不同年龄马尾松人工林生物量结构特征

对三明市尤溪县不同年龄马尾松人工林生物量结构特征进行了研究,结果表明:不同年龄马尾松林生长差异较大,但32、33、34和41年生马尾松林分平均胸径和平均树高变化不大;不同年龄马尾松人工林在单株、林分和根系生物量及净生物量上均表现出较大差异,其中34年生马尾松成熟林树干生物量所占百分比最高,可达到80.80%,此时的经济效益最高,可进行适当的采伐,在保证马尾松正常更新的同时,将获得更好的经济效益.

Studies of biomass characteristics of Pinus massoniana plantation in different ages

The biomass characteristics of Pinus massoniana lamb.plantation in different ages in Youxi County of Sanming were analyzed,the results were that the average diameter at breast height and average tree height became very significent different in different ages,but there were changed little between 32,33,34 and 41 years old P.massoniana plantation,and they grew slowly.There were significent differences between different P.massoniana plantation in individual,stand,root and net biomass,and the percent of stem biomass at 34 years old P.massoniana was the biggest,even to 80.80%,at this time the commercial benefit was also the biggest,P.massoniana could be chopped so that they could be kept in natural regeneration,and more commercial benefits would be got at the same time.