久马高速公路沿线不同恢复模式对高寒草地植物群落特征和土壤特性的影响

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关键词高寒草地；恢复模式；群落特征；土壤特性；高速公路

中图分类号X171.4文献标识码A

文章编号 0517-6611（2025）16-0039-10

doi：10.3969/j.issn.0517-6611.2025.16.009

Abstracteiedertpreieesofolgicalstoatiofxpresostruiligiosdeple theefectsofdiretoverodesoplantcmitydsolaracterstisoflpiegrassadtodeJaexpresealo catedintheAbaTibetanandQiangAutonomousPrefectureinNorthwesternSichuanwasselectedtocomparefiverecoverymodestraditioal grasssedsowing method（SG），grasseedsowingcombinedwithcoveredplantfiberblanket（PB），sodstackingandresurfacig（R）sod resurfacingafterbracketstorage（BR）andsodresurfacingandcompactionfiationafterstackingandpreservation（CR）.Soilbulkdensity， waterontentcbtaloblelbleososesuceof andcommunityealdearsotestatricksde，aoWiereitydexndprcialompontale usedtoevaluateteemedtionect.esultSoiltotalitroenndvailblepotassiumonentsdasificantetonoiy growth （ P<0.05 ）.The CR mode performed best incommunitycoverage，species diversityand biomass.Thecontentsof soil organiccarbon，total nitrogen and available potassium in this mode were significantly higher than those in other modes （ P <0.05）.The soil bulk density of SG mode wasthelargest，hilethesoilbulkdensitofCRoeas thesalest.TreasasgnifcantcoelatonetwensoilHvalueadrotu face area，soil moisture content and organic carbon content and available potassium （ P<0.05 ）.Principal component analysis showed that availablepotasisltgthedncbopotatoea sionThesodufcingodespellydassificantleerantalgassdowgodeihhgi coveragespeesitdoascidlsoableatohindotofotalrogdl blepotassuinsoilasympoantfoouitothyplnggdotassertls，lantgothd sodresufacingnditsotidtreaeteodsanbeidelyusedincolocalstoatioinalpinegios，rovdingtivesolutios for ecological environment improvement and biodiversity enhancement.

Key WordsApine grassland; Recovery mode; Community characteristic ;Soil property;Expressway

青海久治（川青界）至马尔康高速公路（简称久马高速公路）是四川首条全线海拔超 3000m 高原高速公路，位于四川省的西北部，处在川西高原的核心区域。（剩余15986字）