高秀丽;邢维芹;冉永亮;周卫东;李立平;

• 1:河南工业大学化学化工学院

摘要(Abstract)：

研究了华北平原某铅冶炼厂附近农田33个土壤样品中重金属积累对土壤酶活性的影响。结果表明,样品中Pb和Cd全量的平均值分别为144和5.59mg·kg-1,DTPA态Pb和Cd含量平均值分别为54.1和0.964mg·kg-1,均超过了未污染农田潮土的正常范围,而Cu、Ni和Zn的有效性和全量与未污染土壤接近;土壤过氧化氢酶活性与DTPA态Pb和Cd含量、全Pb含量均呈显著的负线性关系(P<0.01);与磷酸酶和脲酶相比,土壤脱氢酶活性更易受到土壤中Pb和Cd积累的影响;随DTPA-Ni含量增加,土壤蛋白酶和碱性磷酸酶活性增加(P<0.1);土壤脲酶活性与重金属全量或有效态重金属含量无显著相关性(P>0.1)。以上结果说明,利用土壤过氧化氢酶和脱氢酶活性能够表征基本性质较为一致的土壤中重金属污染程度;与重金属全量相比,有效态重金属对土壤酶活性影响更大。

关键词(KeyWords)： 酶活性;土壤;重金属;积累;农田;铅冶炼

Abstract:

Keywords:

基金项目(Foundation): 河南省教育厅自然科学研究计划项目(2011A610006)

作者(Author): 高秀丽;邢维芹;冉永亮;周卫东;李立平;

Email:

DOI:

参考文献(References)：

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