期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 22, 期 7, 页码 4932-4941出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-014-3892-6
关键词
Cd concentration; Arable soil; China
资金
- National Natural Science Foundation of China [41271190]
- State Scholarship Fund of China [20120832013, 201208320127]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据