不同间伐强度对柏木低效人工林灌草和土壤动物多样性的影响

《不同间伐强度对柏木低效人工林灌草和土壤动物多样性的影响》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、万方数据四川农业大学林学院2011级硕士研究生学位论文speciesinthemountain．TherewereOnlytwokindsofhighestdominantspeciesingenera,whichincludedPteris、Adiantum、CapillipediumandCumuli，Eachaccountedfor3．77％ofthetotalnumberofspecies．Withintherestofthespeciesingenerawas1kind，respectivelyac

2、countedfor1．89％ofthetotalnumberofspecies．(2)1591individualsofsoilanimalswererecordedunderthedifferentthinningintensityinCupressusfunebrislowfunctionplantations，whichbelongto3phyla,9classesand21orders．Whereby，414individualsofsoilanimalswererecordedincontrolc

3、omparis-on，whichbelongto3phyla,9classesand14orders．347individualsofsoilanimalswererecordedinlightintensitythinning，whichbelongto3phyla,6classesand15orders．313individualsofsoilanimalswererecordedinmediumintensitythinning，whichbelongto3phyla,6classesand13orde

4、rs．264individualsofsoilanimalswererecordedinhighintensitythinning，whichbelongto3phyla,6classesand13orders．253individualsofsoilanimalswererecordedinheavyintensitythinning，whichbelongto3phyla,7classesand13orders．Oribatida,Collembola,OligochaetaandHymenopteraw

5、eredominantgroupsinCupressusfunebrislowfunctionplantations，theindividualnumberaccountedfor73．92％ofthetotalgroups．(3)111me1∞yearafterthinningofCupressusfunebrislowfunctionplantations，Thespecies，quantityandbiomassoftheundergrowthwereincreased．Comparedwithcont

6、rolcomparison，Theundergrowthspecieswereincreased3,2，4and7kindsrespectivelyforthelightintensitythinning，mediumintensitythinning,highintensitythinningandheavyintensitythinning．Thequantityoftheundergrowthwereincreased7100tree‘hm-2，45700tree．hm'2,62700tree·hm’2

7、and101600tree·hm‘2．respectivelyforthelightintensitythinning，mediumintensitythinning，highintensitythinningandheavyintensitythinning．Thebiomassoftheundergrowthwereincreasedby12．31％，10．57％，9．23％and1．36％respe-ctivelyforthelightintensitythinning，mediumintensityt

8、hinning，highintensitythinningandheavyintensitythinning．(4)111the1加yearafterthinningofCupressusfunebrislowfunctionplantations，ShrubandHerbspeciesRichnssindex，Shannon-WienerindexandSimpsonindexallincreas