Distribution characteristics of organic carbon in reclaimed soil aggregates in coal-mining subsidence land
With the rapid development of coal mining industry,natural resources are being diminished rapidly,and the ecological environment is suffering unprecedented damage.Land reclamation is a very urgent need for restoration of the soil environment.In this experiment,the soils in three reclamation models and control in Shendong mining area were taken as the research object,and the percentage of soil aggregates and the content of organic carbon were studied by collecting soil samples from different reclamation areas.The composition of aggre-gates＞0.25 mm was more than that of other particles.The content of aggregates＞0.25mm in plantation of Xanthoceras sorbifolia Bunge was the most,and that in plantation of Prunus pedunculata Pall was the least.With the decrease of soil particle size,the content of water-stable aggregates in each particle size increased firstly and then decreased in all reclamation patterns.Compared with the control,the organic carbon in soil mechanical stability and water stability aggregates increased in all reclamation models,and the largest increase was found in the Cerasus humilis(Bge.)Sok reclamation model.The result reveals that the reasonable reclamation model is beneficial to increase the contents of water-stable aggregates and soil organic carbon.
万方数据
维普
