| 汞和镉对土壤脲酶活性影响 |
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| 引用本文： | 和文祥,黄英锋,朱铭莪,张一平.汞和镉对土壤脲酶活性影响[J].土壤学报,2002,39(3):412-420. |
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| 作者姓名： | 和文祥 黄英锋 朱铭莪 张一平 |
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| 作者单位： | 西北农林科技大学资源与环境科学系,杨凌,陕西,712100 |
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| 基金项目： | 国家自然科学基金资助项目(批准号 39370148) |
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| 摘 要： | 研究结果表明 ,汞、镉对土壤脲酶活性具有显著的抑制作用 ,抑制幅度和强度分别以汞镉和汞为最大 ;相关分析显示 ,脲酶活性可作为土壤Hg及Hg Cd污染程度的生化监测指标 ;当Hg、Cd含量分别达到 1 6 1 3～ 2 6 4 7mgkg- 1 和 477 78mgkg- 1 时 ,土壤已受到严重污染 ;在汞镉复合条件下 ,抑制仍以单独影响为主 ,且汞、镉间存在较弱的拮抗作用 ;温度和尿素浓度升高 ,可增强重金属对土壤脲酶活性的抑制作用。
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| 关 键 词： | 土壤脲酶 汞 镉 |
| 收稿时间： | 4/6/2000 12:00:00 AM |
| 修稿时间： | 2000年4月6日 |
EFFECT OF Hg AND Cd ON SOIL UREASE ACTIVITY |
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| He Wen-xiang,Huang Ying-feng,Zhu Ming-e and Zhang Yi-ping.EFFECT OF Hg AND Cd ON SOIL UREASE ACTIVITY[J].Acta Pedologica Sinica,2002,39(3):412-420. |
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| Authors: | He Wen-xiang Huang Ying-feng Zhu Ming-e and Zhang Yi-ping |
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| Affiliation: | Department of Resource and Environmental Science, Northwestern Sci Tech University of Agriculture & Forestry, Yangling, Shaanxi 712100, China;Department of Resource and Environmental Science, Northwestern Sci Tech University of Agriculture & Forestry, Yangling, Shaanxi 712100, China;Department of Resource and Environmental Science, Northwestern Sci Tech University of Agriculture & Forestry, Yangling, Shaanxi 712100, China;Department of Resource and Environmental Science, Northwestern Sci Tech University of Agriculture & Forestry, Yangling, Shaanxi 712100, China |
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| Abstract: | The study shows that Hg and Cd had a remarkable inhibitory effect on soil urease activity, with Hg+Cd and Hg being the most in extent and intensity, respectively.Urease activity can be an index of Hg or Hg+Cd pollution of soil.The soils were polluted severely when the contents of Hg and Cd in the soil reached 1.613~2.647mg kg-1 and 481.09mg kg-1 respectively.In the case of Hg+Cd, the inhibition effect was mainly determined by either of the two elements.Hg and Cd showed weak antagonism in multiple treatments.T emperature and urea concentrat ion could enhance heavy metals' inhibition effect on urease activity. |
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| Keywords: | Soil urease Mercury Cadmium |
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