|Table of Contents|

InfluencesofFencingonSoilPropertiesandVegetationinDegradedShrub-grassCommunity

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年03
Page:
109-115
Research Field:
Publishing date:

Info

Title:
InfluencesofFencingonSoilPropertiesandVegetationinDegradedShrub-grassCommunity
Author(s):
QUXingle1234FANGJiangping1234
(1.ResearchInstituteofTibetPlateauEcology,TibetAgriculture&AnimalHusbandryUniversity,Nyingchi,Tibet860000;2.NationalKeyStationofFieldScientificObservation&Experiment,Nyingchi,Tibet860000;3.TibetKeyLaboratoryofForestEcologyinPlateauArea,MinistryofEducation,Nyingchi,Tibet860000;4.TibetUnitedKeyLaboratoryofEcologicalSecurityinPlateauArea,Nyingchi,Tibet860000)
Keywords:
Keywords:fencingsoilpropertyquantitativefeaturespeciesdiversityRarefactioncurveTibet
PACS:
-
DOI:
10.11937/bfyy.20180561
Abstract:
Abstract:Theshrub-grasscommunitiesinthesemiaridYarlungZangboRivervalleywereusedastheresearchobject,theeffectsofenclosureonvegetationandsoilporpertiesofshrub-grasscommunitieswerestudiedbyfieldinvestigationandlaboratoryexperiments.Inordertoprovidereferencefortherestorationandtreatmentofmountainousvegetationdegeneration.Theresultsshowedthatthecontentsofsoilorganicmatter,totalphosphorus,availablephosphorus,andavailablepotassiuminthefencewereobviouslyincreasedafterthreeyearscomparedwiththeoutsidethefence,andtheirdifferencesinsoillayerof0-10cmindepthweresignificant(P<005).Withtheincreaseofsoildepth,thesoilnutrientcontentsweregraduallyconsistentwithoutsidethefence,reachingthesamelevelat30-40cm.Theshrub-grassvegetationheightandbiomassofthefencedwereobviouslyincreased(P<005),withanincreaserateof74%and101%respectively,dueespeciallytotheincreaseoftheheightandbiomassofPoaceaeandCyperaceaeplants.Thecommunitycompositionstructureandimportantvaluesofplantspecieswerechangedbythefence,indicatingthatthefenceincreasedplantdiversityandtheimportantvalueofpalatablePoaceaeandCyperaceaeplantsanddecreasedtheimportantvaluesofsomeunpalatableweedyplants.Theresultsofrarefactioncurveshowedthatthespeciesdiversityinsidethefencewashigherthanoutsidethefence,whichwasconsistentwiththeresultoftraditionaldiversityindexmethod.

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Last Update: 2019-03-15