汶川地震极重灾区破坏山体对土壤理化性质影响调查研究

Hilly Vegetation Damage of the Soil Physical and Chemical Properties in the Severest Disaster Area after Wenchuan Earthquake

采用野外调查和室内分析相结合的方法研究了汶川地震极重灾区因滑坡、泥石流引起的受损土壤含水量、总孔隙度和主要养分的变化。结果表明,受损土壤含水量和土壤孔隙度降低,土壤氮素、磷素、速效钾和有机质含量明显低于未受损的土壤,土壤全钾含量变化不大。

using the methods of field investigation and indoor analysis,this article studied change of soil moisture content,total porosity and the change of main nutrients caused by landslides and debris flow in the severest disaster area after Wenchuan Earthquake. The results showed that in the damaged wasteland,the soil moisture content and total porosity were reduced; soil total N and available N content,total P and available P content,available K content and the organic matter content were significantly lower than the unspoiled mountain land; the total K content of soil did not change very much.