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依据“四清四治”系统畜禽养殖数据,采用排泄系数法估算畜禽粪便量,计算出江津区各镇街畜禽粪便耕地污染负荷,并对各镇街畜禽粪便对耕地污染现状进行风险评价.结果表明,2013年江津区畜禽粪便产生量为14.66万t,在保障40%有效耕地的前提下,即使养殖粪污归还率为100%,江津区畜禽粪便土地消纳预警风险值为0.11,处于Ⅰ级预警.几江街道、鼎山街道、夏坝镇等养殖量与养殖负荷较高,相应的环境问题应引起注意.在保证耕地利用率40%时,49.34万猪当量/a是江津区畜禽养殖容量红线.
According to the “four clear four governance” system of livestock and poultry breeding data, excretion coefficient method to estimate the amount of livestock and poultry manure, calculate the town of Jiangjin District Town animal manure arable land pollution load, and the town of livestock and poultry manure on farmland pollution The current situation of risk assessment.The results show that in 2013 Jiangjin livestock and poultry production was 146,600 tons, 40% of the effective protection of cultivated land in the premise, even if the breeding of manure return rate was 100%, Jiangjin District, animal manure land consumption Early warning risk value of 0.11, at the level I. Early warning. Ji River Street, Ding Shan Street, Xiaba Town, such as higher breeding and breeding load, the corresponding environmental issues should be noted that 40% of cultivated land use assurance, 493,400 Pig equivalent / a is Jiangjin District livestock breeding capacity red line.