大兴安岭寒温带森林演替过程中土壤碳氮磷含量及生态化学计量特征  

Soil Carbon,Nitrogen,and Phosphorus Content and Ecological Stoichiometric Characteristics During Forest Succession in the Cold Temperate Zone of the Greater Khingan Mountains

作　　者：梁雨欣 夏炎 满秀玲[1] 蔡体久[1] LIANG Yuxin;XIA Yan;MAN Xiuling;CAI Tijiu(College of Forestry,Northeast Forestry University,Harbin 150040;Heilongjiang Forestry and Grassland Survey and Planning Institute,Harbin 150008)

机构地区：[1]东北林业大学林学院,哈尔滨150040 [2]黑龙江省林业和草原调查规划院,哈尔滨150008

出　　处：《林业勘查设计》2024年第2期76-83,共8页Forest Investigation Design

摘　　要：通过研究森林演替过程中土壤碳氮磷含量的变化特征及其化学计量比,分析在0~200 cm土层中,不同演替阶段土壤有机碳氮磷含量的变化情况。选择黑龙江漠河森林生态系统国家级定位观测研究站森林演替过程中3个典型阶段的代表群落,即兴安落叶松林、落叶松-白桦混交林和白桦林为研究对象,分别对其碳氮磷含量分析。结果表明,在演替前期(白桦林)的土壤中,C含量范围为5.78~28.29 g/kg,N含量为0.243~1.232 g/kg,P含量为0.243~1.232 g/kg。演替中期(落叶松-白桦混交林)C含量为6.39~29.41g/kg,N含量为0.077~1.472 g/kg,P含量为0.41~1.374 g/kg。而在演替后期(兴安落叶松林)的土壤中,C含量范围为6.36~34.61g/kg,N含量范围为0.353~1.463 g/kg,P含量范围为0.353~1.463 g/kg。不同林型的土壤C、N、P化学计量比也存在差异。在0~90 cm土层中,前期的C∶N范围为4.15~11.13,后期为5.92~21.85,中期为5.58~23.24。在90~200 cm土层中,前期的C∶N范围为7.46~19.8,后期为4.56~13.09,中期为5.88~18.07。在50~200 cm土层中,前期的C∶P为4.02~9.11,后期为2.24~10.51,中期为3.32~10.76。在0~200 cm土层中,前期的N∶P范围为0.51~2.95,后期为0.28~1.61,中期为0.36~2.13。通过分析显示,森林演替过程中土壤碳氮磷含量及其化学计量比存在一定的变化规律,了解这些变化规律有助于更好地评估森林生态系统营养循环和土壤质量的变化,为森林管理和保护提供科学依据。By studying the changes in soil carbon,nitrogen,and phosphorus content during forest succession and their stoichiometric ratios,this study analyzes the changes in soil organic carbon,nitrogen,and phosphorus content at different succession stages in a 0-200 cm soil layer.The representative communities of three typical stages in the forest succession process at the National Positioning Observation and Research Station of the Mohe Forest Ecosystem in Heilongjiang Province,namely the Xing′an Larch Forest,the Larch Birch Mixed Forest,and the Birch Forest,were selected as the research objects,and their carbon,nitrogen,and phosphorus contents were analyzed separately.The results are as follows,In the early stage of succession(Betula platyphylla forest),the range of C content is 5.78-28.29 g/kg,N content is 0.243-1.232 g/kg,and P content is 0.243-1.232 g/kg.In the middle stage of succession(mixed larch birch forest),the C content is 6.39-29.41 g/kg,the N content is 0.077-1.472 g/kg,and the P content is 0.41-1.374 g/kg.In the late stage of succession(Xing′an larch forest),the soil has a C content range of 6.36-34.61 g/kg,N content range of 0.353-1.463 g/kg,and P content range of 0.353-1.463 g/kg.There are also differences in the stoichiometric ratios of soil C,N,and P among different forest types.In the 0-90 cm soil layer,the C∶N range in the early stage is 4.15-11.13,in the later stage it is 5.92-21.85,and in the middle stage it is 5.58-23.24.In the 90-200 cm soil layer,the C∶N range in the early stage is 7.46-19.8,in the later stage it is 4.56-13.09,and in the middle stage it is 5.88-18.07.In the 50-200 cm soil layer,the C∶P in the early stage is 4.02-9.11,in the later stage it is 2.24-10.51,and in the middle stage it is 3.32-10.76.In the 0-200 cm soil layer,the N∶P range in the early stage is 0.51-2.95,in the later stage it is 0.28-1.61,and in the middle stage it is 0.36-2.13.Through analysis,it is shown that there are certain changes in soil carbon,nitrogen,and phosphorus content and their stoichiometric r

关 键 词：碳氮磷 土壤养分 化学计量比 寒温带森林地区 大兴安岭 

分 类 号：S717.16[农业科学—林学] S714.5