.DOI:10.20103/j.stxb.202504220953
湖滨带水生植物-微生物介导的N2O排放研究进展
Research progress of aquatic plant-microbe mediated N2O emissions in littoral wetlands of freshwater lakes
摘要
Abstract
Freshwater littoral wetlands are the typical ecotones between terrestrial and aquatic ecosystems.Driven by periodic water level fluctuations and mediated by aquatic plants in freshwater littoral wetlands,the dynamic oxidation-reduction gradients,along with highly active microbial metabolism,jointly regulate the production and emission dynamics of N2O.The growth and root exudates of aquatic plants foster a unique rhizosphere microbiome that is intricately linked to the nitrogen(N)cycle;these microorganisms could provide an essential N source for the growth of aquatic plants through N conversion.Therefore,the aquatic plant-microbe interactions establish the freshwater littoral wetlands as both critical zones for N-cycle processes and significant sources of N2O emissions.A systematic analysis of the spatiotemporal variations and regulatory mechanisms of aquatic plant-microbe mediated N2O emissions in freshwater littoral zones is crucial for elucidating the impacts on greenhouse gas sources and sinks and maintaining N balance in aquatic ecosystems.In this review,we first introduced the N2O dynamics mediated by aquatic plants-microorganisms in the freshwater littoral wetlands:N2O is primarily produced through several N cycle processes,including nitrification,denitrification,and nitrifier denitrification.The produced N2O may either be reduced via N2O reductase or released into the atmosphere through bubble release,concentration gradient diffusion or transport by aquatic plants.We then summarized the variation characteristics of N2O emission across different spatiotemporal scales,including daily and seasonal fluctuations,and the variations across latitudinal climate types,elevation differences and hydrological gradients.The aquatic plant-microbe mediated N2O emissions in freshwater littoral zones are both regulated by abiotic factors,e.g.,moisture,temperature,and nutrients,and biotic factors,including plant life forms and microbial communities.Finally,we presented the future research prospects to enhance our understanding of aquatic plant-microbe interactions on N2O emissions,including integrating multi-dimensional data,deepening microbiome analysis,and constructing and optimizing N2O emission estimation models.关键词
湖滨带/水生植物/氧化亚氮/时空变异/微生物机理Key words
freshwater littoral wetland/aquatic plant/nitrous oxide/spatiotemporal variations/microbial mechanism引用本文复制引用
苏芮,曾巾,胡思文,周天旭,黄睿,赵大勇..湖滨带水生植物-微生物介导的N2O排放研究进展[J].生态学报,2026,46(11):5611-5625,15.基金项目
国家自然科学基金项目(32171563) （32171563）
江苏省碳达峰碳中和科技创新专项资金项目(BT2024012) （BT2024012）
江苏省自然科学基金(BK20220705) （BK20220705）
江苏省水利科技项目(2025021) （2025021）
