興安落葉松林下土壤物理化學(xué)性質(zhì)的研究.pdf

1、分類號S155.4學(xué)校代碼10129UDC13.080學(xué)號08204031興安落葉松林下土壤物理化學(xué)性質(zhì)的研究StudyonSoilphysicalchemicalpropertiesofDahurianLarchFest申請人：王彥軍學(xué)科門類：農(nóng)學(xué)學(xué)科專業(yè)：土壤學(xué)研究方向：森林土壤指導(dǎo)教師：魏江生教授論文提交日期：二〇一一年五月StudyonSoilphysicalchemicalpropertiesofDahurianLarchFe

2、stAbstractToinvestigatethesoilphysicalchemicalpropertiesofLarixgmelinifestthispaperedsevendifferentregionsoftheexistingLarixgmelinifesttypesastheresearchobjectThesoilhumussedimentlayersdifferentphysicalchemicalproperties

3、offestwasanalyzedsummarized.ApplicationoftheconventionalanalysismethodstoinvestigatechangesofthesoilmoisturewaterbulkdensitysaturatedhydraulicconductivitywatercontentpHvaluetotalNavailablenitrogentotalphosphusavailableph

4、osphustotalpotassiumavailablepotassiumganicmattercontentofvariousfesttypes.Theresultsshowedthat:①Hygroscopicwatercontentwas7.00～31.00%bulkdensitywas0.56～0.73gcm3saturatedhydraulicconductivitywas3.79～6.38cmswatercontentwa

5、s32.33～196.67%.②pHvaluewas4.34～6.73totalnitrogenwas4.04～16.09gkgavailablenitrogenwas0.62～1.01mgkgtotalphosphuswas0.99～2.08gkgavailablephosphuswas103.63～426.92mgkgtotalpotassiumwas9.70～16.15gkgavailablepotassiumwas103.63～

6、426.92mgkgtheganicmatterwas226.07～710.49gkg.③Saturatedhydraulicconductivitytotalnitrogenavailablenitrogentotalphosphuspotassiumganicmatterofhumuslayerwashigherthantheprecipitationlayerothershadoppositetrend.Coefficientof

7、variationinthehumuslayerislessthanprecipitation.④Mossmoisturecontentofwaterintypegenusofthebryaceaewashighestreaching45%thehighestdensitywasLedumthelargestsaturatedhydraulicconductivitywasgrassthehighestwatercontentwasge

8、nusofthebryaceaethestrongestacidofpHvaluewasLedumthehighestcontentoftotalnitrogennitrogenwasalderthehighestcontentoftotalphosphusavailablephosphuswasbirchwoodthehighestcontentoftotalpotassiumavailablepotassiumwaswoodtheh

9、ighestcontentofganicmatterwasLedum.KeyWds：Larixgmelinifest；Soilphysicalproperties；Soilchemicalproperties；Festtypes；humuslayer；PrecipitationlayerDirectedby：Prof：WeiJiangshengApplicantfMasterdegree：WangYanjun(Soilscience)（