36541.塔克拉瑪干沙漠腹地三種植物根系構(gòu)型特征研究

1、中國(guó)科學(xué)院新疆生態(tài)與地理研究所碩士學(xué)位論文塔克拉瑪干沙漠腹地三種植物根系構(gòu)型特征研究姓名：楊小林申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：生態(tài)學(xué)指導(dǎo)教師：張希明20080601摘要I／IAnalysisofrootarchitectureinthehinterlandofTaklimakandesertYANGXiao—lin(Ecology)DirectedbyProfessorZHANGXi—mingAbstractFractalgeometryis

2、apotentialnewapproachtotheanalysisofrootarchitecture，whichmayofferimprovedwaystoquantifyandsummarizerootsystemcomplexityaswellasyieldecologicalandphysiologicalinsightsintothefunctionalrelevanceofspecificarchitecturalpaae

3、rnsOtherwise，fractalanalysisisasensitivemeasureofrootbranchingintensityandfractaldimensionexpressesthe‘spacefilling’propertiesofastructureTheobjectiveofthisstudyWastofindoutthefractalcharacteristicsofrootsysteminthehinte

4、rlandofTaklimakandesertThewholerootsystemoftwonaturallyspecieswasexcavatedandexposedwithshovelsin2007Thesespeciesincludes：Tamarixtaklamakanensis，CalligonumroborovskiiAonefactorialANOVAwithspeciesasfactorshowedahighlysign

5、ificanteffectonfIactaldimensionthedifferenceoffractaldimensionindicates也eothemessofrootbranchingpatternTheregressionbetweenlinkdiameteranda，qwerenotsignificantforeitherspeciesSotheratioofthesumofrootcrosssectionalareasaf

6、terabifurcationtothecrosssectionalareabeforebifurcation口andthedistributionofthecrosssectionalareasafterbifurcationqaretheubiquitouscharactersofrootsystemInthispaper，wefindthesignificantlinearrelationshipsbetweenthediamet

7、erafterbranchingandrootlengthbiomassrespectively，becauserootbranchingisselfsimilarandbranchingrulesarethesameforrootsofallsizes，rootlengths，rootbiomassfortherootsystemsofwholetreesCanthenbeestimatedbymeasuringthediameter