四川师范大学学报（自然科学版）2012，Vol.35Issue(3)：418-424,7.DOI:10.3969/j.issn.1001-8395.2012.03.028
郑州市典型城市土壤剖面Zn、Ni分布特征分析
Analysis on Distribution of Zn and Ni in Typical Urban Soil Profiles of Zhengzhou City
摘要
Abstract
In order to investigate the distribution of heavy metals in urban soils, causes and characteristics of migration, nine typical urban soil profiles from different functional areas and two suburban control sections of Zhengzhou City were taken through dividing urban functional area. Contents of Zn and Ni and their profile distributions were analyzed. The results indicate that the contents of Zn in Zhengzhou urban soils are significantly different from those of the suburb. Zn contents ranging from 17.05 mg/kg to 1400.72 mg/kg in urban profile soils indicate a very large spatial variability in the investigated areas, and average of 306.67 mg/kg, higher than grade II soil environmental quality standards, so there is a certain degree of Zn contamination. Otherwise, the average of Ni content in urban profile soils is 12.41 mg/kg, lowering than the soil background levels, which means there is no Ni pollution. The profile distributions of Zn and Ni in urban soils are very complex. Zn concentration in urban soil profile, accumulating chiefly on topsoil and subsoil, is strongly related to residential daily lives, industrial activities and traffic transportation. The size of Ni content in the soils is affected by soil parent material, and the vertical distribution and migration hasn' t a regular pattern, because it is mainly constrained by disturbance of human activities. Zn content in soils is no correlation between physical and chemical properties; otherwise, there is a significant positive correlation between Ni content and soil clay, cation exchange capacity.关键词
城市土壤/重金属/土壤剖面/分布/郑州市Key words
urban soils/ heavy metal/ soil profile/ distribution/ Zhengzhou city分类
资源环境引用本文复制引用
楚纯洁,马建华..郑州市典型城市土壤剖面Zn、Ni分布特征分析[J].四川师范大学学报（自然科学版）,2012,35(3):418-424,7.基金项目
国家林业公益性行业科研专项基金(201004044)资助项目 （201004044）
