PANLei,ZHANGShu-yan.SoilPhysicochemicalCharacteristicsAnalysisunder DifferentDegreesofDegradationGrasslandinGongge’er[J].HEILONGJIANG AGRICULTURAL SCIENCES,2013,(06):18-20.
贡格尔草原不同退化梯度土壤理化性质分析
- Title:
- SoilPhysicochemicalCharacteristicsAnalysisunder DifferentDegreesofDegradationGrasslandinGongge’er
- 文章编号:
- 1002-2767（2013）06-0018-03
- Keywords:
- grassland; soilphysicochemicalproperties; correlation
- 分类号:
- S812.2
- 文献标志码:
- A
- 摘要:
- 为促进贡格尔草原的可持续发展，通过室内土壤样品分析，研究了贡格尔草原不同退化梯度土壤理化性质。结果表明：重度退化区土壤容重最大，平均值为1.53g.cm-3，未退化区土壤容重最小，平均值为1.36g.cm-3；不同程度退化区土壤pH和速效磷没有显著差异；未退化区全氮含量最高，平均值为0.83g.kg-1，重度退化区全氮含量最低，平均值为0.35g.kg-1；未退化区土壤速效钾含量最高，平均值为156.45mg.kg-1，其它几个梯度没有显著差异；未退化区有机质含量最高，平均值为23.23g.kg-1，重度退化区有机质含量最低，平均值为7.01g.kg-1；土壤容重与全氮、有机质、速效钾、速效磷均有显著相关性，土壤全氮与速效钾、速效磷、有机质之间有显著相关性，速效钾与速效磷之间没有相关性；土壤pH与土壤容重没有相关性，与土壤养分呈负相关。从而得出结论，贡格尔草原不同退化梯度土壤呈酸性，有机质、速效磷、全氮含量较低，土壤速效钾含量处于中等水平。
- Abstract:
- SoilphysicochemicalcharacteristicsanalysisunderdifferentdegreesofdegradationgrasslandwerestudiedbyanalysisofindoorsoilsamplesinGongge’ertoimprovethesustainabledevelopmentofGongge’er.Theresultsshowedthatthesoilbulkdensitywasmaximumintheseveredegradationdistrict,averagevaluewas1.53g.m-3 soilbulkdensitywasminimuminnon-degradationdistrict,averagevaluewas1.36g.m-3 ThepHandavailablephosphorusofdifferentdegreeofdegradationgrasslandshadnosignificantdifference;Thetotalnitrogencontentwasthehighestinnon-degradationarea,theaveragevaluewas0.83g.m-3 itwasthelowestinseveredegradationarea,themeanvaluewas0.35g.m-3 Theavailablepotassiumcontentwasthehighestinnon-degradationarea,averagevaluewas156.45mg?kg-1 therewasnosignificantdifferenceamongothers;Non-degradationregioncontentoforganicmatterwasthehighest,theaveragevaluewas23.23g?cm-3 itwasthelowestinseveredegradationarea,averagevaluewas7.01g.m-3 Therelationshipbetweensoilbulkdensityandsoiltotalnitrogen,organicmatter,availablepotassiumandavailablephosphorusshowedsignificantcorrelation,therewasnosignificantcorrelationbetweenavailablephosphorusandavailablepotassium;ThesoilpHhadnocorrelationwithsoilbulkdensity,andnegativelycorrelatedwithsoilnutrient.Theconclusioncouldbedrawnfromdata,thesoilwasacid,thecontentsoforganicmatter,availablephosphorusandtotalnitrogenwerelow,soilavailablepotassiumcontentwasthemiddlelevel.
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备注/Memo
收稿日期：2013-03-04
第一作者简介：潘磊（1979-），男，内蒙古自治区阿拉善盟人，硕士，从事草原生态研究。E-mail：panlei2014@163.com。
通讯作者：张淑艳（1964-），女，内蒙古自治区通辽市奈曼旗人，硕士，教授，从事草地生态与环境研究。