【摘要】 比较了兴安落叶松天然林和两种不同干扰类型兴安落叶松林(一次干扰林、二次干扰林)土壤pH值、土壤C和其它营养成分之间的差异。结果表明:兴安落叶松天然林土壤pH值高于其它两种类型森林土壤;C、N、P、K的含量均是干扰林低于天然林,且土壤0～10cm层高于土壤10～20cm层;土壤表层C:N、C:P的比值均是天然林低于干扰林,但C:K则相反。采伐干扰改变了大兴安岭北坡兴安落叶松林土壤pH值、C含量和其它养分含量。更多还原

【Abstract】 The differences of pH value, carbon and nutrients were compared in the soils under natural Larix gmelini forests changed into two types of disturbed forest systems(one time disturbed forest;two time disturbed forest ) by local logging disturbance.The results showed that the natural Larix gmelini forests had higher pH value than other two types of disturbed forest systems.Soil C, N, P, K concentrations at surface 0-10 cm soil of the natural Larix gmelini forests was higher than that in the disturbed forest systems, but it was not the case for the soil C concentration at 10-20cm depth soil.The ratios of C:N,C:P at surface soil generally were lower in natural Larix gmelini forests than those in other disturbed forest systems respectively, while the ratios of C:K were different.It could be concluded that logging disturbance could greatly affect soil pH value, soil C and other nutrient storage when the natural Larix gmelini forests were altered.更多还原