辽宁省畜禽粪便产污系数测算与环境承载力预警分析  

Estimation of Livestock Manure Production and Environmental Bearing Capacity in Liaoning Province

作　　者：吴晓楠 尤佳 杜德来 赵浩东 李婧 于乐 赫亮亮 李悠然 杜立宇[1] WU Xiao-nan;YOU Jia;DU De-lai;ZHAO Hao-dong;LI Jing;YU Le;HE Liang-liang;LI You-ran;DU Li-yu(College of Land and Environment,Shenyang Agricultural University,Shenyang 110866,China;Liaoning Agricultural Development Service Center,Shenyang 110033,China;Liaoning Inspection,Examination&Certification Centre,Shenyang 110032,China)

机构地区：[1]沈阳农业大学土地与环境学院,沈阳110866 [2]辽宁省农业发展服务中心,沈阳110033 [3]辽宁省检验检测认证中心,辽宁沈阳110032

出　　处：《土壤通报》2023年第2期424-431,共8页Chinese Journal of Soil Science

摘　　要：【目的】本文通过对辽宁省畜禽养殖产污系数测算及污染负荷空间分布特征的探讨,为降低畜禽养殖造成的环境污染风险和辽宁省农业的可持续发展提供理论依据。【方法】根据2019年辽宁省畜禽粪便及其主要养分参数的周年监测结果,估算各市区畜禽粪便及其主要污染物的产生系数以及单位耕地面积猪当量负荷量,氮(N)、磷(P)负荷量,并对环境承载力现状进行风险评价。【结果】辽宁省畜禽粪便总产量4.65千万t;产污系数最高的是COD,全氮次之。【结论】辽宁省多数市区畜禽粪便单位耕地面积磷耕地负荷低限额,对环境有尚未构成威胁,且负荷预警值在省内存在空间分布不均的特征。[Objective]In order to reduce the risk of environmental pollution caused by livestock and poultry farming,this paper provided a theoretical basis for the sustainable development of agriculture in the study area by exploring the measurement of livestock and poultry farming pollution production coefficients and the spatial distribution characteristics of pollution loads in Liaoning Province in 2019.[Method]On the basis of previous studies,the coefficients of livestock manure and its main pollutant production were estimated based on the annual monitoring of livestock manure and its pollutant parameters in Liaoning Province,as well as the pig equivalent load per unit of arable land area,nitrogen(N)and phosphorus(P)load in each city.And the risk evaluation of the current situation of environmental carrying capacity was conducted.[Result]The results showed that the total output of livestock manure in Liaoning Province was 4.65 million tons,the highest pollution production coefficient was COD,followed by total N.The average values of pig equivalent load,N and P load in cultivated land in Liaoning Province were 9286.67,113.52 and 16.94 kg hm−2,respectively.The average load warning value was 0.31,and the risk assessment level was grade I.[Conclusion]The P load from livestock and poultry manure in cultivated land was low in most urban areas,which did not pose a threat to the environment,and the load warning value was unevenly distributed in the province.

关 键 词：产污系数 畜禽粪污 负荷预警 

分 类 号：X713[环境科学与工程—环境工程]