珠海入海河口溶解氧时空变化特征及影响因素研究

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中图分类号：X52

文章编号：1674-6139（2025）12-0122-06

文献标志码：B

Abstract：BasedonthestatisticalanalyssofwaterqualityobservationdatafromShaneShijiaozuifrom2Ol9to2O23，thedissolved oxygenpolltionindexisgenerallhgherthanthcomprehensivepolutionidex，whichisthemainpllutionfactorofthesctionBy analyzingthetemporalvariationofdissolvedoxygen（DO）intheShjiaouisectionofQianshanRiverestuaryandtheinfluenceofdirent environmentalfactorsonDO，theresultsshowthattheDOintheSjaozuisectionhasthecharacterisicsofhighduringthedryseason andlowduringthewetseason.ThehighestmonthismainlyconcentratedinDecemberJanuary，andthelowestmonthisconcentratedin JuneSeptember；eDOconcentrationatthesiteisosielycoelatedwithpHndoductivit；Tereisegaivecoeioih watertemperaturendtotalposhorus；ereisosigificantcorelatiowithtotalnitrogenadammoiairognhontationf disolvedoxyg（D）decreaesinallinfallentsparedtandgaduallyereassiinceasingifalliesit The research results provide preliminary work ideas for the next step of governance work.

Keywords：dissolved oxygen；estuary；water quality；change pattern

前言

随着水污染防治攻坚战的深入开展，河流水环境质量明显提升，但河流低氧问题仍然是阻碍水质达标的关键因素，尤其是入海河口区域低氧的强度、持续时间和频率都在增加，成为诱发河口、海湾低氧问题的先导条件。（剩余5920字）