2001一2021年中国化肥施用环境风险及其脱钩研究

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中图分类号：F224 文献标识码：A 文章编号：1008-9500（2025）05-0229-03

DOI： 10.3969/j.issn.1008-9500.2025.05.069

Abstract： This paper takes the provincial boundaryas theunit to calculate the non-point source polution emissions of fertilizers ineachregion.ArcGIS software isusedtoanalyzethespatialpattrnoffertilizerappicationamount，fertilizer non-point source pollution emisions，and grain yield.Deviation standardization and environmental risk assessment modelsare used toevaluate theenvironmental risksoffertilizerapplication.The Tapiodecoupling model isused to study the coordination relationship between fertilizer application amount and grain yield.Research has shown thatthe spatial distributionoffertilizer applicationis graduallydispersing，and grainproductionis more concentrated inthenorthsouth direction.The hotspots of non-point source pollution emissions are expanding towards the northwest.The relationship between fertilizer applicationand grain yield has shifted from strong negativedecoupling to strongdecoupling，and the eficiencyoffertilizerusehassignificantlyimproved，whichisinline withtheidealdevelopmenttrend.Thisstudyprovides technicalandtheoretical guidanceforthecontroloffertilizernon-pointsourcepollutionandthepromotionoffertilizationin grain production， which is helpful for achieving sustainable agricultural development.

Keywords： fertilizer application; environmental risk; decoupling

根据联合国报告，全球粮食生产需在未来30年内大幅增加，以应对粮食危机，而化肥作为提升产量的关键，其大量使用却引发了土地退化、生态平衡破坏及面源污染等问题。（剩余3456字）