摘要
选取3个典型林分类型,即落叶松林、水曲柳林、落叶松和水曲柳混交林,测定不同林分类型土壤化学性质、生态化学计量比、磷组分,分析各土壤化学性质及各磷组分含量之间的相关性。结果表明:相同深度土层中混交林土壤养分含量显著高于水曲柳林、落叶松林,土壤养分含量与土壤磷组分含量呈正相关。不同林分类型C/P、N/P均表现为土层深度0~20 cm高于20~40 cm,而C/N则相反。表层磷组分含量显著高于下层土壤,混交林土壤中的活性磷、中等活性磷和稳定性磷含量均高于水曲柳林、落叶松林。有机磷组分方面,中等活性磷NaOH-Po和活性磷NaHCO 3-Po在0~20 cm土层中的含量均高于20~40 cm土层。无机磷组分方面,稳定性磷D.HCl-Pi含量最高。
Three typical foreat types,namely Larix gmelinii forest(L),Fraxinus mandshurica forest(S),and mixed forest of Larix gmelinii and Fraxinus mandshurica(SL),were selected to determine the soil chemical property,the ecological stoichiometric ratio,and the phosphorus fraction.The correlations of soil chemical properties and contents of phosphorus fractions were analyzed.The results showed that the nutrient content in the soil layer with the same depth in the mixed forest was significantly higher than that in Fraxinus mandshurica forest and Larix gmelinii forest.The content of soil nutrients were positively correlated with the content of soil phosphorus fractions.In different types of forests,C/P and N/P ratios in the soil layer with the depth of 0-20 cm were higher than those in the soil layer with the depth of 20-40 cm,while C/N ratio showed the opposite trend.The content of phosphorus fractions in the surface soil was significantly higher than that in the subsoil.The contents of labile phosphorus,moderately labile phosphorus and stable phosphorus in the soil in the mixed forest were higher than those in Fraxinus mandshurica forest and Larix gmelinii forest.For organic phosphorus fractions,the contents of moderately labile phosphorus NaOH-Po and labile phosphorus NaHCO 3-Po in the soil with the depth of 0-20 cm were higher than those in the soil with the depth of 20-40 cm.For inorganic phosphorus fractions,the content of stable phosphorus D.HCl-P was the highest.
作者
范文泽
张国财
李津
李思怡
姚长缨
辛士峰
FAN Wenze;ZHANG Guocai;LI Jin;LI Siyi;YAO Changying;XIN Shifeng(Heilongjiang University,Harbin 150040,China;Northeast Forestry University,Harbin 150040,China;Honghua’erji Forestry Bureau of Hulunbuir City,Hulunbuir 021112,China;Gulian Forest Farm of Mohe County in Heilongjiang Province,Daxing’anling 165308,China)
出处
《吉林林业科技》
2024年第6期13-20,共8页
Journal of Jilin Forestry Science and Technology
基金
中央财政林业科技推广示范项目(黑[2023]TG21号)
内蒙古大兴安岭重点国有林管理局林业科技项目(2018003)。
关键词
暗棕壤
林型
土壤养分
磷组分
化学计量比
dark brown soil
forest type
soil nutrient
phosphorus fraction
stoichiometric ratio
