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1、孔雀河畔土壤盐分空间变异及格局分析新疆农业大学2010,33(3):244～249JournalofXinjiangAgriculturalUniversity文章编号:1007—8614(2010)03—0244—06孔雀河畔土壤盐分空间变异及格局分析尹业彪,李霞,郭玉川.,董新光.(1.新疆农业大学草业与环境科学学院,乌鲁木齐830052;2.新疆农业大学林学与园艺学院,乌鲁木齐830052;3.新疆农业大学水利与土木工程学院,乌鲁木齐830052)摘要:沿孔雀河河流流向每隔5km,在离河岸50i"i1处有自然植被分布区的土壤进行分层
2、取样,测定各层土壤含盐量,使用地统计方法分析各层土壤含盐量的空间变异和格局分布特征.结果表明,孔雀河畔0～2O,2O～4O,4O～6O,6O～1O0cm土壤各层含盐量分别为:57.44,47.62,4O.34,29.9g/kg,均属重度盐渍化土;土壤含盐量从表层向底层递减,从上游向下游递增;同一平面内变化剧烈程度除表层外,从上向下递减.各层土壤含盐量的空间变程分别为:185.45,33.78,35.8O,49.05km;0～20cm土壤的空间变异受外界"干扰"影响强烈,其余各层受地质构造影响明显.在此基础之上,分析了这种现象产生的原因并提
3、出了防治建议.关键词:地统计;土壤盐分;中图分类号:S151.91空间变异;格局分布;孔雀河文献标识码:ASpatialVariationandDistributionAnalysisofSoilSalinityalongKongqueRiversideYINYe—biao～,LIXia,GUOYu—chuan..DONGXin—guang.(1.CollegeofPrataculturalandEnvironmentalSciences,XinjiangAgriculturalUniversity,Urumqi830052,China;
4、2.CollegeofForestryandHorticulture,XinjiangAgriculturalUniveersity,Urumqi830052,China;3.CollegeofWaterConservancyandCivilEngineering,XinjiangAgriculturalUni—versity,Urumqi830052,China)Abstract:Inthispaper,thesoilsalinityalongKongqueriversidewascollectedofeachlayerwasteste
5、d,andthespatialvariationofthesoilsalinityandthedistributioncharacteristicsofeachlayerwereanalyzed(pointintervaliS5kmand50Hitoriverbank).Themainconclusionsareillustratedasfollows:thesollsalinityofeachlayersis57.44,47.62,40.34,29.9g/kgrespectivelyfromthetoptObottom.whosesoi
6、lsareinaseveresalinizationcondition;thesalinizationdecreasesfromtoptObottomandincreasesfromtheupperreachestothelowerreaches;changingintensityofthesalinizationdecreasesfromthetoptObottomexceptthefirstlayer;thesalinityofthesoilinlayersiscontrolledbythestructuralfactorssucha
7、sgeolog—icalstructureexceptthe0—2Ocnllayerwhichisstronglyeffectedbytheexternalinterference.therangesofthespatialdependenceineachlayerare185.45,33.78,35.80,49.05kmrespectively;thedistributionofthesoilsalinityisdescendingfromtoplayertobottomlayer,fromtheupperreachestOthedow
8、nstream;thetoplayerisintensivelyinterferedbyenvironment.Accordingly,theauthorsanalyzedthecausesa
