低效松林坡位效应对林窗补植赤皮青冈幼树早期生长的影响

打开文本图片集

中图分类号：S756.5 文献标志码：A 文章编号：1673-923X（2025）09-0050-09

Abstract：【Objective】Toprovideathoreticalbasisfortepreisecultivatnadmanagementofiefcientpinforestsbyaling theeffectsofslopepositiononsoilphyscochemicalpropertiesandenzymeactivitiesofineffcientpineforestsandtheearlygrowth ofreplantedCyloblanopsisgilvasaplingsuderieffcientpineforestgap.【Method】Soilofineffcentpineforestandreplanting C gilvasaplingsunderineffcientpineforestgapoftreesloeposiions：upperslope，medumslopeanddownslope，asteresearch objectoexpehreofoeoosilicoalpropectioftpis early growth of C gilva saplings，thenexplore their relationship.【Result】Thesoil physicochemical properties and enzymeactivities of inefficientpnefrestatdiferentslopepositionsshowsomediferences，tenutrientstatus，theactivitiesofureaseandcatalase ofmediumanddownslope weresignificantlybeterthanupperslope.There weresignificantdiferences intreeheightandground diameterofreplantingC.gilvasaplingsunderineffcientpineforestgapatdiferentslopepositions.The growthperformanceofsaplings of mediumanddownslopewassignificantlybetter thanupperslope.Withthedepeningofthesoillayerofthesameslopeposition， thesoilbulkdsitadallireasd;thsoilaterotent，utrietsdteactiviisgdallydecreaedtelst analysisshowedtattereasigncantoelationetweentreeightndganicrbonetweengrondameterdsilbulk densityrganicabondellasedundanclysissowedatsoiltrogenosporusndilaterotenteea factorsafectingsoilezyeactivities，totalnitrogenandavailablephosphorushadthehighestexplanationrateforenzyeactivities. 【Conclusion】Thesiteconditionssuchas soilphysicochemical propertiesandenzymeactivities inthe mediumandlowerslopes are moreconducive to the growth of replanted C. gilva saplings under ineficient pine forest gap，the soil nutrient status can be improved by fertilizationonteupperslopewithelativelypoorsiteonditios，oastobeterpromotethegowthofreplatedtresudeforest. Keywords：oeposition;soilsicoeicalroerty;soilctiityeienpinforst;Ccoblnosiila

立地条件是影响植物生长发育的各种自然环境因子的集合，包括地形、土壤、水文和人类活动等[1]，其中地形因子（包括坡度、坡向和坡位等）起决定性作用，它会影响区域环境水热条件的再分配[2。（剩余16919字）