连翅的数量生态学分析

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1、山西师范大学学位论文plantcommunity,belongingto64familiesand170genera，amongwhichthereisonespeciesofPteridophyteinFamily1，Genus1；3speciesofGymnosperminFamily2，Genus3；196speciesDicotyIedonousinFamily54，Genus147；22speciesMonocotyIedonousinFamily7，Genus19．ResearchplantcommunityinShanxiareabelongstotempe

2、ratezonedistribution，including22distributionareas，inwhichthenorthtemperatezonegeneratakes30-59％andoverall，theflorabelongstotemperatezoneinnature．AccordingtoRaunkiaer，Sbiologicalspectrumstatistics，thebiologicalspectrumstatisticsinresearchplantcommunitymainlyconsistsofhemicryptophytes，accou

3、ntedfor31．53％，followedbyphanerophytes26-58％-chamaephytealsooccupymuchwhilecryptophytes(geophytes)andtherophytesarerare．Inaccordancewiththeimportanceofthepopulation，forsythiaisthesinglespeciesdominancyineachspecificresearchcommunity,whileotherspeciesmainlyincludeRosaxanthina，Spiraeapubesce

4、nsandLespedezaformosa．Theforsythiapopulationsofspeciesdiversityresearchandcomparisonapply3indexesofdiversityindifferentlayersofdifferentareas．Throughthediversitycomparisonamongdifferentlevelsofspecies，thespeciesdiversityofforsythiapopulationsbelongstoshrublayer>herblayer>treelayeranditpre

5、sentsthesameindifferentregions．Accordingtothe英文摘要———————————————————————————————————————————————————一一一_一TWINSPANclassification，andconcerningabouttheactualecologicalsignificance，forsythiapopulationsaredividedinto8groupsasfollowing：I-Ass．Forsythiasuspense+Acerelegantulum-Carexlanceo，ata、II

6、．Ass．Forsythiasuspense+Rosaxanthina．Carexlanceolata、Ⅲ-Ass．Forsythiasuspense+LespedezaFormosatrZlobata+Rosaxanthina．Carexlanceolata，Ⅳ．Ass-Forsythiasuspense+Exochordagiraldii．Carexianceolata+Artemisiadubia、V-Ass-Forsythiasuspense+Cotinuscoggygriavar-Carexlanceolata+Artemisiadubia，Ⅵ．Ass．Fors

7、ythiasuspense．‘Carexlanceolata+Artemisiasuspense+Quercusbaronii-Carexlanceolata+Rubiacordifolia、Ⅷ．Ass·Quercusbaronii+Forsythiasuspense．Carex

8、anceo

9、ata+ElSholtziastauntoni．(3>Throughreplacingtimewithspace，forsythiaisdividedintofourageclasses，ofwhichthedistributionsho