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时间:2018-04-15
《不同植被类型土壤理化性质研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、2014年5月防护林科技May,2014第5期(总128期)ProtectionForestScienceandTechnologyNo.5(SumNo.128)文章编号:1005-5215(2014)05-0020-03不同植被类型土壤理化性质研究向光志,杨志训,秦连岗(贵州省金沙县林业局,贵州毕节551800)摘要:采用样方法,研究了不同植被下的土壤理化性质。结果表明:马尾松纯林的土壤密度显著大于刺槐纯林和马尾松+刺槐混交林,但田间持水量和总孔隙度最小;马尾松纯林有效钾含量最高,刺槐纯林最低;马尾松纯林有效磷、碱解氮、有机质最低,刺槐纯林与马尾松+刺槐林
2、没有显著差异;马尾松+刺槐pH值最高,马尾松纯林和刺槐纯林之间没有显著差异;各植被土壤碱解氮与有效钾呈显著负相关,有机质与有效钾、碱解氮及pH值呈显著正相关,有效磷和pH值呈显著负相关;马尾松+刺槐林和刺槐纯林的田间持水量、总孔隙度、碱解氮、有机质、有效磷没有显著差异。从生态学的角度考虑,建议营造混交林,以便增加抗逆性,降低营林成本。关键词:马尾松;刺槐;纯林;混交林;土壤理化性质中图分类号:S714.2文献标识码:Adoi:10.13601/j.issn.1005-5215.2014.05.006SoilPhysical&ChemicalPropertie
3、sofDifferentVegetationTypesXiangGuangzhi,YangZhixun,QinLiangang(BureauofForestry,JinshaCounty,GuizhouProv.,Bijie551800,China)Abstract:Thesoilphysical&chemicalpropertiesunderdifferentvegetationswerestudiedbyusingsamplingmeth-ods.ResultshowsthatthesoilbulkdensityofPinusmassonianapure
4、forestissignificantlylargerthanthatofpureforestofRobiniapseudoacacia&Pinusmassoniana+Robiniapseudoacacia,butthefieldcapacity&totalporosityaretheminimum;thecontentofavailablepotassiumismaximuminPinusmassonianaforest,Robiniapseudoacaciaisminimum;availablephosphorus,availablenitrogen,
5、organicmatterofPinusmassonianaforestislowest,RobiniapseudoacaciaandmixedforestofPinusmassoniana+Robiniapseudoacaciahavenosignificantdifference;thepHvalueofPinusmassoniana+Robiniapseudoacaciaisthehighest;thepureforestofPinusmassonianahasnosignif-icantdifferencewiththepureforestofRob
6、iniapseudoacacia.Correlationanalysisshowsthatthealkali-hydrolysablenitrogenandavailablepotassiumshowasignificantnegativecorrelation,organicmatter,availablepotassium,availablenitrogenandpHissignificantlypositivelycorrelate,theavailablephosphorusandpHisnegativelyrelate.Thefieldwaterc
7、apacity,totalporosity,availablenitrogen,organicmatter,availablephosphorusofRobiniapseudoacaciaandPinusmassoniana+Robiniapseudoacaciahavenosignificantdifference.Fromanecologicalpointofview,itissug-gestedthatmixedforestshouldbebuiltinordertoincreasetheresistanceandreducethecostofsilv
8、iculture.Keywords:Pinusmas
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