小叶青冈天然林树干含水率的研究

Moisture content of tree stem of Cyclobalanopsis myrsinaefolia(Bl.)Oerst in natural forest

在福建茫荡山自然保护区天然小叶青冈林分中设置5块标准地,每块标准地取2株标准木,共取10株标准木。在标准木上截取圆盘,测算含水率,建立树干含水率与树干离地高度的相关模型。结果表明:小叶青冈树干含水率与树干的离地高度有着显著相关关系,y=100/(2.425 3+0.027 6x)为最优模型,其含水率随着树干离地高度升高而逐渐上升。

Five sample plots in Cyclobalanopsis myrsinaefolia（Bl.）Oerst stand were set up in Mangdang Mountain Nature Reserve,Yanping district of Nanping city,and ten sample trees were selected.Discs from sample tree were intercepted and the moisture content rate was calculated after dried.The data of sample trees was analyzed by using linear regression method.The result show that there was significance relationship between the moisture content rate and the stem height,the moisture rate showed an ascension with stem height above ground,and the most superior relative model was y=100 /（2.425 3＋0.027 6x）.