土地利用类型对土壤碳氮元素浓度及其空间分布特征的影响

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关键词：土壤总碳；土壤总氮；土地利用类型；空间分布；半方差分析中图分类号：S153.6 文献标志码：A 文章编号：2095-6819（2025）05-1289-10 doi：10.13254/j.jare.2024.0350

Impact of different landuse types on the concentrations and spatial distribution characteristics ofcarbon and nitrogen elementsin soil

WANG Mingkun1，LI Xiulong²，TONG Yindong3，LI Zhenxin3，4*

（1.EcologicalEviroentureaufLiianCoutybabetanadiangutoomousrefecture，icanProvince，iia10， China;2.ChangchunCollgeofElectronicTechnology，Changchun30o51，China;3.SchoolofEcologyandEnvironment，ibet University，hasa85Oo，China;4.choolofEnvironment，NortheastNoralUniversityhangchun3017，ina） Abstract：Landusechangeiscucialfactoregulatigcarbonandnirogensourcsinkfunctiosinterrestrialosstes.Tolucidate thehorizontalandeticaldistrbutiocaracteisticsndcontetdiferencsofabonndrognelementsinsoilsuderttycal landusetypes（gassland，oodand，andrland）inaarididegion，tissudyeplodagidmpgthd. Totalcarbondotalrgeotsreeaurdat36pgpsrossisls（0-3046 cm，and 60-10Ocm）foreachlandusetype.One-wayANOVAwasusedtocomparecarbonandnitrogencontent diferencesamongsoil layersintetesoiltypes，futhrexploingtirerticaldistrbutonaractersticsSemvaranceaalysisandKrigingieolation wereutlizedtoalythspatialterogeeitypatesofarbonadnrogenelmntsinttopsoilofteelndusetsesults showed that the variabilityin total carbon content in the topsoil（ 0-10cm ）of woodland wassignificantly higher than that of grassland and farmland.oweerabilityinotalroenotetisixsoillasfasladoseagraatiodlad andfarmland.Amongthteelandusetys，everticaldstributionoftotalsoilcarboningrassnddidotsowdecreasingtrdih increasingdepth，hilewoodandandrandlsgenealyehbiteddcreasingtrendoftotalcarbonwithpthInthecsoil layer， grassland soil had the highest total carbon content （ 1.50%±0.23% ），approximately twice that of woodland （ 0.75%±0.10% ）and 1.4 timesthatof farmland（ 1.04%±0.12% ）.Woodland soil had the highest total nitrogen content（ 0.53%oo±0.09%o ），about1.8timesthatof grassland （ 0.30%o±0.06% ）and1.4times that of farmland （ 0.38%o0.06% ）.Semi-variance analysis results indicated strong spatial autocorrelationfoarboadrogenlementsinthpsoilofallandusetseeptfootalrbonioodlandtopsilich showedmoderatespatialutocoelationThsudydmonstratestatinsemidtosumidrgios，ativeassandostms havehigher carbon sequestration potential compared with woodlandand farmland.

Keywords：soil totalcarbon;soil totalnitrogen;land-use type;spatial distribution;semivariogramanalysis

自工业革命以来，人类活动以及土地利用的快速变化正在显著影响土壤圈中碳氮循环过程。（剩余15978字）