摘要
在多目标区域地球化学调查结果的基础上,分析了长江三角洲地区土壤Cd的分布特征,并对其富集成因进行探讨,初步评价了生态效应。结果显示:长江三角洲地区土壤Cd主要富集于沿江一带和城市区;冲积层物质所带的Cd是沿江富集的主要原因,工业降尘等人类活动是Cd富集的另一重要来源;农作物中Cd的含量与土壤中Cd的含量没有明显相关性,而与土壤pH值相关性显著;不同作物对Cd的吸收能力显著不同。
On the basis of the result of multitarget geochemical survey, distribution characters of soil Cd in Yangtze River delta was analyzed. Enrichment causations were discussed and theecological effect was preliminaryly evaluated. Result showed that the enrichment of soil Cd in Yangtze River delta was mainly in areas along the river and urban area. The main enrichment causation in areas along the river was Cd carried by alluvium matters. Human activites such as industrial dust fall were another impotrant causation of Cd enrichment. There was no significant correlation between Cd content in crops and that in soil. However, signicicant correlation occurred between crop Cd content and pH value. Different crops showed significant differences in Cd absorbency.
出处
《安徽农业科学》
CAS
北大核心
2008年第5期1986-1988,1998,共4页
Journal of Anhui Agricultural Sciences
基金
国家专项调查工作项目(GZTR20060202)
江苏省自然科学基金项目(BK2007006)
关键词
土壤CD
分布特征
生态效应
长江三角洲
Soil Cd
Distribution characters
Ecological effect
Yangtze River Delta
