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对“永林公司”经营区不同森林经营模式物种多样性特征进行了比较研究。结果表明:在经营区内有植物222种,属于113属和72科。9种不同经营模式中不同生长型物种的丰富度存在着比较明显的差异,以灌木层物种丰富度最高,乔木层次之,而以草本层最低;不同经营模式的物种多样性基本表现为灌木层>乔木层>草本层。物种多样性指数和丰富度指数存在着密切的正相关。综合分析表明,块状利用模式的物种多样性最高,改良增效模式其次,而定向培育模式和保育补植模式的物种多样性最差,这也表明天然林的物种多样性比较好,人工林的物种多样性较差的一般规律。
The characteristics of species diversity in different forest management models in “Yong Lin Company” operating area were compared. The results showed that there were 222 plant species in the management area, belonging to 113 genera and 72 families. There were obvious differences in the richness of different growth species among the 9 different management modes. The species richness of the shrub layer was the highest, while that of the herb layer was the lowest. The species diversity of different management patterns was shrub layer > Arbor layer> Herb layer. There is a close positive correlation between species diversity index and abundance index. Comprehensive analysis showed that the lump utilization pattern had the highest species diversity, followed by the improved efficiency pattern, while the directional diversity pattern and the conservation seedling pattern had the lowest species diversity, which also indicated that the natural forest species diversity was better. The general law of poorer species diversity.