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:2006208220;:2006210223:(30671489);(2004B006):(19632),,,,,,401:167325021(2007)0120104209,(,510642):,111309(27),,,3214%,,8318%,6311%;,,7212%,712%,1017%;,C47614%,,11,4312%;1711%;1018%;919%;,95,8516%,,,,,:;;;:Q948:A(Gramineae),[1],,,,,75%[2],,10000,650785,213242,[1,3],,267[1][4]2,(Agrostidoideae)(),1111[310],11128227()(14),(188)[3]5910%()2918%,1/2,1/3111,5,415%;43,3817%;2445,4015%5912,106,1018%514%,,8318%,24,3519%;5910,2413%,4816%1Table1GenusandspeciescompositionsofGuangdonggrassesGenustypesNo1ofgenusGenusrate(%)No1ofspeciesSpeciesrate(%)5415511643381743131924454015111351959121018752413106514752413111991930910010:,219143440129120071Vol129No11ChineseJournalofGrasslandJan120074986[11],717%612%4[12],(2),(2178),(3148),24Table2GenusandspeciescomparisonofgrassesandotherfourbigfamiliesinGuangdongfloraFamilynameNo1ofgenusGenusrate(%)No1ofspeciesSpeciesrate(%)/Species/genusAgrostidoideae1117173096122178Fabaceae594112164133166Compositae835182084122151Orchidaceae775141933192151Cyperaceae211151583127152112309(),270,39(,)(3),()114,3619%195,,6311%,42,1316%,2115%;20,615%,1013%;3,130(4211%,6617%),(3),53,1712%;33,1017%;223,7212%,(3),C369,2213%;C4236,7614%;43Table3Habitattypes,moistureecotypesphotosyntheticpathwaysofgrassesinGuangdongStatisticalitemHabitattypesMoistureecotypesPhotosyntheticpathwaysC3C4No1ofspecies1141955322333692364Rateintotal(%)36196311171272121017221376141132211[1],111(2)(48)(1)(19)(12)(4)(11)(8)(3)(2)(1)11(4),,,4312%,610,(Eragrostis)(Panicum)(Paspalum)(Digi2taria)(Echinochloa)(Isachne);,1711%,(9)(9),9417%;,1018%,8313%(6)(4);,919%,5,(Hygroryza)(Thysanolaena)(Sphaerocaryum)(Apluda)(Mnesithea)4,,95,8516%,,50160120072917018012007291,,,,,2,1(Phalarisarundinacea),1(Roegneriakamoji),1(Trise2tumbifidum),1(Calamagrostisepigeios),1(Oryzopsisobtusa),12(DeyeuxiahakonensisD1arundinaceavar1CiliataD1arundinaceavar1Laxiflora),2(PolypogonfugaxP1monspeliensis),2(AlopecurusaequalisA1japonicus),,,,9,(Arundinellabarbinodis)(Dimeriasinensis)(Erianthusfor2mosanus)(E1formosanusvar.Pollin2ioides);(Arthraxonmaopingensis)(D1solitaria)(Garnotiaciliate)(G1ciliatevar1conduplieata)(Pseudoraphislongi2paleacea)212[59,13],5,4,,01788,,2,1[(Setiacis)],,10,0171901722,4,,,,,,11(4),,,4,5Table5ComparisonbetweenGuangdongandadjacentareasAreaNo1ofgenusaNo1ofspecies/Species/genusbSimilaritycoefficientofgenus11130921789721321190171910023121310178890196211801722:a;b3Jaccard3311309,,[14,15],20(,),615%,,(Pennisetumpurpureum)(Euchlaenamaxicana)(Bothriochloaisch2aemum)(Chlorisgayana)(Coelachnesimpliciuscula)(Dichanthiumannulatum)(Digitariadecumbens)(D1ciliaris)(Eragrostiscilianen2sis)(Hemarthriacompressa)(Isachnetruncata)(Microstegiumnodo2sum)(Oplismenuscompositus)(O1undulatifolius)(Setariapalmifo2lia)(S1anceps)80,2519%,(Apludamutica)(Arthraxonhispidus)(Axonopuscompres2sus)(Capillipediumassimile)(C1parviflorum)(Chlorisbarbata)(Cymbopogoncitratus)(Cynodondac2tylon)(Cyrtococcumpatens)(Dac2tylocteniumaegyptium)(Eleusineindica)(Eremochloaophiuroides)(Leersiahexandra)(Leptochloachinensis)(L1panicea)(Melinisminutiflora)(Neyraudiareynaudana)(Ottochloanodo2sa)(Phalarisarundinacea)(Pogo2natherumcrinitum)(Sacciolepisindica)(Spartinaanglica)(Stenotaphrumhelferi)(Thysanolaenamaxima)(Zi2901zanialatifolia),,,3214%312,(Zoysiamatrella)(Z1tenuifolia)(Z1japonica)(Paspalumvaginatum)(P1no2talum)(Chryso2pogonaciculatus)(Vetiveriazizanioides)(E1curvula),,,;(D1longiflora),,;(E1perennans),,;,,,,,;(P1paspaloides),,,;(P1orbic2ulare)(),;,(Brachiariamutica)(B1decumbens)(Ch1formosana)(P1alopecuroides)(Phragmitesaustralis)(Ph1karka)(Sporobolusvirginicus)(Spinifexlit2toreu)(Saccharumspontaneum)(Sorghumhalepense)[49,14,15]313,,,,,,,(C1caesius)(C1nardus)(C1hamatulus),[49,15]314,,16[49,15],;,;;;,;(E1pilosa);(Heteropogoncontortus);(Imper2ataKoenigii);(Lo2phatheramgracile)(Miscanthusfloridu2lus)(Pogonatherumcrinitum);(Setariageniculata);;(S1viridis),315(Arundodonax),,(Eulali2opsisbinata)(Eulaliapeciosa)(Arundinellasetosa)(A1anomala)(A1nepalensis)(M1sinsnsis)(M1ciliatum)(Saccharumarundinaceum)(Themedajaponica)(Th1cauda2ta)(Th1villosa),(Saccharumsinense)[49,15],,[16]441111128227(),7174%6120%,,,5,(2178),,8318%412,6311%(7212%),(1712%),1017%,C47618%,41314[11],011200729111,,4312%;,1712%;,1018%;,919%4,,95,8516%,,,,,,414,,,,(References):[1],,T,,1[M]1:,200313222348,1072210751WuZhengyi,LuAnming,TangYancheng,ChenZhiduan,LiDezhu1TheFamilyandgeneraofangiospermsinChina:acomprehensiveanalysis[M]1Beijing:SciencePress,200313222348,1072210751[2],,1[J]1,1999,13(2):172241XieXinming,MaWanli,ZhaoLiangcheng1Eco-geographicaldistributionandfloristiccharacteristicsofGramineaeinHelanmountain[J]1JournalofAridLandResourcesandEnviron2ment,1999,13(2):172241[3]1[M]1:,199719423881XuZhu1GrassGeneraofChina[M]1Hohhot:NeiMenggolPeople’PublishingHouse,199719423881[4]1-[M]1:,1959111228521GengYili1Floraillustralisplantatumprimarumsinicarum[M]1Beijing:SciencePress,1959111228521[5]1(,)[M]1:,20021124501DelectisFloraeReipublicaePopularisSinicaeAgendaeAca2demiaeSinicaeEdita1Florareipublicaepopularissinica,To2mus9(2)[M]1Beijing:SciencePr