Characteristics evolution and regional differences of agricultural non-point source pollution in the Yellow River Basin

doi:10.7522/j.issn.1000-694X.2024.00086

Journal of Desert Research ›› 2024, Vol. 44 ›› Issue (6): 146-154.DOI: 10.7522/j.issn.1000-694X.2024.00086

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Characteristics evolution and regional differences of agricultural non-point source pollution in the Yellow River Basin

Guangqin Li¹(), Wenqi Niu¹, Jiangjiao Wang²()

^1.School of International Economics and Trade，Anhui University of Finance and Economics，Bengbu 233030，Anhui，China
^2.Jiyang College of Zhejiang AF University，Shaoxing 311800，Zhejiang，China

Received:2024-05-20 Revised:2024-07-06 Online:2024-11-20 Published:2024-12-06
Contact: Jiangjiao Wang

Abstract

Abstract:

Under the dual constraints of resources and environment， examining the calculation indicators， evolutionary 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 development. This article takes agricultural fertilizers， livestock and poultry farming， and crop solid waste as pollution 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 coefficient method to calculate the regional differences. Research has shown that：（1） The overall trend of agricultural 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 Yellow River Basin. Livestock and poultry farming has the highest contribution rate to COD and TP， while crop solid 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 regions.

Key words: Yellow River Basin, agricultural non-point source pollution, DAGUM GINI coefficient, regional differences

CLC Number:

F323

Guangqin Li, Wenqi Niu, Jiangjiao Wang. Characteristics evolution and regional differences of agricultural non-point source pollution in the Yellow River Basin[J]. Journal of Desert Research, 2024, 44(6): 146-154.

Figures/Tables 10

Table 1 Pollution units of agricultural non-point source pollution

污染单元	污染源	调查指标	单位	污染清单
农田化肥	氮肥、磷肥	折纯施用量	万t	TN、TP
畜禽养殖	牛、羊、猪	年末存栏量	万头	COD、TN、TP
畜禽养殖	家禽（鸡鸭）	年末出栏量	万只	COD、TN、TP
农作物固体废弃物	稻谷、小麦、玉米、豆类、油料	总产量	万t	COD、TN、TP

Table 2 Estimated coefficients for agricultural non-point source pollution

污染源	污染清单	污染系数			单位	参数来源
污染源	污染清单	COD	TN	TP	单位	参数来源
农田化肥	氮肥磷肥	—	0.44	0.37	kg kg	《第一次全国污染源普查-农业污染源：肥料流失系数手册》《第一次全国污染源普查-畜禽养殖业源：产排污系数手册》
畜禽养殖	牛	401.50	61.10	10.07	kg·头^-1（kg·只^-1）
	猪	47.88	47.88	1.70
	羊	4.40	2.28	0.45
	家禽	1.17	0.28	0.12
农作物固体废弃物	稻谷	5.63	5.82	0.42	0.001 t·t^-1
	小麦	6.39	5.15	0.90
	玉米	11.23	10.69	2.39
	豆类	17.61	22.23	2.24
	油料	20.57	45.43	2.24

Fig.1 Agricultural non-point source pollution emissions and intensity in the Yellow River Basin from 2006 to 2022

Fig.2 Agricultural non-point source COD， TN， and TP pollutant emissions in the Yellow River Basin from 2006 to 2022

Fig.3 Agricultural non-point source COD pollution source emissions in the Yellow River Basin from 2006 to 2022

Fig.4 Agricultural non-point source TN pollution source emissions in the Yellow River Basin from 2006 to 2022

Fig.5 Agricultural non-point source TP pollution source emissions in the Yellow River Basin from 2006 to 2022

Fig.6 Regional internal differences in agricultural non-point source pollution emission intensity in the Yellow River Basin from 2006 to 2022

Fig.7 Regional differences in agricultural non-point source pollution emission intensity in the Yellow River Basin from 2006 to 2022

Fig.8 Source contribution rate of regional differences in agricultural non-point source pollution emission intensity in the Yellow River Basin from 2006 to 2022

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Characteristics evolution and regional differences of agricultural non-point source pollution in the Yellow River Basin

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