Evaluation of soil environmental capacity under different land use patterns
The soil environmental capacity of pollutants in development land is complicated due to complex land use patterns and the need of protect diverse target receptors including human health,groundwater and soil organisms,with limited related studies.This paper classified different land use patterns of development land from the perspective of soil function and environmental risk to these receptors.Evaluation methods of soil environmental thresholds and soil environmental capacity were established based on the different sensitive receptors under different land use patterns.On this basis,using Cd as model pollutant,the soil environmental capacity under different land use patterns in red soil region of China was calculated,and the evaluation method of site soil environmental capacity was further verified.The calculated soil Cd environmental capacity of park land,residential land,industrial and mining land and commercial service land were 11.68kg/hm2,28.89kg/hm2,40.84kg/hm2 and 40.84kg/hm2,respectively.This study provided baseline methods and cases for the assessment of soil environmental thresholds and environmental capacity of development land based on protecting different sensitive receptors,providing a scientific foundation for the evaluation of regional soil environmental capacity for development land,which was of great significance for improving the soil environmental management pratice of development land in China.
site soilland use patternscadmiumsoil environment thresholdsoil environmental capacity
万方数据
维普
