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分析了太岳山7种典型森林群落土壤有机质和氮素的基本状况,结果表明:不同林型,土壤腐殖质层和淀积层有机质含量均是油松辽东栎混交林最高,分别为4.908g/kg和3.528g/kg;土壤腐殖质层有机质含量油松林最低,为3.959g/kg,淀积层有机质含量山杨林最低,为1.779g/kg;土壤腐殖质层全氮含量,白桦林最高,为0.368%,辽东栎林最低,为0.176%。;土壤腐殖质层速效氮含量华北落叶松林最高,为292.191mg/kg,油松林最低,为167.725mg/kg;土壤淀积层全氮含量油松林最高,为0.277%,油松辽东栎混交林最低,为0.094%;土壤淀积层速效氮含量山杨林最高为200.183mg/kg,油松辽东栎混交林最低,为49.151mg/kg;土壤有机质、全氮及速效氮含量均是上层土壤高于下层。腐殖质层和淀积层土壤有机质含量在各林型间差异均不显著(P>0.05),而全氮和速效氮含量在各林型间的差异均达到极显著水平(P<0.01)。
The basic conditions of soil organic matter and nitrogen in seven typical forest communities of Taiyue Mountain were analyzed. The results showed that the organic matter content of humus and sediment in different forest types were the highest in the mixed stands of Quercus liaotungensis and Quercus liaotungensis, respectively, 4.908g / kg And 3.528g / kg respectively. The content of organic matter in soil humus layer was the lowest (3.959g / kg), and the lowest content of organic matter in Populus euphratica forest was 1.779g / kg. The content of total nitrogen in soil humus layer was the highest %, The lowest in Quercus liaotungensis forest, 0.176%. ; The content of available nitrogen in soil humus layer was the highest in Larix principis-rupprechtii, 292.191mg / kg, and the lowest in Pinus tabulaeformis forest was 167.725mg / kg. The content of total nitrogen in soil layer was the highest (0.277%), the lowest in Pinus tabulaeformis and Quercus liaotungensis , Which was 0.094%. The available nitrogen content in soil layer was the highest as 200.183 mg / kg, and the lowest in Quercus liaotungensis was 49.151 mg / kg. The contents of soil organic matter, total nitrogen and available nitrogen were the highest in the upper soil In the lower. The content of soil organic matter in humus layer and sediment layer was not significantly different among all forest types (P> 0.05), but the difference of total nitrogen and available nitrogen in all forest types reached extremely significant level (P <0.01).