湖南省典型岩溶区土壤颜色与土壤发育程度的关系
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中图分类号：S155 文献标识码：A 文章编号：1006-060X（2025）08-0023-13
Relationship Between Soil Color and Degree of Soil Development in a Typical Karst Area of Hunan Province
JIANG Jun’， JI Xiang-tong1，YUAN Hongl²，DUAN Cheng-long’，XING Yu-xin’，LIU Peng' （1.CollegeofsocltualUsitg，C;2ybrfKtc Natural Resources/Guangxi，situteofarstGeoogyinesecdemyofGeologicaliences，Guili，）
Abstract：Toinvestigatetecoelationbetweethesoilcolorandsoildevelopmentinkarstareas，thisstudyfocusedonthesoils 中 （0-30cm） developedfrom weatheredlimestoneparent materialinatypical karstareaofHunanProvince.Thesoilcolorparameters （hueH，chromaCandvaueV）weremeasuredandintegratedwithgeographicdataandsoilphyicochemicalpropertiestoestablish asystematiclasificationframeworkof thesoil.Furthermore，therelationshipetweensoilcolorandthedegreeofsoildevelopment wasexploredThresultsaesummarzedasfollws.Inthesystematicclasificationframeork，thearstsoilsinthestdyarea werecategordintooursldes：Athosolsesolssolsdambisos.）iiatdereceeistedinolr parameters ofdiferentkarstsoils.Mostsoilsamplesshowed thehueofYR，ofwhich10YRaccountedforthehghestproportion.he rangesof CandVvalueswere4-8and1-8，respectively.Theprofilediferences insoilcolorofAnthrosolswere more pronounced thanthoseofotersoilorders.（3）Thesoil pHinthestudyarea predominantlyrangedfromacidic to weaklyalkaline，withtextures mainly consisting of clay or clay loam.The content of free Fe2O3 washigh，while the organic matter content exhibited significant variations.Soilorganic materandironcontentwereidentifedaskeyfactorsinfuencingsoilcolor.Anincreaseinorganicatter content enhanced thehumus staining degree，darkening thesoilcolor.Inreases inclayparticle proportionledtodecreased Vand increased C.With the advancement of soil development， the enrichment of free Fe2O3 occurred concurrently with the increase in clay content. The silt-clay ratio demonstrated significant correlations （P<0.01 ） with soil color parameters.
Key words： typical karst areas; soil color; soil development; response relationships
土壤颜色是成土过程中环境变化与多种因素综合作用的结果，对环境变迁极为敏感，是土壤的重要形态特征之一。（剩余10800字）
