【摘要】 为揭示海河流域平原区畜禽养殖对土壤污染的状况,以河北省馆陶县为例,对馆陶县猪、牛、羊、鸡4个典型养殖场内外的8个采样点,共计88个土壤样品中的重金属(铅、镉、砷、汞、总铬)和营养盐(总氮、总磷、硝态氮、铵态氮)进行检测分析。通过检测结果垂向剖面分布图发现,畜禽养殖对土壤环境重金属元素影响较小,在各养殖场内外,重金属浓度均满足土壤环境质量二级标准,大多数点位重金属浓度满足土壤环境质量一级标准值。畜禽养殖对土壤营养盐元素的含量影响较大,具有一定的表层富集现象,各养殖场土壤表层营养盐污染物浓度极高,但垂向浓度急速减小,一般至土壤深度60 cm左右浓度接近天然状态,最多至100 cm深度,主要土壤污染物浓度基本达到天然背景值。更多还原

【Abstract】 In order to reveal the situation of soil pollution caused by livestock and poultry breeding in the plain area of Haihe River Basin, eighty-eight soil samples including eight sampling sites inside and outside of four typical pig, cow, sheep and chicken farms are collected in Guantao county, Hebei Province. The heavy metals（Pb,Cd,As,Hg,Cr） and nutrients（TN,TP,NO^-₃,NH⁺₄） concentrations are analyzed. The vertical distribution of the heavy metals shows that livestock and poultry breeding have little impact on heavy metals in the soil environment. Heavy metal concentrations are within the secondary standard of the soil environmental quality standard both inside and outside of the farms, and heavy metal concentrations in most of the points are within the first standard of the soil environmental quality standard. Livestock and poultry breeding have a great influence on the content of soil nutrients, and nutrients are enriched in the surface soil. The concentrations of nutrients on the surface soil of each farm are extremely high, while the nutrients concentrations decrease rapidly with the depth of the soil profile. As a result, the concentrations of pollutants reach the natural background value at the depth around 60 cm（the deepest up to 100 cm）.更多还原