冶炼厂污灌区土壤铜和锌污染与土壤酶活性

应用生态学报

冶炼厂污灌区土壤铜和锌污染与土壤酶活性

王广林^1,2；王立龙¹；王育鹏¹；刘登义¹

¹安徽师范大学生命科学院,芜湖 241000;²皖西学院生物系,六安 237000

收稿日期:2004-04-22 修回日期:2004-08-25 出版日期:2005-02-18

Cu and Zn pollution and soil enzyme activities in sewage irrigation area near smeltery

WANG Guanglin^1,2,WANG Lilong¹,WANG Yupeng¹,LIU Dengyi¹

¹College of Life Science,Anhui Normal University,Wuhu 241000,China; ²Department of Biology,West Anhui University,Lu'an 237000,China

Received:2004-04-22 Revised:2004-08-25 Online:2005-02-18

摘要/Abstract

摘要： 通过对冶炼厂污灌区土壤和水稻中Cu、Zn含量分析以及土壤酶活性的测定,研究了距冶炼厂不同距离土壤Cu、Zn含量状况、水稻对它们的吸收和分配以及土壤酶活性的变化.结果表明，冶炼厂造成了周围农田土壤的Cu、Zn污染,其中Cu污染较严重,距离冶炼厂100 m处的全量和提取态Cu分别为182.45和81.91 mg·kg^-1,是对照的10³和35倍.污灌区水稻各器官Cu、Zn的分布规律是，Cu:根>茎叶>米；Zn:茎叶>根>米.Zn在水稻体内的移动能力大于Cu,Cu主要累积在水稻根部,根可作为一种屏障阻碍Cu向地上部分迁移,使地上部分免受其害.水稻茎叶Cu含量和土壤中Cu的浓度密切相关.对蔗糖酶、过氧化氢酶和脲酶活性测定表明，脲酶活性变化最显著,其活性与土壤中Cu的浓度显著相关,建议用脲酶活性作为污灌区Cu污染指标.

关键词: SARS, 冠状病毒, 基因重组, 生命进化, 复合污染

Abstract: This paper studied the Cu and Zn status in soil and rice plant as well as the soil enzyme activities in the sewage irrigation area near a smeltery.The results showed that the soils near the smeltery were polluted.The soil total and extractable Cu contents at the distance of 100 m were 182.45 and 81.91 mg·kg^-1,respectively,9.3 and 34 times higher than the control.The Cu concentration in different parts of rice was in order of root>leaf and stem> grain,while the Zn concentration was in order of leaf and stem>root>grain.Zn was more mobile than Cu which was likely to accumulate in rice root.It was considered that root could act as a barrier which retarded the upwards transport of Cu and protected the above ground parts of rice from toxication. The Cu contents of rice stem and leaf had a significant correlation with soil Cu contents in the sewage irrigation area.Among the three test enzymes,urease was the most sensitive one to Cu,and its activity had a significant correlation with soil Cu content.Therefore,it is feasible to use soil urease activity as an indicator of soil Cu pollution in sewage irrigation area near the smeltery.

Key words: SARS, Coronavirus, Gene recombination, Life evolution, Combined pollution

王广林^1,2；王立龙¹；王育鹏¹；刘登义¹. 冶炼厂污灌区土壤铜和锌污染与土壤酶活性[J]. 应用生态学报.

WANG Guanglin^1,2,WANG Lilong¹,WANG Yupeng¹,LIU Dengyi¹ . Cu and Zn pollution and soil enzyme activities in sewage irrigation area near smeltery[J]. Chinese Journal of Applied Ecology.

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