不同强度石漠化生物治理的土壤响应分析

Analysis of Soil Response of Treatment of Biology in Various Strength Rocky Desertification

[目的]研究不同强度石漠化生物治理的土壤响应情况。[方法]以贵州铜仁地区敖寨小流域示范区为例,监测土壤温度、容重、pH、全氮、全磷、全钾和有机质含量等。[结果]不同深度土壤温度日较差均减小;土壤容重减小,孔隙度趋大,且这种变化与石漠化等级相关联;pH更接近7.0,酸碱度更趋中性;全氮、全磷和有机质含量变化呈现复杂性。[结论]石漠化生物治理措施改善了土壤性能。

[Objective]The research aimed to study the soil response of the treatmentof the biology in various strength rocky desertification.[Method] Taking the demonstration area of the small valley of Aozhai,Tongren Prefecture,Guizhou Province as an analyzed object,the temperature,the sulk density,pH,total nitrogen,total phosphorus,total potassiumand organic matter in the soil were measured.[Result] The relative daily difference of soil temperature in various depth decreased averagely.The unitweightof the soil decreased while the degree of porosity was larger and the change was related to the various levels of rocky desertification.pHwas closer to7.0 and the variations of pHwere tending neutral.The variations of the total nitrogen,total phosphorus and organic substance were complicated.[Conclusion] Treatmentof the biology in various strength rocky desertification could improve the soil properties.