广西海岸白骨壤红树植物地上部生物量的相关分析

1992年3月在广西北海半岛大冠沙白骨壤群落研究了白骨壤植株的测树因子跟地上部生物量间的相关性。结果显示,由于白骨壤植株形态多变,树高通常小于2.0m,树高在估算地上部生物量时并不重要。植株的生物量可较好地用下述方程估算:茎:W=0.8496-0.4429D+0.0748D~2枝:W=-2.2744+1.5595e~(-H)+1.0590C+0.0606D~2叶:W=0.0180D~(2.1294)地上部分生物量:W=-2.4386+0.0081H/LnH+1.4796C+0.0991D~2式中 H 为树高(m),D 为基茎(cm),C 为冠幅(m~2),W 为干重(kg)。文中还给出了利用这些方程估算群落生物量的范例。

Correlation Analysis of Aboveground Biomass of Coastal Mangrove Avicennia marina in Guangxi

The correlation analysis between tree morphological parameters and aboveground biomass was studied in March 1992 for an Avicennia marina community at Daguansha of Beihai pennisula of Guangxi.The results show that tree height seems less important in estimating biomass because the tree morphology varies considerably,and the tree height is usually less than 2.0mm.The better equations used to estimate tree aboveground biomass should be: stem:W=0.8496-0.4429D+0.0748D~2 branch.W=-2.2744+1.5595e~(-H)+1.0590C+0.0606D~2 leaf:W=0.0108D~(2.1294) sum:W=-2.4386+0.0081H/In H+1.4796C+0.0991D~2 and,H is tree height(m),D basal diameter(cm),C canopy area(m~2)and W dry weight (kg).An example of application of these equations to estimate the biomass of a community is also offered.