小流域生态水环境污染特征影响因子及演变规律研究

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文章编号：1674-6139（2026）03-0146-04

中图分类号：X824文献标志码：B

Study on Influencing Factors and Evolution Patterns of Ecological Water Pollution in Small Watersheds

Chen Jianxiang

（BaoshanEcologicalEnviromentBureauSidianSubureauEcologicalEnvironentoitoringStation，aoshan82，ina）

Abstract：Toauratelyidentifytheeyinfuencingfactorsofcologicalwaternvironmentpolutioninsallwatersedsandreveal theirtemporalevolutionpates，thisstudyemploysacombinedweightimproedgreyelatioalanalysisethod.Teeyweightede lationaldegrewloacedgctoaddctos areselectedastheprimaryinfluencingfactorsThesingle-factorwaterqualityidentificationindexmethodisthenusedtoanalyzethe temporalevolutioncharacteristcsTesultsindicatethatindustrialastewaterdishareistecoeifueningfcto，sigiicatlyffectingdissolvedoxygenndtotalnitrogenlevels.Experimentalfindingsfrom2O14toO23showthatpHlevelshavegraduallincreased whileremaingitinafeange，issoledygnhassoontiuousupwardrend，andothtepmanganateindexdicaloxygendemandavedliedAditioalytotalposphouscocenrationsinteidleandlowerreachesndtotalrogco centrationsintheuperandmidleeacheshavegenerallydecreasedOverall，tecologicalwaterenviomentqualityfteudied small watershed has shown an improving trend.

Key words：small watershed；ecological water environment；polution characteristics；influence factor；evolution rules

前言

小流域，作为自然界中相对独立且敏感的水体汇集区域，生态水环境的变化直接反映人类活动与自然环境的相互作用关系[1]。（剩余3730字）