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利用统计资料和文献数据,估算了湖北省天门市畜禽粪便排放量与养分资源量,并分析了畜禽养殖业对环境的潜在影响。结果表明,2006年天门市畜禽粪便排放量为1437.917kt,是当年工业固体废弃物产生量的27.63倍;粪便中除含有194.082kt有机质外,还含有10.430ktN、6.572ktP2O5和10.046ktK2O等营养元素;分析发现,除单位耕地面积粪肥N与P2O5平均承载量99.26kg.hm-2和62.53kg.hm-2对环境暂未构成污染威胁外,畜禽粪便中重金属Zn、Cu、As对农田污染较为突出,平均污染负荷量分别为3.019、1.738、0.223kg.hm-2;流失于水体的主要有机污染物BOD5、CODcr、NH3-N、TP、TN负荷量分别为11.048、12.121、1.096、0.908kt和2.580kt,其中CODcr、NH3-N对水体的污染水平为当年工业和生活污染总水平的70.87%、74.36%;向大气排放的CH4为4.742Gg,NH3为5.061kt,其污染负荷比高达30.06%和46.34%,可见畜禽养殖业已对天门市土壤、水体和大气造成了较大的污染。
Using statistics and literature data, we estimated the manure excrement and nutrient resources in Tianmen of Hubei Province and analyzed the potential impact of livestock and poultry farming on the environment. The results showed that the excrement of animal manure in Tianmen City in 2006 was 1437.917kt, which was 27.63 times of that of industrial solid waste in that year. In addition to 194.082kt of excrement, excrement also contained 10.430ktN, 6.572ktP2O5 and 10.046ktK2O and other nutrients ; Analysis found that in addition to the average per unit area of manure fertilizer N and P2O5 carrying capacity of 99.26kg.hm-2 and 62.53kg.hm-2 not yet pose a pollution threat to the environment, the livestock manure in the heavy metal Zn, Cu, As on farmland pollution The average load of pollution was 3.019,1.738,0.223kg.hm-2 respectively. The load of major organic pollutants BOD5, CODcr, NH3-N, TP and TN lost in water bodies were 11.048,12.121,1.096,0.908 kt and 2.580kt, of which CODcr, NH3-N pollution level of the water was 70.87%, 74.36% of the total industrial and domestic pollution levels of the year; CH4 emissions to the atmosphere 4.742Gg, NH3 5.061kt, the pollution load ratio up to 30.06% and 46.34%, showing that livestock and poultry breeding industry has caused greater pollution to the soil, water and atmosphere in Tianmen.