巴山木竹種群生物學研究.pdf

1、南京林業(yè)大學博士學位論文巴山木竹種群生物學研究姓名：王太鑫申請學位級別：博士專業(yè)：植物學指導教師：丁雨龍20050601AbstractArundinariafargesiiEGCamusbelongstoBambusoideae，PoaceaeItisamiddle—mountain、distributedmiddlelargeamphipodialbambooItdistributesmainlyinthemountainousar

2、eaofDabashanandQinlingmountains，extendingtoSichuanGansu，Shanxi，Chongqing，Hubei，Henan，sixprovincesAfargesiiisoneofthemainfoodbamboosofPandaItisfinematerialforpapermaking，andiswidelyusedinweaving，asfarasframematerialingree

3、nhouseThebambooshootshashighvalueofnutritionThemorehigherthealtitudethelatertheemergenceofbambooshootsAtthealtitudeof1900m，AfargesiishootsemergeatabouttheendofAprilortheearlyofMayMortalityoftheshootsisabout3150％nlemainre

4、asonisshortageofnutritionShootswhichemergedasynehronouslyattheearlyofshootingtime，endtheirgrowthalmostsynchronouslyTheprocesslastsabout70daysRegressionequationcouldforecastthegrowingprocesswellTheamountofgrowingduringthe

5、day(S813‰islargerthanthatofduringthenightTheheighgrowthofAfargesiiclonalpopulationpresentsapositivecorrelativitywiththe5emdepthsoiltemperatureThemeristemattherhizomatoustipofAfargesiicouldkeepitsfissilityfor20yearsatleas

6、tThereforethebranchingrhizomeishardlyfoundTosuchrhizome，howeveritbecomeseasiertoide曲母itsagesbecausethelengthoftheintemodesvariesregularlywimaginginayearInthefavorableenvironment，therhizomecouldproduceabout13nodesandstret

7、chapproximately60cmoneyearThecontiguousgddquadratshavebeenappliedtosamplingforfielddataThespatialpatternofAfargesiiclonepopulationWastheclumpeddistributionandthepaRemscalewasat9216mz，therelativeintensitydifference(RDD)wa

8、s389，whichmeanstheeulmsintheclumpsare389timesdensityofthoseintheinterspacebetweenclumpsThepattern胂inWas3817cm，whichimpliesthemeandistancebetweenclumpsis3817emThesympodialrametsholdthedominantstatusintheclonegrowthoftheAf

9、argesiipopulationTheslrengtheningtrendofclumpeddistributionwithageingimpliesthatthepopulationwasunderarelativelys仃ongeenvironmentalpressureThebiomassallocationsamongculnl，branchleafrootrhizome，bamboostumpofAfargesiiwere5

10、56％，951％，340％，206％，870％，2077％respectivelywhiletheabovegroundbiomassallocationsoframetsfrom1t05，6and7，8and9，10andmorethan10yearsoldwere19O％，52％，54％，43％，89％，146％，18_2％，244％respectivelyTheundergroundbiomassallocationsamong0

11、～20cm，2040cmandmOlldeeperindepthofsoilwere134％，428％，438％llspectivelyThestemweightofbambooswhichwerelessthan3yearsandover8agewerelowerthanthestandardstemweight，whilewhichbetween4and7yearswerehigherthanthestandardsternweig