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应用生态学报 ›› 1997, Vol. 8 ›› Issue (5): 545-552.

• 研究论文 • 上一篇    下一篇

重金属复合污染对土壤植物系统的生态效应Ⅱ.对作物、苜蓿、树木吸收元素的影响

吴燕玉1, 王新1, 梁仁禄1, 吴铁铮1, 陈怀满2, 郑春荣2, 谢玉英3, 田秀芬3, 蓝中东3, 李惠英4, 陈素英4   

  1. 1. 中国科学院沈阳应用生态研究所,沈阳 110015;
    2. 中国科学院南京土壤研究所,南京 210008;
    3. 中国科学院新疆生物土壤沙漠研究所,乌鲁木齐 830011;
    4. 中国科学院石家庄农业现化研究所,石家庄 050021
  • 收稿日期:1997-01-06 修回日期:1997-04-07 出版日期:1997-09-25 发布日期:1997-09-25
  • 基金资助:

    中国科学院“八五”重大项目(06-2-06);国家自然科学基金资助项目(39370150)

Ecological effect of compound pollution of heavy metals in soil plant system Ⅱ. Effect on element uptake by crops, alfalfa and tree

Wu Yanyu1, Wang Xin1, Liang Renlu1   

  1. Institute of Applied Ecology, Academia Sinica, Shenyang 110015
  • Received:1997-01-06 Revised:1997-04-07 Online:1997-09-25 Published:1997-09-25

摘要: 研究Cd、Pb、Cu、Zn、As 5元素复合污染对农作物、苜蓿、树木吸收元素的影响,供试污染物浓度以接近国内外土壤环境标准值作为高剂量处理,结果表明,5种元素间存在交互作用,可提高作物对Cd、Pb、Zn吸收系数,籽实超出粮食卫生标准的超标率在低剂量处理时Cd为16.6~42.85%,高剂量时达16.6~71.42%.苜蓿茎叶中Cd、Pb含量超出饲料卫生标准,树叶中含量也有所增加,在中、酸性土壤上尤甚.

关键词: 重金属, 复合污染, 生态效应, 水环境, 水质, 模型模拟, 河流, 生态工程

Abstract: Field experiment showed that because of the interaction among Cd, Pb, Cu, Zn and As, the absorption coefficient of Cd, Pb and Zn for crops was increased,and the exceeding percentage——the content of pollutant in seed, which exceeds the food health standard——was 16.6~42.85% in low dosage and 16.6~71.42% in high dosage treatment. The Cd and Pb contents in alfalfa stem and leaf exceeded the forage health standard, and the pollutant contents in tree were also increased in all treatments, which was even more serious in acid and neutral soils.

Key words: Heavy metal, Compound pollution, Ecological effect, water quality, river, model simulation, water environment, ecological engineering