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| Affecting mechanism of soil and water conservation measures controlling nonpoint source pollution |
| Yang Aimin |
| Department of Water Resources,China Institute of Water Resources and Hydropower Research,100044,Beijing,China |
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Abstract Nonpoint source pollutants entering into soil or water body were generally divided into chemical fertilizers,pesticides and heavy metals,which were transported and transformed in soil or water body by way of plant absorption,soil colloid adsorption,microbe decomposition,runoff carry and volatilization etc.The promoting and restraining affects of soil and water conservation biological measures,engineering measures and agricultural technical measures on various moving and transforming ways of chemical fertilizers,pesticides and heavy metals were systematically opened out in order to provide scientific basis for rationally allocating soil and water conservation measures and effectively controlling nonpoint source contamination.
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Received: 12 April 2007
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