Characteristics evolution and regional differences of agricultural non-point source pollution in the Yellow River Basin
Under the dual constraints of resources and environment,examining the calculation indicators,evo-lutionary characteristics,and regional differences of agricultural non-point source pollution in the Yellow River Basin plays an important foundational role in promoting ecological protection and high-quality agricultural devel-opment.This article takes agricultural fertilizers,livestock and poultry farming,and crop solid waste as pollu-tion units,uses inventory analysis method to calculate the agricultural non-point source pollution emissions and emission intensity of nine provinces in the Yellow River Basin from 2006 to 2022,and uses DAGUM GINI coef-ficient method to calculate the regional differences.Research has shown that:(1)The overall trend of agricultur-al non-point source pollution emissions and emission intensity in the Yellow River Basin is deteriorating,with an average annual growth rate of 1.85％and 1.06％,respectively.The main source is COD pollutants.(2)There are significant differences in agricultural non-point source pollution caused by various pollution sources in the Yel-low River Basin.Livestock and poultry farming has the highest contribution rate to COD and TP,while crop sol-id waste has the highest contribution rate to TN.(3)From 2006 to 2022,the regional internal differences in the intensity of agricultural non-point source pollution emissions in the Yellow River Basin have shown a narrowing trend,with regional differences being the main source,and there is an imbalance in pollution control between re-gions.
Yellow River Basinagricultural non-point source pollutionDAGUM GINI coefficientregional differences
NETL
NSTL
万方数据
