基于植物-基质协同作用的模拟生态沟渠对农田面源污染的削减

打开文本图片集

关键词：稻田面源污染；植物组合；基质组合；生态沟渠；脱氮除磷；有机磷农药中图分类号：X71；X52；X17 文献标志码：A 文章编号：1672-2043（2026）01-0179-10 doi：10.11654/jaes.2025-0284

Reductionof agricultural non-point source pollution by simulated ecological ditches basedon the synergistic effectofplantsandsubstrates

TUXin1，LIJuanying1²，CHENYiqin1

（1.CollgofOceanographyandEcologicalScience，ShanghaiOcean UniversityShanghaiO1306，China.2.ShanghaiEging Research Centerof River and Lake Biochain Construction and Resource Utilization，Shanghai 2O17O2， China）

Abstract：Toexplorethesynegisticeectsofdiferentplatcombinatiosincostructedeologcalditchsandquantitatielyeluciate themecaniichlats，ubsatedcooasmsoutetlatalssdetifdlid VallsnerianatnsastetialplantombationtoughexperimentalsrenngZitendstershellsubstratesereitegatedinto theconstructedecologicalditchsystemandamassbalanceanalysiswasemployed toquantifythecontributionsofvariousremoval pathways.Theesultsinicatedtatinteplatsrengexperent，teombationofTliadebataandValisnerianatanscheved optimalremovalieiesforotalrogen）oitrogen（N-）ndtotalposposT）itoltesacing （204号 68.8% ， 97.4% and 97.1% ，respectively.This plant combination significantly enhanced denitrification，thus improving the removal effciencyoftraterogeFurteore，inthdamicexperiment（drulictentionti6d，teostructedoloicaldi system exhibited removal rates of 88.1 % ， 73.7% ， 99.9% ，and 99.9% for TN，TP，triazophos，and chlorpyrifos，respectively. Among these， NH4-N removal contributed most substantially to TN removal，accounting for 71.8% of total nitrogen reduction.Mechanistic analysis of polutantremovalrevealedthatphosphorusremovalwithintheecologicalditchsystemwasprimarilyachievedthroughplantuptake （ 55.4% ），followed by substrate（ 33.4% ）and soil adsorption （ 11.0% ）.Thalia dealbata exhibited a higher absolute phosphorus removal capacityuetoitslrgerbomass，hreasVallsnerianatansdmonstratedigerposphorusmovalciecyperuitioawing toitsgreaterrotsurfaceareaandrelativegrowthrate.Theremovalofchlorpyrfosandtriazophosprimarilyoccuredthrough biodegradationandhydrolysis.Duetoitsstronghydrophobicproperties，chlorpyrifoswasmorereadilyadsorbedontosubstratesand degraded by microorganisms， while triazophos predominantly underwent hydrolysis.

Keywords：opontsoueplutionofpddld;plantcobination;subtratecombinatio;ologialditch;itrogandospos removal; organophosphorus pesticides

农业面源污染已逐渐取代点源污染成为河流、湖泊等地表水体污染的主要来源。（剩余15970字）