Assessment of cadmium (Cd) concentration in arable soil in China

被引：153

作者：

Zhang, Xiuying ^{[1
]}

Chen, Dongmei ^{[2
]}

Zhong, Taiyang ^{[3
]}

Zhang, Xiaomin ^{[1
]}

Cheng, Min ^{[1
]}

Li, Xinhui ^{[1
]}

机构：

[1] Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing 210023, Jiangsu, Peoples R China

[2] Queens Univ, Dept Geog, Kingston, ON K7L 3N6, Canada

[3] Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing 210023, Jiangsu, Peoples R China

来源：

ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2015年 / 22卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Cd concentration; Arable soil; China; HEAVY-METALS CONTAMINATION; AGRICULTURAL SOILS; TRACE-METALS; WASTE-WATER; BACKGROUND CONCENTRATIONS; RISK-ASSESSMENT; SOUTHEAST-ASIA; HUNAN PROVINCE; SURFACE SOILS; URBAN SOILS;

D O I：

10.1007/s11356-014-3892-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Cadmium (Cd) concentration in arable soil has drawn broad public attention due to its direct effect on Cd concentration in food. However, there have been few studies of surveying Cd accumulation on the national scale in China. This paper collected 486 studies of Cd concentrations in Chinese arable soil. The results showed that the average Cd concentration was 0.27 mg/kg, higher than its background value, indicating that Cd had been introduced into arable soil by human activity. The Cd concentrations in areas of mining and smelting, urban areas, and areas irrigated by wastewater were obviously higher than that in remote areas. Spatially, Cd concentrations were lower in the north than those in the south, and many hotspots existed throughout China due to mining and smelting activities. Most Cd in the arable soil were accumulated from external sources in all investigated provinces except Ningxia Hui Autonomous Region.

引用

页码：4932 / 4941

页数：10

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