Variation of Leaf Functional Traits of Two Life Forms of Woody Plants
Leaf traits and their variation characteristics were investigated to reveal the adaptation strategies of two life forms woody plants.Eight leaf traits were measured and analyzed on 16 species of arbors and shrubs.The 8 leaf traits include leaf area(LA),leaf thickness(LT),leaf dry matter content(LDMC),specific leaf area(SLA),fresh leaf weight(FW),dry leaf weight(DW)and chlorophyll content(Chl),leaf moisture content(LWC).The 16 species of arbors and shrubs were Robinia pseudoacacia,Acer elegantulum,Populus×Canadensis,Populus canadensis,Platanus orientalis,Fraxinus chinensis,Magnolia denudata,Ginkgo biloba,Koelreuteria paniculata,Cerasus serrulata,Cercis chinensis,Prunus cerasifera,Malus Halliana,Malus micromalus,Amygdalus triloba,and Syzygium aromaticum.The result showed that the variation of leaf characters was different.The FW(90.13%),DW(86.36%)and LA(95.13%)of the arbor species were strong variation,the LDMC(18.79%)and LWC(12.81%)were weak variation.The SLA(54.03%),FW(60.17%)and LA(62.17%)of shrub species were strong variation,and LWC(14.60%)was weak variation.There was close relationship among leaf functional traits.The LA of arbor species was significant positively correlated with FW and DW(p<0.01),and positively correlated with LSA(p<0.05).The LA of shrub species was significant positively correlated with FW,DW,SLA and LWC(p<0.01),and significant negatively correlated with LDMC(p<0.01).Principal component analysis revealed that FW,DW and Chl were the top three factors that accounted for the adaptability of woody plants.Overall,the stability of most leaf functional traits of arbor species and the correlation between traits are weaker compared to shrub species.Arbor species make more adjustments to adapt to the ecological environment than shrub species.
life formwoody plantleaf functional traitsvariation
万方数据
维普
