文章编号:1003-7853(2023)02-0071-04基于主成分分析的黑河中游农业水资源承载力评价研究张丽霞,刘淑英*,王平,张瑞浩,王静怡(甘肃农业大学资源与环境学院,甘肃兰州730070)摘要:以黑河中游农业水资源承载力为对象,运用主成分分析法、熵权法对黑河中游农业水资源承载力从时间和空间两个角度进行评价分析。结果表明,(1)影响黑河中游农业水资源承载力的主要因素有耕地灌溉率、地表水与地下水资源量。(2)从时间上来看,2015年、2016年与2017年均处于中等承载力,2018年处于弱承载力,2019年处于高承载力。总体来看,2015—2019年黑河中游农业水资源承载力呈上升趋势。(3)从空间上来看,甘州区处于高承载力,民乐县和临泽县处于中等承载力,高台县和山丹县处于弱承载力且山丹县承载力最小。黑河中游各县(区)农业水资源承载力存在明显差异,要因地制宜,采取针对性措施,提高农业水资源承载力,促进农业生产的可持续发展。关键词:农业水资源承载力;黑河中游;熵权法;主成分分析法中图分类号:TV213.9文献标识码:Adoi:10.16202/j.cnki.tnrs.2023.02.016EvaluationofAgriculturalWaterResourcesCarryingCapacityintheMiddleReachesofHeiheRiverBasedonPrincipalComponentAnalysisZhangLixia,LiuShuying*,WangPing,ZhangRuihao,WangJingyi(CollegeofResourcesandEnvironment,GansuAgriculturalUniversity,LanzhouGansu730070,China)Abstract:TakingtheagriculturalwaterresourcescarryingcapacityinthemiddlereachesofHeiheRiverastheobject,theagriculturalwaterresourcescarryingcapacityinthemiddlereachesofHeiheRiverwasevaluatedandanalyzedfromtheperspectivesoftimeandspacebyusingprincipalcomponentanalysisandentropyweightmethod.Theresultsshowthat,(1)themainfactorsaffectingthecarryingcapacityofagriculturalwaterresourcesinthemiddlereachesofHeiheRiverarecultivatedlandirrigationrate,surfacewaterandgroundwaterresources.(2)Intermsoftime,theaverageannualbearingcapacityin2015,2016and2017ismedium,weakin2018andhighin2019.Overall,theagriculturalwaterresourcescarryingcapacityofthemiddlereachesofHeiheRivershowedanupwardtrendfrom2015to2019.(3)Intermsofspace,Ganzhoudistrictisinhighbearingcapacity,MinlecountyandLinzeCountyareinmediumbearingcapacity,GaotaiCountyandShandanCountyarein...