The Research About Daxing'anling Of A Large Quantity Elements Content And Distribution In Seasonal Permafrost

Through chemical analysis,to DaXing'anling nine elements and organic matter and pH value of seasonal permafrost is:To surveying the content of N,S,K,Na,Ca,Mg,Al,Si,Fe,organic matter and the scope of pH value.Give the content and distribution of elements in seasonal permafrost by statistical analysis;Compare distribution and differences with elements at different layer (0cm～10cm,10cm～20cm,20cm～40cm,40cm～80cm),different ecosystems(original wetlands,primeval forest,gradually deforest),different aspect(sunny slope,shade slope),different slope position(on slope,in slope,under slope).And compare the content of elements in soil with World,China,Inner Mongolia.The result indicated:the content of S is 0.00%～0.07%,the content of SiO2 is 53.51%～67.10%,the content of Al₂O₃ is 12.52%～16.89%,the content of Fe₂O₃ is 4.50%～7.73,the content of CaO is 0.82%～2.33%,the content of MgO is 0.88%～2.02%,the content of K₂O is 2.00%～3.02%,the content of Na₂O_is 1.25%～2.46%,the content of N is 1.29g/kg～5.14g/kg,the content of organic matter is 27.71g/kg～170.14g/kg,the content of pH value is 4.86～6.34.The content of Al₂O₃,Fe₂O₃,SiO2,K₂O,MgO,Na₂O in three ecosystems seasonal permafrost gradually increases from surface layer to under,the content of S,N,CaO and organic matter in three ecosystems seasonal permafrost gradually decreases from surface layer to under.Looked from the coefficient of enrichment:The performance of SiO₂,Al₂O₃,Fe₂O₃,CaO,K₂O,Na₂O,N in seasonal permafrost close to standard,The performance of S in soil remarkable is barren,in soil the organic matter performance concentration.