干旱区生态环境知识资源中心(Arid): 单一与复合胁迫下油菜对镉、铅的吸收效应

Arid

	单一与复合胁迫下油菜对镉、铅的吸收效应
其他题名	Uptake Effect of Cd and Pb by Rape Under Single Cd/Pb and Cd-Pb Combined Stress
	武文飞; 南忠仁; 王胜利; 赵转军; 周婷
来源期刊	环境科学
ISSN	0250-3301
出版年	2012
卷号	33 期号:9 页码:3253-3260
中文摘要	以干旱区绿洲灰漠土为供试土壤,油菜(Brassica campestris L.)为供试植物,通过盆栽试验研究了Cd/Pb单一和复合胁迫下其在油菜体内的吸收和富集特征,并解析了油菜条件下Cd、Pb的交互作用.结果表明,Cd/Pb单一和复合胁迫下油菜体内Cd、Pb的含量均随着其胁迫浓度的增大而增大,但复合胁迫下油菜对Cd、Pb的吸收互为拮抗作用(Cd最大胁迫浓度<7mg.kg~(-1),Pb最大胁迫浓度<1 500 mg.kg~(-1));Cd单一胁迫下油菜对其富集能力和其在油菜体内的迁移能力均随着其胁迫浓度的增加呈现先增大后减小的趋势,Pb单一胁迫下油菜对其富集能力和其在油菜体内的迁移能力则均随着其胁迫浓度的增加而持续减小;复合胁迫降低了油菜对Cd、Pb的富集能力和Pb在油菜体内的迁移能力,但提高了Cd在油菜体内的迁移能力;油菜对Cd的吸收能力和其在油菜体内的迁移能力均远远大于Pb;油菜对重金属Cd、Pb的吸收和迁移模式均符合二次方程.
英文摘要	This paper investigated the effects of single Cd/Pb and Cd-Pb combined pollution of desert grey soils from the oasis regions on the uptake and translocation of Cd and Pb by rape(Brassica campestris L.),and analyzed the interaction between Cd and Pb.The results of pot experiment showed that the concentration of Cd or Pb was promoted when the concentration of Cd in soil was less than 7.0 mg·kg~(-1) and the concentration of Pb in soil was less than 1 500 mg·kg~(-1) in single Cd/Pb and Cd-Pb combined pollution.There was an obvious antagonism between Cd and Pb in Cd-Pb combined pollution.As the concentration of Cd in soil increased in single Cd pollution,the enrichment and translocation ability of Cd in rape was firstly improved and then reduced.As the concentration of Pb in soil increased in single Pb pollution,the enrichment and translocation ability of Pb in rape was reduced continuously.The Cd-Pb combined stress reduced the enrichment capacity of Cd and Pb as well as the migration ability of Pb,but improved the migration ability of Cd.The enrichment and translocation ability of Cd was greater than that of Pb.Models of uptake and translocation of Cd and Pb in rape under single Cd/Pb and Cd-Pb combined stress were both well fitted to quadratic equations.
中文关键词	镉 ; 铅 ; 拮抗 ; 富集 ; 迁移
英文关键词	Cd Pb antagonism enrichment translocation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:4612693
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228251
作者单位	兰州大学资源环境学院, 西部环境教育部重点实验室, 兰州, 甘肃 730000, 中国
推荐引用方式 GB/T 7714	武文飞,南忠仁,王胜利,等. 单一与复合胁迫下油菜对镉、铅的吸收效应[J]. 兰州大学,2012,33(9):3253-3260.
APA	武文飞,南忠仁,王胜利,赵转军,&周婷.(2012).单一与复合胁迫下油菜对镉、铅的吸收效应.环境科学,33(9),3253-3260.
MLA	武文飞,et al."单一与复合胁迫下油菜对镉、铅的吸收效应".环境科学 33.9(2012):3253-3260.