草类在生态环境保护中的地位和作用X

X,(,510642):r,,,,:;;;:Q948:A:100828873(2001)01,220121206(grasses),,,()(),1,,r-(r-strategists),,,,,,,,,,,,111,,,,,,,,[1],346mm,1,112,1915,11215X:(4100-G99012);(96-004-03-10):2000209202;:(1964-),,,.201,220016EcologicScienceVol120No11,2Jun12001[2],,,30,,,,,,112,,,,;,[3],,,,[4],,,41800thm-2a-1,4000thm-2a-1,3000thm-2a-1,,1000thm-2a-1,pH[5],,[59],4191,[5,7,1012],[59,1220],,,,,2211,39283hm2,,,19316hm2,5852hm2,()14115hm2,4912%,1419%,3519%,,,0165hm2,,,,,,,(),,,,,,,,,1989-19979,221207157hm2,()68135t,68135t,,(),,39815,1806,6015(),0192hm2,1985-19971164hm2,,212,,,,,,,,,,,,,,,;30%50%,,,,,(3),177127%,141117%,775%,23153%,pH510512,()1718%,1515%,4001000kg,200500,,,,hm21a150175,,hm2300450[2124]-[23],,,30%,60%,1819%23%28%,1112%12%17%,,,,,[24],,30m2,017018hm21,,,--()---[25],,013%0159%,9617%,[26],44.7%53.7%36.2%34.3%212.5%,pH0.65,0.09t/m3,3.8%,[27],25a,3211,2:4518%145%,,219411,70%80%,10%15%,,3,,,,[28],2/35/6,,CO2115gm2h-1,50m211CO2,10%20%,35,30%50%,15%25%,20%30%,10%20%,,,[29],,,70%,,4,,,,[59,15,16,30][15,16][17],BOD5CodcrTPTN85.72%80.44%,76.36%70.21%,49.34%40.45%29.34%16.18%,[18],[14],,70%,[19],()[20,28],,810dB,[28,29]5,,42120,,,,,,,,:[1],,.[M].:.1997.396-410.[2].[N].,1998.6.16.[3],.[J].,1993(7).[4],.[J].,1999(1).[5]LANCY,WONGMH.Environmentalfactorsaffectinggrowthofgrasses,herbsandwoodyplantsonasanitarylandfill[J].JEnvironSci,1994,6(4):504-513.[6]NationalResearchCouncil.Vetivergrass:athingreenagainsterosion[M].WashingtonD.C.:NationalAcademyPress,1993.1-83.[7]OfficeofRoyalDevelopmentProjectsBoard.Vetivergrassforenvironmentprotectionandotherusages[M].Bankkok:OfficeofRoyalDevelopmentProjectsBoard,1996.72-112.[8]RICHARDGC,BOLLAGJM.Vetivergrassforwaterconservation,landrehabilition,andembankmentstabiliza2tion[M].WashingtonD.C.:TheWorldBank,1996.191-214.[9]JUWARKAEAS,etal.DomesticwastewatertreatmentthroughconstructedwetlandinIndia[J].WaterSciTech2nol,1995,32(3):291-294.[10],.[J].,1999,16(3):34-37.[11],,.[J].,1997,8(3):314-318.[12],,.[J].,1994,13(2):23-26.[13],,,.[J].,1997,16(1):75-82.[14],,.[M].,1999,23(4):289-302.[15],.[J].,1997(1).[16],.[J].,1997(1).[17],.[J].,1998,16(3).[18],.[M].:,1999.[19],.[J].,1998,3(4):.[20],.[J].,1999,18(2):79-81.[21],,.[J].,1997,8(2):143-146.[22],.[A].:[M].:,1998.[23].-[D].:,1999.[24],.[J].,1999,15(1):26-32.5211,2:[25],,.[J].,1991,22(7):6-8.[26],.[A].:[C].:,1997.317-321.[27].[J].,1999,6(3).[28].[M].:,1984.649-663.[29].[J].,1997(8):20.[30].[J].,1995,16(5):83-86.TheRoleofGrassesintheEco-environmentalProtectionLIHua-shou,LUOshi-ming(InstituteofTropicalSubtropicalEcology,SouthChinaAgriculturalUniversity,Guangzhou510642,China)Abstract:Theroleofgrassesintheeco-protectionisbrieflyreviewed.Asther-bionomicstrategiesspecies,thegrasseshaveanimportanceroleintherestorationofdegradedecosystems.Thegrowthofgrassesinthedroughtregionismuchbetterthanthetrees.Thefruit-grasseseco-agriculturalsystemswouldbeincreasesoilfertilityandutilizationrateoflandandbeneficialtosoil&waterconservation.Thegrasseswouldbereducedtheenvironmentalpollutionandbeneficialtotheeco-environmentalpro2tection.Keywords:grasses;restorationofdegradedecosystem;eco-environmentalprotection62120