<正>以 1 0 2 6块固定样地 3期数据为主要信息源 ,采用高次多项式构造分布模型 ,对浙江临安 1 983～ 1 994年期间森林景观生物量空间分布趋势进行了分析。结果表明 ,从 1 983年到1 994年 ,单位面积生物量的峰值大大降低 ,在各个环境梯度上生物量的差异显著减少 ,峰值所处的位置由中山地区向高山地区退缩、从中等坡度逐渐下移至比较平缓地带、从交通不便的偏远山区向经济发达的丘陵区和平原转移。

Using the data from three stages of 1?026 permanent plots, models of high degree polynominal are set up to analyse dynamics of spatial distribution of biomass of forest landscape in Lin′an from 1983 to 1994. Analyzing results revealed that from 1983 to 1994, the maximum value of biomass decreased rapidly, the variance of biomass along the scale of each environment factor became remarkably smaller, the location of maximum point shifted from the mountain of middle altitude to the higher place, from the area with middle level slopes to gentle places, from mountain area with the poor transport condition to relatively developed plains or hills.