作　　者： ; ; ; (张志权）;

机构地区： 华南师范大学

出　　处： 《植物生态学与地植物学学报》 1993年第4期289-298,共10页

摘　　要： 本文采用标准木和回归分析法(乔木层)及样方收获法(灌木层、草本层)研究了黑石顶自然保护区南亚热带常绿阔叶林的生物量及其分配规律。 1.四种回归模型:(a)Y=a+bX,(b)Y=aX^b,(c)Y=ac^(bx),(d)Y=a+blnX都能成功地应用于该森林的生物量研究,但一般以(b)及(c)的相关系数较高。对较大胸径的样木组(D≥10cm)直线方程是唯一显著的模型。 2.森林总生物量为357.976t·ha^(-1),其中树干223.017(62.30％),枝45.834(12.80％),叶15.609(4.36％),根(D≤3mm的细根除外)73.517(20.54％)。生物量绝大部分集中于乔木层(353.520t·ha^(-1),98.76％)。总生物量及树干生物量随高度分布呈金字塔形,而枝的生物量相反。叶生物量以15m以上的林冠层比例较大,但林下层仍有相当比例,反映了森林结构的复杂性。叶面积指数为17.1。生物量径级分布显示出正态分布特点。 3.地上部分生物量和总生物量分别是树干生物量的1.27倍和1.60倍。对其他热带亚热带森林分析也得到相似的结果。 Biomass and its allocation of the subtropical evergreen broad-leaved forest in Heishiding Natural Reserve was studied based on the standard trees and re- gression analysis (for tree layer) and clear cut (for shrub and herhaceous la- yer). 1. Four regression models: (a) Y=a+bX, (b) Y=aX^b, (c) Y=ae^(bX), and (d) Y=a+blnX could be successfully applied to the forest, among which (b) and (c) had generally high r values. But for leaf biomass of the biggest sta- ndard tree group, model (a) was the only regression which was significant at acceptable confident fimit. 2. Biomass of the forest was 357.976 t·ha^(-1), among which trunk 223.017 (62.30%), branch 45.834 (12.80%), leaf 15.609 (4.36%), and root (excludi- ng D≤3mm fine roots) 73.517 (20.54%). Most of the biomass (353.520t·ha^(-1)) was in the tree layer. Vertical allocation of total biomass and trunk biomass showed a pyramid pattern, but that of branch biomass, demonstrated a reverse trend. Leaf bio- mass distributed dominantly above 15m, but below this height, there was sti- ll rather important leaf biomass, reflecting the structural complexity of the forest. LAl was 17.1. Allocation among different diameter classes presented a normal distribution. 3. Aboveground and total biomasses were 1.27 and 1.60 times that of trunk respectively. Analysis on other tropical and subtropical forests provided similar results.

关 键 词： 黑石顶 常绿阔叶林 生物量 生态

领　　域： [农业科学]