CAJ | 학술논문

为了评估中国畜禽粪便资源总量及其对环境的影响,以环保部、统计局和农业部发布的区域畜禽产排污系数为基础,利用2010年的统计数据,研究了中国及各省的畜禽粪便资源总量、能源潜力及农地的氮磷负荷,并以欧盟的农地氮磷施用标准对中国畜禽养殖的环境容量和污染风险进行了初步评估.结果表明,2010年,中国畜禽粪便总量达22.35亿 t,可产沼气1072.75亿 m3,山东等6省市粪便资源超过1.00亿 t;全国单位面积农地氮磷平均负荷为43.73 kg/hm2(TN)和9.16 kg/hm2(TP),北京等6省市农地氮磷负荷超标;全国畜禽养殖环境容量为129.56亿头猪当量(以 N 为基准),159.74亿头猪当量(以 P 为基准),实际养殖总量约占环境容量的1/4,考虑化肥施用的影响,约有20个省超过本省50%环境容量.研究结果为区域畜禽养殖总量控制、合理布局和粪污的综合利用提供决策依据.
위료평고중국축금분편자원총량급기대배경적영향,이배보부、통계국화농업부발포적구역축금산배오계수위기출,이용2010년적통계수거,연구료중국급각성적축금분편자원총량、능원잠력급농지적담린부하,병이구맹적농지담린시용표준대중국축금양식적배경용량화오염풍험진행료초보평고.결과표명,2010년,중국축금분편총량체22.35억 t,가산소기1072.75억 m3,산동등6성시분편자원초과1.00억 t;전국단위면적농지담린평균부하위43.73 kg/hm2(TN)화9.16 kg/hm2(TP),북경등6성시농지담린부하초표;전국축금양식배경용량위129.56억두저당량(이 N 위기준),159.74억두저당량(이 P 위기준),실제양식총량약점배경용량적1/4,고필화비시용적영향,약유20개성초과본성50%배경용량.연구결과위구역축금양식총량공제、합리포국화분오적종합이용제공결책의거.
With the increasing demand for meat products, animal husbandry industry has developed rapidly in China in the past decade. Large amount of animal manure were produced, which would be an important sources of biogas energy production or serious pollutant sources to soil and water body, if discharged into the environment without appropriate processing. It is very meaningful to assess the impacts of animal manure on environment in China. Based on the pollutant excretion coefficient of livestock and poultry that was officially released by the Ministry of National Environmental Protection of China, and the latest statistical data from statistical year book of China in 2011 that was released by the National Bureau of Statistics and Ministry of Agriculture, the gross amount of animal manure and the biogas energy potential by animal manure in different regions of China were evaluated in this study. The whole country was divided into six regions and the major 10 species of livestock and poultry were selected. Meanwhile, according to EU's standard of limitation on nitrogen and phosphorus application, the loading capacity of agricultural land soil for nitrogen and phosphorus nutrients in 31 provinces of China were also assessed and the environmental capacity for livestock and poultry feeding were preliminary assessed as well. Comparing environmental capacity of animal feeding with the actual number of livestock and poultry raised, manure pollution risk on agricultural land in different provinces was analyzed. The results indicated that China produced 2.235 billion tons of animal manure in 2010, which would produce biogas 107.275 billion cubic meters, with the biogas by animal manure being about 60% equivalent energy potential of natural gas manure. The cattle manure was 982 million tons, amounted to 44% of the total, followed by pig manure, which was 465 million tons, amounted to 21% of the total. Shandong, Henan, Sichuan, Inner Mongolia, Hebei and Liaoning were the top 6 provinces produced more than 100 million tons and sum up to 916 million tons, amounted to 41% of the total. The average values of agricultural land soil loading of nitrogen and phosphorus nutrients were 43.73 kg/hm2 (TN) and 9.16 kg/hm2 (TP) in China. The loading values in Beijing, Tianjin, Hunan, Guangdong, Henan and Shandong were more than that in other provinces and have exceeded the EU's standard limitation. It can be considered that agricultural land soil in those provinces would be polluted if the animal manure were applied on the agricultural fields, because the number of livestock and poultry raised in those provinces has exceeded the environmental capacity of animal feeding. The environmental livestock feeding capacity in China are 12.956 billion pigs equivalent based on nitrogen and 15.974 billion pigs equivalent based on phosphorus. The actual total amount of livestock and poultry raised amounted to more than a quarter of the livestock feeding capacity, which was 3.473 billion pigs equivalent based on nitrogen and 4.519 billion pigs equivalent based on phosphorus in China. There were 20 provinces exceeded the 50% of environmental capacity animal feeding. Considering chemical fertilizer application, the agricultural land soil in those provinces is in high risk of pollution. The results of this study provided a refernce for decision-making on regional gross control of animal feeding and distribution of livestock farming.