不同立地因子对马占相思人工林的影响

以闽东南地区3个立地条件不同的8年生马占相思人工林为研究对象，运用方差分析、多重比较等方法，分析出马占相思林分的生长状况及其影响因素。结果表明，坡向对马占相思存活率影响很大，林分密度和混交程度对林分的胸径、单株材积无显著影响，但对树高生长量有显著影响。3个样地中，坡向为南坡、林分密度最大、无混交的林分蓄积量最大。

The Influence of Different Site Factors on Acacia mangium Plantations

In order to analyze the state of growth status in Acacia mangium forest stand and its influencing factors, the eight years of A. mangium in three different conditions site in the southeast of Fujian province took, and use using the method of variance analysis and multiple comparison analysis. The results showed that the slope impacts the survival rates of A. mangium most. The stand density and the degree of mixed forest stand had no significant effect on the DBH of forests stand and individual volume, but have significant effects on tree height growth. Among the three sample plot, the stands which in south slope have the biggest stand density and have no-mixed holds the biggest amount of accumulation.