长白山地土壤碳、氮、磷含量及生态化学计量垂直特征  

Vertical characteristics of soil carbon,nitrogen and phosphorus contents and ecological stoichiometry in the Changbai Mountains

作　　者：张一帆 武海涛[2] 刘吉平[1] 刘丹丹 林奕伶 康玉娟 管强[2] 张仲胜[2] ZHANG Yi-fan;WU Hai-tao;LIU Ji-ping;LIU Dan-dan;LIN Yi-ling;KANG Yu-juan;GUAN Qiang;ZHANG Zhong-sheng(College of Tourist and Geoscience,Jilin Normal University,Siping 136000,China;Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agroecology,CAS,Changchun 130102,China)

机构地区：[1]吉林师范大学旅游与地理科学学院,吉林四平136000 [2]中国科学院东北地理与农业生态研究所湿地生物与环境重点实验室,吉林长春130102

出　　处：《环境生态学》2023年第1期7-15,81,共10页Environmental Ecology

基　　金：国家自然科学基金联合基金重点项目(U20A2083);国家重点研发计划项目(2022YFF1300900)资助。

摘　　要：碳(C)、氮(N)、磷(P)作为有机体所需的营养元素,其含量和生态化学计量特征能够影响生态系统物质循环。为探究长白山土壤C、N、P及生态化学计量的垂直分布特征,以长白山地北坡不同海拔土壤为研究对象,在600~2 200 m海拔范围内,分析了不同海拔和典型植被带不同深度土壤C、N、P含量、生态化学计量比和储量(密度)特征。结果表明:1)在不同海拔梯度下,0~15 cm土壤全碳(TC)、全氮(TN)、全磷(TP)含量变化范围分别是41.78~130.45 g/kg、2.76~6.32 g/kg、0.54~1.20 g/kg,土壤C/N、C/P、N/P的范围是13.01~22.33、45.47~156.82、3.51~7.63,土壤TC、TN、TP储量介于21.18~129.17 t/hm^(2)、1.19~6.26 t/hm^(2)、0.23~0.82 t/hm^(2)。TC含量、TN含量、C/N、C/P、N/P、TC储量和TN储量均随海拔升高呈现先增后减的中海拔峰值规律,而TP含量和TP储量则在总体上呈下降趋势。2)植被带变化改变土壤C、N、P含量、生态化学计量比及储量。TC含量(59.21 g/kg)和TN含量(3.27 g/kg)最大值出现在岳桦林带,TP含量(0.57 g/kg)最大值出现在针叶林带;C/N(18.19)、C/P(122.66)和N/P(6.74)均在苔原带达到最大;而TC储量(76.95 t/hm^(2))最大值出现在岳桦林带,土壤TN储量(4.57 t/hm^(2))最大值出现在针阔混交林带,TP储量(1.12 t/hm^(2))在针叶林带达到最大。除TP储量外,不同植被带C、N、P含量、生态化学计量比和储量均随土壤深度增加而降低,表现出明显的表层聚集特征。不同植被带、土壤深度及其交互作用均对C、N、P含量、生态化学计量比及其储量具有极显著影响(p<0.01)。研究结果将为全球变化下长白山森林土壤C、N、P元素含量和储量的研究提供数据积累和基础支撑,对了解陆地生态系统养分循环具有重要意义。The content and ecological stoichiometry of carbon(C),nitrogen(N) and phosphorus(P),the nutrients required by organisms, can influence ecosystem material cycles.In order to investigate the vertical distribution characteristics of soil C,N,P and ecological stoichiometry in Changbai Mountain, the soil C,N,P contents, ecological stoichiometry and storage characteristics in different altitudes and at different depths in typical vegetation zones were analysed in the altitude range of 600~2 200 m in the northern slopes of Changbai Mountain Land.The results showed that:(1)Under different altitude gradients, the ranges of soil TC,TN and TP contents in 0~15 cm were 41.78~130.45 g·kg^(-1),2.76~6.32 g·kg^(-1),0.54~1.20 g·kg^(-1),Soil C/N,C/P and N/P range from 13.01 to 22.33,45.47 to 156.82 and 3.51 to 7.63.The soil TC,TN and TP stocks ranged from 21.18 to 129.17 t·hm^(-2),1.19 to 6.26 t·hm^(-2)and 0.23 to 0.82 t·hm^(-2).TC content, TN content, C/N,C/P,N/P,TC storage and TN storage all showed a mid-altitude peak pattern of increasing and then decreasing with increasing altitude, while TP content and TP storage showed a decreasing trend in general.(2)The maximum TC(59.21 g·kg^(-1)) and TN(3.27 g·kg^(-1)) contents were found in the ermans birch zone, and the maximum TP content(0.57 g·kg^(-1)) was found in the coniferous zone;C/N(18.19),C/P(122.66) and N/P(6.74) all reach their maximum in the tundra zone, The maximum TC storage(76.95 t·hm^(-2)) was found in the tundra zone, the maximum soil TN storage(4.57 t·hm^(-2)) was found in the mixed coniferous broadleaved forest zone and the maximum TP storage(1.12 t·hm^(-2)) was found in the coniferous zone.Apart from TP storage, the C,N and P contents, ecological stoichiometry ratios and stocks in different vegetation zones decreased with increasing soil depth, showing obvious surface aggregation characteristics.Different vegetation zones, soil depths and their interactions all had highly significant effects(p<0.01) on C,N and P contents, ecological stoichiometry ratios an

关 键 词：长白山 碳氮磷 土壤生态化学计量比 海拔 土层 

分 类 号：S153[农业科学—土壤学]