风蚀区不同土地利用方式下土壤腐殖质分布及其光谱特征
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中图分类号：S153.622；S157.1 文献标志码：A 文章编号：1672-2043（2025）07-1793-11
doi：10.11654/jaes.2024-0532
Distribution and spectral characteristics of soil humus under diverse land use patterns in the wind erosion region
BAI Xueyan，GUSiyu*，WANG Ziying，CHE Yanjing，FENG Jingyi，ZHANGWeijian （Resources and Environment，NortheastAgricultural University，Harbin15oo3o，China）
Abstract：Theobjectiveofthisstudywastoexaminethedistributionandspectralcharacteristicsofsoilhumusunderdiverselanduse pattersinthewiderosionregioTtisnd，temusontetfuoescecespectralcharaceritifuiccid（FA）ndinic acid（HA），andinfraredspectraldiferentiationofhumin（HM）wereinvestigatedinthesurfacelayer（O-15cm）ofthesoil.The investigationwasconductedinaheavilywind-erodedareaofQiqihar，HeilongjiangProvince，China，utilisingtesoilsofsland woodlandandslopingcroplanddown-slope，midde-slopeandupprsloesegmentsdelieatedat1OOminteralsfromthebottomtote top，respectively）.Theresultsdemonstratedthatthetotalhumusandcarboncontentofachcomponent，thedegreofhumification（ PQ ） and the Hu-Fu ratio（ cHA/cFA ）of the soil under diverse land use patterns exhibited the following behaviour： grassland>woodland>farmland downslopesection>farmlandmidslopesectio>farmlandupslopesection.Three-dimensionalfluorescencespetrademonstratedthatfour distinctfluorescecepeakswerepredoantlybseedinallsoilandHAty，amelythpeakoflviccidinerailet region，theCpeakoffulviccidinthevisibleregion，theDpeakofhumic-likesubstances，andtheBpeakofproteinoids（tyrosinelike substances）.eApakeibitedtegeatestintesityFAwasctedbyothitealandetealsourcendHwasoe byexogenousinputs，bothofwhichwerecharacterisedbylowautochthonouscontributionandweak humificationomparedwithsloping cropland，grassanddoandebiedreprooedutohooussousndongersolmiiaiefadsta demonstratedtatsotionakbidiiassadoddndlandils werecharactersdbyeresceofesetffucalgouplouhoentsdidIisoteworthatass andwodlandsoilsexhiedelevatedconcentratiosofdisubstitutedbnzeeadcisoleis，hichpromotedteformationofstableH structures.Inconclusion，measuressuchasincreasingvegetationcoverandrationallyplanninglndusewereemployedtomaintainor enhance soil humus content，thereby mitigating the negative impact of wind erosion on soil organic mater. Keywords： wind erosion; soil humus;three-dimensional fluorescence spectrum; infrared spectrum
土壤风蚀是指风和地表相互作用下产生的连续动力学过程，是干旱、半干旱地区土地退化和荒漠化的主要驱动因素之一。（剩余20661字）
