Chao Lei, Zhou Qi-xing, Cui Shuang, Chen Su, Ren Li-ping
Key Laboratory of Terrestrial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
Ying Yong Sheng Tai Xue Bao. 2007 Jun;18(6):1346-50.
This paper studied the profile distribution of heavy metals in soils under different kind livestock feces composts. The results showed that in the process of livestock feces composting, the pH value and organic matter content of soil under feces compost increased significantly, and had a decreased distribution with soil depth. The contents of soil Zn and Cd also had an obvious increase, and decreased with increasing soil depth. Under the composts of chicken and pig feces, soil Cu content decreased with soil depth, while under cattle feces compost, it had little change. Soil Cd and Zn had a stronger mobility than soil Cu, and the Zn, Cd and Cu contents in some soil layers exceeded the first level of the environmental quality standard for soils in China. The geo-accumulation indices showed that only the 0-10 cm soil layer under chicken feces compost and the 0-40 cm soil layer under egg chicken feces compost were lightly polluted by Zn, while the soil profiles under other kinds of livestock feces compost were not polluted by Pb, Cu, Zn and Cd.
本文研究了不同种类畜禽粪便堆肥下土壤中重金属的剖面分布。结果表明，在畜禽粪便堆肥过程中，粪便堆肥下土壤的pH值和有机质含量显著增加，且随土壤深度呈递减分布。土壤锌和镉含量也明显增加，并随土壤深度增加而降低。在鸡粪和猪粪堆肥下，土壤铜含量随土壤深度降低，而在牛粪堆肥下变化不大。土壤镉和锌的迁移性比土壤铜强，部分土层中锌、镉和铜含量超过我国土壤环境质量标准一级。地累积指数表明，仅鸡粪堆肥下0-10cm土层和蛋鸡粪堆肥下0-40cm土层受到锌的轻度污染，其他种类畜禽粪便堆肥下的土壤剖面未受到铅、铜、锌和镉的污染。
