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以广西石山人工林群落调查数据为材料,采用双向指示种分类(TWINSPAN)、冗余分析(RDA)和典范对应分析(CCA)研究了9个生境变量、1林分类型因子与石山人工林多样性、草本和灌木植物组成的关系。结果表明,坡位是影响石山人工林物种组成多样性的最主要因子,露石率和坡度对石山人工林林下有害物种分布影响最大。石山人工林林下植被组成的主要决定因素是生境因子(解释率23%~55%),而树种选择是次要因素(解释率11%~17%)。石山梯地人工林的有害草本种类多于坡地,梯地的有害灌木种类少于坡地。石山人工林的有害植物种类少于封山育林地。
Based on the survey data of plantation community in Shishan, Guangxi, nine habitat variables were studied using two-way indicator species classification (TWINSPAN), redundancy analysis (RDA) and canonical correspondence analysis (CCA) Sexual, herbaceous and shrub plant composition. The results showed that slope position was the most important factor influencing the species composition diversity of Shishan plantation. The dew rate and gradient had the most significant impact on the distribution of harmful species in Shishan plantation. The main determinant of understory vegetation composition of Shishan artificial forest is habitat factor (interpretation rate 23% -55%), while tree species selection is the secondary factor (interpretation rate 11% -17%). There are more harmful species of herbaceous plantations in the mountainous hilltops than in the sloping lands, and fewer harmful shrubs in the sloping lands. Shishan plantations of harmful plants less than the closure of Hillsides.