马尾松稀疏林套种闽粤栲经营效果分析

Running efficiency of Pinus massoniana sparse forest by inter-planting Castanopsis fissa

研究了低质低效马尾松稀疏林套种闽粤栲的经营效果,结果表明：在马尾松林郁闭度0.2~0.5下套种的7年生闽粤栲都可以正常生长,生长量最大的是郁闭度0.3~0.4的处理。套种闽粤栲能够促进马尾松林生长,其平均胸径、树高、林分蓄积量均有不同程度提高,且林分蓄积量间差异均达到极显著水平,林分生产力显著提高。林内生长环境主要因子（土壤容重、土壤含水量、光照强度、气温、地温和空气相对湿度等）也都发生了不同程度的变化,有利于马尾松、闽粤栲生长,而且改善了生态质量,有显著的经营效果。

Running efficiency of low-quality and inefficient Pinus massoniana sparse forest improved by inter-planting Castanopsis fissa was studied. The results showed that when the canopy density of Pinus massoniana was 0. 2- 0. 5,the interplanted Castanopsis fissa could grow normally,and the growing amount peaked at 0. 3- 0. 4 canopy density. By inter-planting Castanopsis fissa,the growth of Pinus massoniana was promoted,and the average dimeter,height,and stand volume were also improved,furthermore,the stand volume varied at very significant difference level,which significantly increased the productivity forest stand volume. Main environmental factors,including soil bulk density,soil water content,light intensity,air temperature,soil temperature and air relative humidity,were also changed to be helpful for growth of Pinus massoniana and Castanopsis fissa,which improved the ecological environment and the running efficiency.