| 保定市污灌区土壤的Pb、Cd污染与土壤酶活性关系研究 |
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| 引用本文： | 刘树庆.保定市污灌区土壤的Pb、Cd污染与土壤酶活性关系研究[J].土壤学报,1996,33(2):175-182. |
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| 作者姓名： | 刘树庆 |
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| 作者单位： | 河北农业大学, 保定 071001 |
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| 基金项目： | *河北省科委及省自然科学基金 |
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| 摘 要： | 本文应用一元线性与非线性回归事寻优模型，着重研究了保定市污灌区土壤重金Ｐｂ、Ｃｄ污染与土壤酶活性之间的关系。结果表明，污灌区土壤Ｐｂ、Ｃｄ含量比清灌区有明显的增加，且均高于国内外重点城市的土壤背景值，已接近或达到轻度污染程度。
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| 关 键 词： | 土壤酶活性 污灌 重金属污染 保定市 |
| 收稿时间： | 1995/5/26 0:00:00 |
RELATIONSHIP BETWEEN SOIL Pb AND Cd POLLUTION AND ENZYME ACTIVITIES IN WASTEW ATER IRRIGATED AREA OF BAODING CITY |
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| Liu Shuqing.RELATIONSHIP BETWEEN SOIL Pb AND Cd POLLUTION AND ENZYME ACTIVITIES IN WASTEW ATER IRRIGATED AREA OF BAODING CITY[J].Acta Pedologica Sinica,1996,33(2):175-182. |
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| Authors: | Liu Shuqing |
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| Institution: | Hebei Agricultural University, Baoding 071001 |
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| Abstract: | This paper deals maiilly with the relationship between Pb and Cd pollution and enayme activities of soil in wastewater irrigated area of Banding city.The results show that the contents of Pb and Cd in soils of wastewater irrigated area were higher than those in soils irrigated with fresh water and exceeded the standards of soil background values for some cities at home and abroad,and the contents of Pb and Cd in soils of wastewater irrigated area approched or reached the lightly polluted levels.There appeared a close relationship between heavy metal pollution and enzyme activity.The soil unease and catalase activities decreased evidently with increasing contents of Pb and Cd.According to the regressive fitting results there existed a very significant exponential negative correlation between soil unease and catalase activities and Pb and Cd contents with the maximum r2 model equation of y=axe-bx band the correlation coefficients (r) of -0.804**,-0.795** and -0.899**,-0.852**,respectively.It is feasible to use soil unease and catalase activities as primary biochemical indexes to evaluate Pb nd Cd pollution in soils of the wastewater irrigated area. |
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| Keywords: | Soil enzyme activity Heavy metal pollution Wastewater irrigation |
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