Accumulation and Migration Characteristics in Soil Profiles and Bioavailability of Heavy Metals from Livestock Manure

The long term and high dosage application of livestock manure may result in heavy metal accumulation and migration in the soil, which may endanger food security and affect the top soil heavy metal environmental capacity. Thus, one of the most important tasks for prevention of soil heavy metal pollut...

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Bibliographic Details
Published inHuanjing kexue Vol. 38; no. 4; p. 1576
Main Authors He, Meng-Yuan, Dong, Tong-Xi, Ru, Shu-Hua, Su, De-Chun
Format Journal Article
LanguageChinese
Published China 08.04.2017
Subjects
Animals
Biological Availability
Chickens
China
Fertilizers
Livestock
Manure
Metals, Heavy - analysis
Soil - chemistry
Soil Pollutants - analysis
Swine
migration
soil profile
heavy metal
wheat
livestock and poultry manure
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Summary:The long term and high dosage application of livestock manure may result in heavy metal accumulation and migration in the soil, which may endanger food security and affect the top soil heavy metal environmental capacity. Thus, one of the most important tasks for prevention of soil heavy metal pollution is scientific determination of the safe use load of heavy metals in livestock manure. A 4-year field plot experiment was carried out to quantitatively study the accumulation and migration characteristics of heavy metals from pig and chicken manure in soil profiles and the differences of bioavailability. The results showed that the contents of Cu and Cd increased significantly by 43.8%-118.6% and 28.2%-44.9% in topsoil(0-15 cm) after 4-consecutive year application of pig manure, and the contents of Cu, Zn, Cd, Cr, As, Pb also increased by 29.7%-48.5%, 239%-456%, 19.9%-80.8%, 40.4%-163%,11.8%-22.0% and 80.3%~95.0% obviously after application of chicken manure. The accumulation rates of Cu and Zn in topsoil were 7
ISSN:0250-3301
DOI:10.13227/j.hjkx.201609227