Evaluation on Chemical Characteristics and Irrigation Suitability of Shallow Groundwater in the Lower Yellow River(Kaifeng)
With the increasing demands for water resources in the Yellow River Basin,groundwater plays an increasingly important role,particularly in agricultural irrigation.In this study,100 samples of shallow groundwater were collected to analyze their chemical characteristics and origins.The irrigation suitability was evaluated by using indicators such as sodium adsorption ratio(SAR),residual sodium carbonate(RSC),soluble sodium content(SC),permeability index(PI),magnesium hazard(MH),and the Quality Standards for Irrigation Water(GB5084-2021).The results showed that HCO3-dominated the anions in the study area,while cations were evenly distributed.The chemical characteristics of groundwater were mainly subject to silicate mineral weathering and carbonate rock dissolution.The irrigation suitability evaluation indicated that SAR,SC,and PI values generally indicated suitable conditions for irrigation,without high salinity water bodies in this region.However,RSC and MH indices suggested a higher risk of soil compaction due to underground water irrigation.This study provides data support for selecting appropriate sources of irrigation water in Kaifeng and offers scientific basis for groundwater management.
Yellow River irrigation areagroundwaterchemical characteristicsirrigation suitability
万方数据
维普
