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Data integration analysis: Heavy metal pollution in China's large-scale cattle rearing and reduction potential in manure utilization

文献类型： 外文期刊

作者： Xu, Yan 1 ; Li, Jing 1 ; Zhang, Xubo 1 ; Wang, Lingqing 3 ; Xu, Xiangbo 1 ; Xu, Li 4 ; Gong, Huarui 1 ; Xie, Hanyou 1 ; Li, 1 ;

作者机构： 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China

2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China

4.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China

关键词： Large-scale farming; Feed-feces-soil chain; Heavy metal pollution; Livestock manure; Passivating agent

期刊名称：JOURNAL OF CLEANER PRODUCTION （ 影响因子：9.297； 五年影响因子：9.444 ）

ISSN： 0959-6526

年卷期： 2019 年 232 卷

页码：

收录情况： SCI

摘要： Manure generated from livestock farming is currently the focus of attention of global scientific community. China's livestock manure is extremely rich with a high potential for heavy metal contamination. Here, data were collected for 2000-2018.6 from China's National Statistical Data, Elsevier, China National Knowledge Infrastructure and other literature databases and analyzed for "feed-feces-soil" chain of heavy metals. An integrated analysis was done to explore the reductive effect of existing technologies on heavy metals in cattle manure. Excessive addition of heavy metal elements to feed is widespread in China. High amounts of undigested heavy metals are excreted through animal manure. The study showed that spatial variability of heavy metal contents in cattle manure was extremely large. The excess cupper (Cu) was higher than that of zinc (Zn), and was higher in southern than in northern China. Chemical treatments were more effective than physical and biological ones in controlling heavy metal pollution. The optimal reduction ratios of the effective Zn and Cu contents were 21.72% and 33.11%, respectively. The Zn and Cu contents could be reduced by 1.96 x 10(7) and 5.92 x 10(6) kg per year, respectively. This could reduce the risks posed by heavy metals after manure-based fertilizer applications in crop cultivation. (C) 2019 Published by Elsevier Ltd.

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