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《Acta Scientiae Circumstantiae》 1987-04
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EFFECTS OF As AND Pb ON THE ENZYMATIC ACTIVITIES IN SOILS

He Nianzu, Shi Jianhua, Lin Yusheng (Dept. of Soil and Agrochem., Zhejian Agricultural University)  
The contents of a number of heavy metals and the enzymatic acitvivties in paddy soils in Yinshang area were investigated. The results revealed that the soils have been polluted with As and Pb and the contents of As and Pb in surface soils were ranged from 161.2 to 4452.6 mg/kg and 50.9 to 374.1 mg/kg respectively. The two pollutants showed a similar distribution pattern in soil profiles. It was found that the activities of dehydrogenase, catalase, peroxidase, invertase, urease and phosphatase were significantly correlated to the soil contents of As and Pb and the activities of catalase, invertase and dehydrogenase in soils might be indicators for As and Pb contamination.
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