Investigation on the Pollution Status of Livestock and Poultry Manure Cultivated Land and Water Body in Shan-dong Province
In order to further investigate and study the pollution status of livestock manure on cultivated land and water body in Shandong Province,the sewage coefficient method was used to estimate the livestock manure and urine production,cultivated land load,water pollution load index and other indicators in Shandong Province and other cities in 2022.The sta-tus quo and pollution severity of livestock and poultry breeding in different prefecture-level cities were analyzed and evalua-ted,with a view to providing theoretical basis for reasonable breeding in Shandong Province in the next step.In 2022,a to-tal of 256.1989 million tons of livestock and poultry excrement were produced in Shandong Province,of which the top three were Weifang City,Linyi City and Liaocheng City,accounting for 13.97％,13.12％and 8.9％of the province respec-tively.The main pollutant emissions of livestock and poultry manure reached 19.698 million tons,of which COD and BOD emissions were 43.82％and 38.57％,respectively.The average load of cultivated land in Shandong Province was 31.50 t·hm-2,and the alarm value level was Ⅳ.Liaocheng City had 58.43 t·hm-2 with serious load,followed by Weifang City with 50.77 t·hm-2.The prefecture-level cities exceeding the average load of Shandong Province accounted for 31.25％.In 2022,the average diffusion concentration of various sources of livestock and poultry manure in water bodies in Shandong Province was as high as 116.11 mg·L-1,among which 43.75％of prefecture-level cities exceeded the average diffusion concentration in Shandong Province,and the top three were Liaocheng 287.16 mg·L-1,Heze216.83 mg·L-1 and Dezhou 216.17 mg·L-1.The average isostandard pollution load in Shandong Province was as high as 55.96,and the index of isostandard pollution load in Liaocheng City was the highest(144.64),followed by Heze City 102.54 and Dongying City 100.01.Although the emission of animal manure pollutants and other standards in Dongying City was only 99.707 billion cubic meters,far lower than that in Yantai and Weifang,water resources were relatively scarce.It only accounts for 1.96 in Shandong Province.In general,livestock manure has caused serious and extensive pollution to cultivated land and water in Shandong Province,which must be paid enough attention to.
livestock manure pollutionarable land and water pollutionShandong Province
万方数据
维普
