中图分类号：S793.9 文献标志码：A 文章编号：1673-923X（2025）07-0123-11

Species diversity and soil physicochemical properties of different shrub communities at Sanxingdui city wall

LUXinyao1，HAOJianfeng¹，ZHAOFan²，CHENHuiqin¹，BAI Yishu1，TANGLan1 （1.SchoolofForestry，SichuanAgriculturalUniversity，Chengdu611130，Sichuan，China; 2.Cultural Relicsand Archaeology Institute of Sichuan， Chengdu 61oo41， Sichuan，China）

Abstract：【Obective】InordertoprovidebasicdataandtheoreticalbasisfortheprotectionandvegetationrestorationofSanngdui citywall，speiesiesityndilsicoeicalproprtisofirentsubommiisonaingdicitywallesdied. 【Method】Acodingtothedistrbutioncharacteristisofshbommunitiesoeachsectionoftecitywall，typialsamplgetod wasusedtoivestigatesixsubommunitis，toxplorethespeciesdiversityharacteristics，soilphyicalandcemicalprotis， andtheircorrelationamongthediferentshrbcommunities.【Result】）Atotalof31speciesoflantsrerecorded，belonging to50familiesad04genera.Tenomenclatureresultsre，ABrousonetiapapyriferadAlangiumchinnsecommunity;B.Rus chinensis andRosacymosacommunity;C.LonicerajaponicaandRosacymosacommunity;D.BrousonetiapapyferaandLigustrum sinensecommnity;E.BroussonetiapapyriferaandSlanumculeatissimumcommnity;.Broussonetiapapyriferaadlbia simeoniscomunityTediferentommunitisintesublarallontaiedBroussonetipapiferithtefistdomantecies incommunitiesBandCbeingRuschinensisandLonierajaponicaunliketeotercommuntis tatwereallBroussonetapaifer. ThefirstdominantspciesinommuitiesCandDinteerbaceouslaerareboththeaetenantheraploxeroidesndteest ofcommunitieswere not the same.2） Shannon-Wiener index （H） ，Simpson index （H^′） and species evenness index （J_sw） were the highest in theshrub layerofcommunityF.Richnessindex Dwas the highest in theshrub layer，and the lowest values of H H^′ and J_sw were foundinteblrofuity.）sturetet （C），ttalospos），otalrogen）cactin （AK），quic-actigospous（A）daicater（Odedtceeitegofeilllk weight （BW）and pH tended to increase with deepening of the soil layer. The contents of MC，APand SOM in he 0-20cm layer of Community Cwereclose toand significantly larger than thosein the 20⋅60cm layer.TP，TN，andAKcontentsofcommunityDwere higherin the 0⋅10cm soil layer，the soil was acidic，andMCwas the lowest.TheTP，APandSOMcontentsofclusterEwere higherin the 20-60cm layer，thesoil wasalkalineandtheMCwas the largest.4）AK showedasignificant negativecorrelation with H H^′ and J_sw valuesintheshrublayer （Plt;0.05） ，andSOMshowedasignificant positivecorrelationwith H^′ and J_sw valuesintheshrub layerand H_⋅ H^′ in the herb layer， J_sw values showed significant positive correlation （Plt;0.05） ，andMCshowed significant positivecorrelation （Plt; 0.05） with H H^′ and J_sw values of herb layer.【Conclusion】The study showed that quick-acting potassium，water content and organic materwerethemainfactorsaffetingtespiesdiversityofdiffretshrubcommunitisontecitywallofSanxingduisite.sults ofthisstudyprovideatheoreticalbasisforthenaturalsuccessonofshrubcommunitiesinthecitywallofSanxingduisiteafterthe fallowproteioItfutureeillotietotudytdirentshbommuiisatteaningisitefotepsptiesof soil microorganisms，plant root system， and resistance to impacts.

Keywords：Sanxingduicity wall; shrubcommunity; species diversity;soil physicochemical properties

物种多样性和重要值是群落的重要特征，反映群落的稳定性以及发展阶段。研究不同植物群落的物种多样性对植物与生态环境多样化的保护有着重要作用，已成为生态保护学领域的研究热点[1-2]。影响植物群落物种多样性形成的因素复杂多样[3-4]，在土壤-植物系统中，土壤环境因子通过调节植物生长发育所需养分和水分的供给关系[5]，影响植物群落的物种组成和分布格局，从而影响着植物群落物种多样性[5-7]。同时，植物群落也会对土壤造成影响，植物的枯落物与根系分泌物等可以改善土壤理化性质[，土壤与植物之间的协同驱动关系错综复杂，共同影响着生态系统的动态稳定[9-10]。

灌木是森林和灌丛生态系统的重要组成部分，在维持群落稳定性和多样性保护等方面具有重要作用[1]。灌木植物生长发育依赖于土壤养分，灌木群落的组成、生产力及其稳定性都受土壤养分影响[7，12-13]。目前对灌木群落物种多样性与土壤状况相关性研究逐渐增多。如贾喆亭等[4]对阿拉善高原珍珠猪毛菜Salsolapasserina群落研究表明，土壤pH值、温度和土壤含水量显著影响物种多样性指数。孙欣等[15对灌木扩张压力下沼泽植物群落研究发现，土壤有机碳、水分、全氮含量以及 N：P 是影响群落物种多样性变化的主要因子。王蒙等[]对巴丹吉林沙漠南缘植被研究显示，土壤有机质和全氮含量以及 20～40cm 土层的速效磷含量是影响群落物种多样性的主要因子。……