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| 污泥-铜尾矿体系下pH、盐分和重金属对大麦根伸长的生态毒性效应 | |
| 引用本文： | 李敏,骆永明,宋静,张殿顺.污泥-铜尾矿体系下pH、盐分和重金属对大麦根伸长的生态毒性效应[J].土壤,2006,38(5):578-583. |
| 作者姓名： | 李敏 骆永明 宋静 张殿顺 |
| 作者单位： | 1. 中国科学院南京土壤研究所土壤与环境生物修复研究中心,南京,210008;土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008;中国科学院研究生院,北京,100049 2. 中国科学院南京土壤研究所土壤与环境生物修复研究中心,南京,210008;土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008 3. 中国科学院南京土壤研究所土壤与环境生物修复研究中心,南京,210008;河北农业大学,河北,保定,071001 |
| 基金项目： | 中-荷战略科学联盟项目;国家自然科学基金;国家重点基础研究发展计划(973计划);中国科学院知识创新工程项目 |
| 摘 要： | 以无锡芦村污水处理厂的污泥为例,室内分析了污泥对铜陵、德兴铜尾矿的酸碱缓冲能力和田间持水能力的改善,并通过生态毒理试验初步评估了施用该种污泥复垦铜尾矿的可行性。试验表明,在污泥施用量为0、10、30、50、100、130、170、200g/kg时,铜陵尾矿上大麦根伸长随着污泥施用量的增加而受抑制,根长和盐分呈显著负相关关系。污泥与德兴酸性尾矿混合时,大麦根伸长呈先增后减的趋势,在污泥加入量为0~100g/kg时,根长随pH的升高和有效Cu的减少而增长,而在污泥加入量为100~200g/kg时,根长随盐分增加而受抑制;CaCl2提取的Cu随有机质增加而明显减少,CaCl2提取的Zn对pH变化比较敏感。 |
| 关 键 词： | 铜尾矿砂 重金属 污泥 根伸长 毒性 |
Ecotoxicological Effects of pH, Salinity and Heavy Metals on the Barley Root Elongation in Mixture of Copper Mine Tailings and Biosolids |
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| LI Min,LUO Yong-ming,SONG Jing and ZHANG Dian-Shun.Ecotoxicological Effects of pH, Salinity and Heavy Metals on the Barley Root Elongation in Mixture of Copper Mine Tailings and Biosolids[J].Soils,2006,38(5):578-583. | |
| Authors: | LI Min LUO Yong-ming SONG Jing and ZHANG Dian-Shun |
| Institution: | Soil and Environmental Bioremediation Research Centre, (Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China,Soil and Environmental Bioremediation Research Centre, (Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Graduate School of the Chinese Academy of Sciences, Beijing 100049, China,Soil and Environmental Bioremediation Research Centre, (Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China and Soil and Environmental Bioremediation Research Centre, (Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Hebei Agricultural University, Baoding, Hebei 071001, China |
| Abstract: | Using root elongation experiment of barley, the suitability of sewage sludge (biosolids) collected from Wuxi Wastewater Treatment Plant for revegetation of copper mine tailings was studied. The results showed that when the biosolids applied at 0 ~ 200 g/kg, the application of biosolids increased the acidity buffering and water holding capacity of the tailings. In the mixture of Tongling tailings and biosolids, the main factor that inhibited barley root elongation was salinity which increased as biosolids increased. In the mixture of Dexing tailings and biosolids, the pH and salinity were significantly correlated with biosolids application rates. The CaCl2-extracted Cu decreased as the organic matter increased. The CaCl2-extracted Zn was sensitive to pH change. When biosolids was applied at 0 ~ 100 g/kg, the root length increased with increasing of pH values and decreasing of Cu concentration. And when biosolids was at 10 ~ 200 g/kg, the root length was inhibited due to the high salinity. |
| Keywords: | Copper mine tailings Heavy metals Biosolids Root elongation Ecotoxicological effects |
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