唐山市畜禽粪便特征分布及土壤承载力预警分析

Characteristic Distribution of Livestock and Poultry Manure and Warning Analysis of the Land Bearing Capacity in Tangshan City

估算了2020年唐山市畜禽粪便及粪便主要污染物的产生量,分析了畜禽粪便的排放特征。通过计算畜禽粪便、N、P负荷量及负荷预警值,分析了畜禽粪便对环境的影响程度。结果表明:2020年唐山市畜禽粪便产生量为1325.84万t,牛粪便产生量最大,羊粪便最少;18个县(市、区)中6个畜牧大县产生量相对较多。2020年唐山市畜禽粪便、N、P负荷量分别为18.50 t/hm^(2)、108.91 kg/hm^(2)、35.44 kg/hm^(2),畜禽粪便、N、P负荷预警值分别为0.62、0.64、1.01,P污染风险更大。汉沽管理区、芦台经济开发区、古冶区的畜禽粪便、N、P负荷量及负荷预警值较高,建议进行畜禽养殖总量的控制及污染防控。

This paper estimated the production of livestock and poultry manure and main pollutants in Tangshan City in 2020,in order to analyze the emission characteristics of livestock and poultry manure.The influence degree of livestock and poultry manure on environment was analyzed by calculating the bearing capacity load and the early warning value of livestock and poultry manure,N and P.The results showed that the manure production of livestock and poultry in Tangshan City was 13.2584 million tons in 2020,with the largest amount of cow manure and the least amount of sheep manure.Among the 18 counties(cities and districts),6 great counties of livestock had relatively more manure.In 2020,the bearing capacity load of livestock and poultry manure,N and P in Tangshan City were 18.50 t/hm^(2),108.91 kg/hm^(2) and 35.44 kg/hm^(2),respectively.The early warning value of livestock and poultry manure,N and P were 0.62,0.64 and 1.01,respectively.P pollution risk was higher.The bearing capacity load and the early warning value of livestock manure,N and P in Hangu Management Zone,Lutai Economic Development Zone and Guye District were all relatively higher.Control of the total amount of livestock and poultry breeding,and pollution prevention and control measures should be taken in this area.