Pedosphere 10(2): 117--124, 2000
ISSN 1002-0160/CN 32-1315/P
©2000 Soil Science Society of China
Published by Elsevier B.V. and Science Press
| Combined pollution and pollution index of heavy metals in red soil |
| CHEN Huai-Man, ZHENG Chun-Rong, WANG Shen-Qiang and TU Cong |
| Institute of Soil Science, the Chinese Academy of Sciences, P.O. Box 821, Nanjing 210008 (China) |
| ABSTRACT |
| A field experiment was conducted to study the effects of Pb, Cd, Cu, Zn and As coexisting in red soil on growth of rice (Oryza sativa L.), mung bean (Vigna rabiata (Linn.) Wilczek), alfalfa (Medicago sativa L.), slash pine (Pinus elliottii Engelm.) and aspen (Populus L.). Results showed that rice, mung bean and alfalfa were significantly influenced by combined pollution of the heavy metals. The contents of Pb, Cd and As in rice grains greatly exceeded the National Standards for Food Hygiene of China. Heavy metals at a high concentration seriously retarded growth of mung bean and alfalfa, but not so obviously with slash pine and aspen. The composite index is suggested for evaluating the relativity of combined pollution with heavy metals in soil. |
| Key Words: combined pollution, composite pollution index, plant growth, red soil |
| Citation: Chen, H. M., Zheng, C. R., Wang, S. Q. and Tu, C. 2000. Combined pollution and pollution index of heavy metals in red soil. Pedosphere. 10(2): 117-124. |
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