| 土壤-植物系统中模拟酸雨与Cd复合污染的短期环境效应--黄豆盆栽试验 |
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| 引用本文： | 曾敏,廖柏寒,曾清如,张永,罗承辉,王开峰,铁柏清.土壤-植物系统中模拟酸雨与Cd复合污染的短期环境效应--黄豆盆栽试验[J].环境科学学报,2005,25(12):1687-1692. |
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| 作者姓名： | 曾敏 廖柏寒 曾清如 张永 罗承辉 王开峰 铁柏清 |
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| 作者单位： | 湖南农业大学生物科学技术学院,长沙,410128;中南林学院资源与环境学院,长沙,410004;湖南农业大学资源环境学院,长沙,410128 |
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| 基金项目： | 教育部科学技术研究重点项目（No.[2000]156-00209）;湖南农业大学科技创新基金（No.04PT02） |
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| 摘 要： | 通过盆栽实验,研究了在黄豆(Glycne max)的一个生长周期内,模拟酸雨与Cd复合污染对土壤基本性质的影响,模拟酸雨作用下土壤-植物系统中Cd的迁移转化规律以及模拟酸雨与Cd复合污染对黄豆生长与生理特性的影响,探讨了土壤-植物系统中这种复合污染的短期环境效应.结果表明,短期内模拟酸雨和Cd污染对土壤-植物系统都有致害作用,但Cd污染的效应大于模拟酸雨的效应,模拟酸雨与Cd复合污染环境效应大于这2种污染物的单因素效应,且表现出明显的协同作用.在本试验条件下,pH值为3.5的模拟酸雨和20 mg·kg-1Cd的处理组合对土壤-植物系统的危害最严重.尽管在短期内,协同作用仅在土壤交换态Cd含量、黄豆茎和根中的Cd含量这3项指标上得到一定程度的体现,但这种复合污染的化学机制和环境效应值得关注,这2种污染物长时期共同作用对土壤-植物系统的影响也值得深入研究.
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| 关 键 词： | 土壤-植物系统 黄豆 模拟酸雨 Cd 复合污染 环境效应 |
| 文章编号： | 0253-2468(2005)12-1687-06 |
| 收稿时间： | 03 25 2005 12:00AM |
| 修稿时间： | 09 26 2005 12:00AM |
Short-term environmental effects of complex pollution of simulated acid rain and Cd on soil-plant systems-a case study of the pot experiment with Glycine max plants |
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| Zeng Min,Liao Bohan,Zeng Qingru,Zhang Yong,Luo Chenghui,Wang Kaifeng and Tie Boqing.Short-term environmental effects of complex pollution of simulated acid rain and Cd on soil-plant systems-a case study of the pot experiment with Glycine max plants[J].Acta Scientiae Circumstantiae,2005,25(12):1687-1692. |
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| Authors: | Zeng Min Liao Bohan Zeng Qingru Zhang Yong Luo Chenghui Wang Kaifeng and Tie Boqing |
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| Institution: | College of Biological Science and Technology, Hunan Agricultural University, Changsha 410128,College of Resources and Environment, Central South Forestry University, Changsha 410004,College of Resources and Environment, Hunan Agricultural University, Changsha 410128,College of Biological Science and Technology, Hunan Agricultural University, Changsha 410128,College of Resources and Environment, Hunan Agricultural University, Changsha 410128,College of Resources and Environment, Hunan Agricultural University, Changsha 410128 and College of Resources and Environment, Hunan Agricultural University, Changsha 410128 |
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| Abstract: | A pot experiment was conducted to study complex effects of simulated acid rain and Cd on soil properties, chemical behaviors of Cd, growth and physiological characteristics of Glycine max plants in a growth cycle. The results indicated that, in a short period, both simulated acid rain and Cd were harmful to soil plant systems, effects of Cd were more remarkable than those of acid rain, effects of complex pollution on soil-plant systems were more significant than simplex effects of simulated acid rain or Cd, and synergistic effects could be observed. In this experiment, toxic effects of the combination of simulated acid rain with pH 3.5 and Cd of 20mg?kg-1 on soil-plant systems were the most serious. Although the synergistic effects, in a short period, exhibited merely in a few indexes such as Cd contents in soil exchangeable pool and in Glycine max stems and roots, chemical mechanisms and complex effects of acid rain and soil Cd are worthy of attention, and the long-term effects of the complex pollution need further studies. |
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| Keywords: | soil-plant system Glycine max simulated acid rain Cd complex pollution environmental effect |
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