| 土壤重金属与酶活性沿城乡梯度的分布 |
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| 引用本文： | 娄翼来,李琪,孟凡祥,姜思维,梁文举.土壤重金属与酶活性沿城乡梯度的分布[J].辽宁工程技术大学学报(自然科学版),2010,29(1). |
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| 作者姓名： | 娄翼来 李琪 孟凡祥 姜思维 梁文举 |
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| 作者单位： | 1. 中国科学院,沈阳应用生态研究所,辽宁,沈阳,110016;中国科学院,研究生院,北京,100049
2. 中国科学院,沈阳应用生态研究所,辽宁,沈阳,110016 |
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| 基金项目： | 国家自然科学基金资助项目(30600087);;中国科学院院长奖获得者科研启动专项资金资助项目(07YZX911YY) |
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| 摘 要： | 以沈阳南部沿城乡梯度的3个代表性样区土壤为对象,研究了表层土壤的重金属与酶活性的变化及关系,为土地城市化利用下的重金属污染评价提供科学依据,亦为城市绿地和郊区农田的科学管理提供理论指导。研究结果表明,沿城乡梯度土壤重金属铜、锌、铅的全量及有效量总体呈递减趋势,内梅罗指数法评价结果显示,土壤重金属的单项及综合污染程度均表现城区高于郊区高于农村;土壤的蔗糖酶、脲酶和过氧化氢酶活性则均表现出相反的变化趋势,表明其对重金属胁迫的可能响应。相关分析表明,城市化条件下土壤的蔗糖酶、脲酶和过氧化氢酶活性可以作为土壤铜、锌、铅污染的评价指标。
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| 关 键 词： | 重金属污染 土壤酶活性 城乡梯度 城市化 |
Distribution of soil heavy metals and enzyme activities along an urban-rural gradient |
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| LOU Yilai,LI Qi,MENG Fanxiang,JIANG Siwei,LIANG Wenju.Distribution of soil heavy metals and enzyme activities along an urban-rural gradient[J].Journal of Liaoning Technical University (Natural Science Edition),2010,29(1). |
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| Authors: | LOU Yilai LI Qi MENG Fanxiang JIANG Siwei LIANG Wenju |
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| Institution: | 1. Institute of Applied Ecology;Chinese Academy of Sciences;Shenyang 110016;China;2. Graduate University;Beijing 100049;China |
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| Abstract: | In order to provide a scientific basis for assessing soil heavy metal pollution under urbanization,soil heavy metals and enzyme activities distribution and relationship between them in three selected sites along an urban-rural gradient were investigated in southern Shenyang,northeastern China in this study. It will be significant for preventing or controlling heavy metal pollution in soils of urban green lands and suburban farmlands. The results show that both total and available concentrations of Cu,Zn and... |
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| Keywords: | heavy metal pollution soil enzyme activity urban-rural gradient urbanization |
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