土壤/沉积物干湿交替关键带水位波动调控温室气体排放的氧化还原机制

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关键词：水位变化；天然有机质（NOM）；氧化还原；水陆交错带；温室气体中图分类号：X171.1 文献标志码：A 文章编号：1672-2043（2025）12-3025-16 doi：10.11654/jaes.2024-1107

Redox mechanisms bywhich water table fluctuations in thecritical zone of soil/sediment wet-dry alternation regulate greenhouse gases emissions

YANG Chengong，QIANChang'，WANGNingxin，WUJunming'，YUJieyu，ZHOUXudong4，IUixuan5，Ihun，YUZiguo （1.NanjingUnesiyfoatioieeadcholing，na;gIsiuteofchol China;3.SouthnUnversityofienceandcholohenzen8OChina;4.NanjgHdraulicResearchIstituteinstyf WaterResousj，a;lrthsUit;6.stel Technology，Shandong University， Qingdao ， China）

Abstract：Inrecentyears，frequentexremeclimateeventshaveldtosignficantfluctuatiosinwatervelsitintheriparianonsof aquaticecosystems.Thevarying waterlevelheights，flodingdurations，andthefrequencyofwet-drycyleshaveasubstantialpacton theemissionofgreehousegasesfrosoils/sedimentsinaquatic-terestrialcotoe.Naturalrganicmater（NOM），sadoxactie substance，iswidelydistributedinthesoils/sedimentsofriparianzonesandcandrivetheoxidationandreductionofelementsto competitively obtain the electron sources required for the generation of greenhouse gases such as CO 2 and CH4， thereby participating in the regulationofgreenousegasmissions.Therefore，thisreviewsummarzes thecuentstateofresearchonthedyamicmicromeanisms ofNOMregulatingelectronflowduringdrywetalterationcylesundervaryingwaterlevels，aswellasthecorespondingchangesin microbialstructurendfunction.Furtherore，isusssthegeohemicalouplingmechanismsbyichrtcalwatervelnges regulatetheessoofgreousegsinipaaonsMeailetisvelsoexplosdifretostmodelsulusd forcarboncyclesiulatioofteestrialaterodiesdprdictionofousegasesiosndfocusoelaboatingtetial advantagesofthredox-basedglobalecosystemmodel.Tosumup，aseriesofinfluencingfactorshaveledtotheuncertaintyncarbon emission accounting in aquatic-terrestrial ecotone.

Keywords：waterlevelfluctuations; natural organic mattr（NOM）;redox;aquatic-terrestrialecotone; greenhouse gases

水生生态系统在驱动陆地生态系统生源要素周转中扮演重要角色[1-4]。（剩余39348字）