安徽亚热带常绿阔叶林甜槠等4个优势树种的生物量模型及生长模型

Biomass and growth models of four major tree species in subtropical evergreen broad-leaved forest in Anhui

采用指数模型的形式,根据21株标准木数据分别建立甜槠、苦槠、青冈栎、绵槠的生物量与胸径、树高的数学模型。生长分析表明,绵槠生长最快,其次为甜槠、苦槠和青冈栎;并以Logistic模型模拟出胸径、树高以及生产力随年龄增长的变化规律。群落中甜槠群体的叶面积指数最高,绵槠和苦槠次之,青冈栎最小,同时建立4个主要树种单株叶面积的指数模型。

Base on the biomass data collected＇from 21 sample trees, the mathematical models of biomass withDBH and height for four major evergreen species, Castanopsis eyrei, Castanopsis sclerophylla, Cyclobalanopsisglauca, and Lithocarpus harlandii were established using the exponential model form. Growth analysis showed thatthe growth of Lithocarpus harlandii was the fastest, followed by Castanopsis eyrei, Castanopsis sclerophylla, andCyclobalanopsis glauca. Changes of DBH, height, and productivity as the tree age increase were estimated using theLogistic model form1. The Castanopsis eyrei had the highest LAI, followed by Lithocarpus harlandii and Castanopsissclerophylla, and then Cyclobalanopsis glauca in the community. Meanwhile, the LAI exponential models for indi-vidual trees of the four major evergreen species were established in this paper.