粤北石漠化地区不同植被恢复模式下植物多样性与土壤互馈

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中图分类号：S718.5；S728.9 文献标志码：A 文章编号：1673-923X（2025）10-0134-10

Feedback between plant diversity and soil under different vegetation restoration modes in desertification areas of northern Guangdong

LINLiping'，LUOYong'，XUEChunquan2，YANGJiazhi，FENG Hanhua’，BAILA Quzhen1，TAN Wenxiong' （1.GuangdongForestry Survey and Planning Institute，Guangzhou 5lo52o，Guangdong，China; 2.GuangdongForest Resources Conservation Center， Guangzhou 5lol73，Guangdong，China）

Abstract：【Objective】Toexploretheintealmechanismbetwenplantspeciesdiversityandsoilphysicalandchemicalproprtiesin therockydesertfatinvioent，titiceedoproidteoeicalbasisforteoloicalstoationndomsie managementineockeserifatioarea.Methd】hicalartifialod-eaedpueforest（ode）tifalou broad-leavedmixedforest（ModeB）rtifcialroad-leavedmixedforest （ModeC）ndnaturalboad-leavedmixedforest（odeD），t plantcommitydilichloedacctsdciposioesityoilsicaldl propertisoftseredeted【Result】Iteprossofdintvegetatiostoatiopattsiockydsertfaara， thenumberofmileseerandspeiesinboralyertendstoduallcreaseileeproportionofachilydsto decrease，indicatingtatteompositionofpntfmilisgeneraandspeciesiecomingmoredversifdadomplex.Tedoant treespeciescompositioniesubndbaceuslarissiilamostalleingperalsadetolerantbaceouspants;2In therockydsertifcationreasoforenGuangdong，tebiodivesityindexofthenatualbroad-leavedmixedforestineboeal layerishighertanthatoftheartifcialforest;teSimpsonindexfortheshrubandherbaceouslayershowsnaturalbroad-leavedmix > artificial broad-leaved mix > artificial coniferousandbroad-leaved mix，while theMargalef index showsartificial coniferousand broad-leaved mix > artificial broad-leaved mix > natural broad-leaved mix;3） Thesoil nutrients inartificial pure broad-leaved forests aresignifcantlyghertaninthstoratinpates;4）Uderteaturalroad-leaedmiedforststoratnpeheis apositivcoreationetwenslutrntsdodversityiliotrartialforstpats，oilutrentssoatie correlation withdiversityindices.【Conclusion】Diferentvegetationrestorationmeasurescanchangesoilpropeties，whichintun affecthecompositionofbovegroundvegetationAmongthefourvegetationestorationpaters，thenaturalbroad-lavedmied forestowsttttuocetiotroltalpomooestad-vdds beadoptedetrstoodariaudlgtualatiosiie growth of the forest stand while maintaining the species diversity of the forest ecosystem.

Keywords：rockydesertifcation;getationstoration;speciesompositionplantdversity;soilphysicalandchmicaloperti

石漠化是以亚热带喀斯特环境为基础，受到人类不合理的社会经济活动的干扰和破坏，导致大量的基岩裸露，造成严重的土壤侵蚀，土壤生产力显著下降，并出现类似地表荒漠地貌的土地退化过程[1-2]。（剩余14262字）