| 我国东部地区农田土壤重金属污染概况 |
| |
| 引用本文： | 邹萌萌,周卫红,张静静,刘影,杜小龙,李建龙.我国东部地区农田土壤重金属污染概况[J].中国农业科技导报,2019,21(1):117-124. |
| |
| 作者姓名： | 邹萌萌 周卫红 张静静 刘影 杜小龙 李建龙 |
| |
| 作者单位： | 1.南京大学生命科学学院, 南京 210093; 2.江苏科技大学苏州理学院, 江苏 张家港 215600 |
| |
| 基金项目： | 国家重点研发研究项目(2018YFD080020D)；江苏省农业三新工程项目(SXGC\[2014\]287)；苏州市科技计划项目(SNG201447)资助。 |
| |
| 摘 要： | 随着经济和社会的高速发展,农田土壤重金属污染对粮食安全及人类的身体健康构成巨大威胁。为了解我国东部地区农田土壤重金属的污染现状,基于东部地区农田土壤重金属污染数据,采用半方差函数分析及克里金(Kriging)插值手段,通过内美罗(Nemerow)综合污染指数和地累积指数等土壤重金属评价方法,对我国东部地区农田土壤重金属砷(As)、铬(Cr)、镉(Cd)、汞(Hg)及铅(Pb)的污染概况进行综合分析。结果表明东部地区重金属Hg污染最为严重,均值为中国土壤Hg元素背景值的2.8倍,近30%东部地区处于Hg中度污染水平;其次为Cd,均值为背景值的2倍,50%以上东部地区处于Cd污染警戒线,半方差分析结果显示Cd污染受人类活动影响最强;广东省农田土壤重金属综合污染最为严重,内美罗综合污染指数高达0.854,克里金插值结果显示As、Cd、Hg及Pb的高值区域均在广东省有所分布。
|
| 关 键 词： | 土壤重金属 农田 中国东部 空间变异 重金属污染评价 |
Heavy Metal Pollution of Cultivated Soil in Eastern China |
| |
| ZOU Mengmeng,ZHOU Weihong,ZHANG Jingjing,LIU Ying.Heavy Metal Pollution of Cultivated Soil in Eastern China[J].Journal of Agricultural Science and Technology,2019,21(1):117-124. |
| |
| Authors: | ZOU Mengmeng ZHOU Weihong ZHANG Jingjing LIU Ying |
| |
| Institution: | 1.School of Life Sciences, Nanjing University, Nanjing 210093; 2.Suzhou Institute of Technology,
Jiangsu University of Science and Technology, Jiangsu Zhangjiagang 215600, China |
| |
| Abstract: | With the rapid development of economy and society, heavy metal contamination of cultivated soil has seriously influenced food security and human health. Based on the data of heavy metal in cultivated soil in eastern China collected from documents, the degree of heavy metal pollution of cultivated land in eastern area was evaluated, by means of semi-variogram analysis, Kriging interpolation, single factor pollution index, Nemerow comprehensive pollution index, and geoaccumulation index. The conclusions showed as follows: the pollution of Pb was the most serious one; the mean value of Hg was 2.8 times higher than background value of element Hg in Chinese soil. Almost 30% of eastern area was under the middle pollution level. The pollution of Cd was the second serious one, and results of semi-variogram analysis indicated Cd was the most influenced by human activities. In addition, the mean value of Cd was 2 times higher than the background value of Cd in Chinese soil. Over 50% of eastern area was under the firing line of Cd pollution. Cultivated soil in Guangdong province may be the key region of heavy metal integrated pollution because Nemerow comprehensive pollution index in Guangdong was the highest (0.854) and Kriging interpolation revealed high value area of As, Cd, Hg, Pb distributed in Guangdong province. |
| |
| Keywords: | heavy metal of soil cultivated land eastern China spatial variation evaluation of heavy metal pollution |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国农业科技导报》浏览原始摘要信息 |
| 点击此处可从《中国农业科技导报》下载免费的PDF全文 |
|
