不同坡位7a生乐昌含笑人工林生物量分布研究

Research on the Biomass and Distribution Rate of 7-year Michelia chapensis Dandy Plantation under Different Slope

通过对霞浦县7a生乐昌含笑人工林地上部分和地下部分生物量及其分配规律进行研究。结果表明:不同坡位乐昌含笑平均胸径和平均树高均表现为下坡位>中坡位>上坡位;从林分生物量大小也表现出类似规律。从地上部分各器官生物量分配率来看,不同坡位乐昌含笑各器官生物量分配率均表现为干>叶>枝。从平均木各径级根生物量分配规律来看,乐昌含笑不同坡位均表现为骨骼根>大根>粗根>中根>小根>细根。

The biomass of above and under ground and its distribution rate of 7-years Michelia chapensis Dandy plantation in xiapu county were studied in this paper.The results showed that the size order of average diameter at breast height,average tree height and total biomass of Michelia chapensis Dandy plantation all tend to be： lowslope midslope upslope;and as turn to the biomass distribution rate of each organ of tree,the size order of biomass distribution rate of each organ under different slopes was trunkleafbranch;in terms of biomass distribution rate of different-size roots of mean tree,different slopes all showed the same trends that was： stump root large rootbig root middle root rootlet fine root.