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为深入了解影响茶园节肢动物群落多样性的因子,本文对在茶园地面种植长节耳草Hedyotis uncinella Hook & Arn(茜草科,耳草属)的复合茶园茶树生境节肢动物类群多样性指数、物种丰富度、类群均匀度、物种优势度指数和类群优势集中性指数5个主要特征值之间的关系进行了因子分析与通径分析。结果显示:茶树生境节肢动物类群5个主要特征值可综合为三个主份量。第一主份量代表类群多样性指数和均匀性;第二主份量集中体现物种丰富度;第三主份量代表优势度指数,它们对方差的贡献率分别为50.279％、26.920％和22.466％。复合茶园节肢动物类群多样性与节肢动物类群丰富度和天敌类群丰富度呈极显著的正相关,而同类群优势集中性呈极显著的负相关。因此,要提高茶园节肢动物类群的多样性可通过营造复合茶园生境来增加节肢动物类群物种丰富度和天敌类群物种丰富度而减少物种优势集中性来实现。
In order to further understand the factors influencing the diversity of arthropod communities in tea plantations, this paper analyzed the diversity index of arthropod arthropod populations in tea plantations of tea plantations of Hedyotis uncinella Hook & Arn (Rubiaceae) in the tea plantation, Degree, population uniformity, species dominance index and cluster dominant concentration index five main characteristics of the relationship between factor analysis and path analysis. The results showed that the five main eigenvalues of arthropod groups in tea habitats can be integrated into three main components. The first principal component represents the taxonomic diversity and uniformity of the taxa. The second major component reflects the species richness, while the third major component represents the dominance index. Their contribution rates to the variance are 50.279%, 26.920% and 22.466%, respectively. The diversity of arthropod groups in the tea plantation was significantly and positively correlated with the abundance of arthropod groups and the abundance of natural enemies, while the dominant concentration of the same group showed extremely significant negative correlation. Therefore, to increase the diversity of arthropod groups in tea plantations can be achieved by creating composite tea plantation habitats to increase species richness of arthropod groups and species richness of natural enemy groups, and reduce the concentration of dominant species.