不同坡位7a生油樟香料林生物量调查

Biomass Investigation and Analysis of 7-year Forest of Cinnamomum Longepaniculatum under Different Slope

对南平市7a生油樟香料林地上部分和地下部分生物量及其分配率进行了调查研究。结果表明:油樟香料林平均胸径、平均树高生长量随坡位上升而不断下降;从生物量看,下坡位油樟平均木单株总生物量最高,其次为中坡位,上坡位油樟林分总生物量最低;就各器官生物量分配率而言,上坡位和下坡位油樟各器官生物量分配率表现为干部>枝部>叶部,而中坡位各器官生物量分配率均表现为干部>叶部>枝部;不同坡位油樟地下部分各器官生物量分配率均表现为骨骼根>大根>中根>小根>粗根>细根。

The biomass of above and under-ground and its distribution rate were studied in Fujian Nanping 5 annual forest of Cinnamomum longepaniculatum.The results showed that with the slope ascended,the growth of diameter at breast height and height of Cinnamomum longepaniculatum were descended.From the point of the biomass,the total biomass of Cinnamomum longepaniculatum mean tree in downhill was the hightest,followed by the middle slope position,uphill was the lowest.According to the distribution rate of various organs of biomass,the uphill and downhill Cinnamomum longepaniculatum had the sequence of trunk branch leaf,the middle slope position had the sequence of trunk leaf branch.As far as the roots of mean tree were concerned,Cinnamomum longepaniculatum had the sequence of stump root lage root middle root rootlet rough root fine root.