Research on the Specific Leaf Area of Common Plants in Fuzhou City
[Objective] The aim was to research the correlations between specific leaf area (SLA) and leaf biomass (LM) of different plant species. [ Method] With the 24 common greening plant species in Fuzhou City as test objects, their dry and fresh leaf weights, leaf areas (LA) and SLA were measured and the response models of SLA to biomass increasing of different species were researched. [Result] The regression analysis showed that the LA of all the tested plants showed extremely significantly positive correlation with their LM; the allometry indexes between LA and LM of 6 plant species were bigger than 1. 0 and that of 18 plant species were smaller than 1. 0; the average allometry index of the 24 plant species was 0. 96. LA was proportional to (LM) 0. 94. The water content in leaf ( Mw ) of all the tested plants showed extremely significantly positive correlation with their LM; the allometry indexes between MW and LM of 8 plant species were bigger than 1. 0. that of 2 plant species were 1. 0 and that of 14 plant species were smaller than 1. 0 Mw was proportional to (LM)0. 96. [Conclusion] The allometry indexes and constants between LA and LM of different species had significant difference.