稻田田埂昆虫群落与田埂杂草关系的研究

为探索稻田田埂昆虫群落与田埂类型的关系,本文对田埂昆虫群落进行主分量分析和模糊聚类分析,结果表明:田埂昆虫群落类型与田埂类型有一定的联系。经典范分析,从定量上明确田埂昆虫群落与田埂类型的关系程度(r_1=0.8232),并得出田埂杂草高度是影响田埂昆虫群落的关键因子。

STUDIES ON THE RELATIONSHIP BETWEEN THE INSECT COMMUNITY AND THE GRASSES ON THE RICE FIELD RIDGES

In order to reveal the relationship between the insect community and the grasses on the rice field ridges, several mathematical analysis methods have been introduced into the studies in this paper. The method of Principal Components Analysis (PCA) is applied first to the ordination of samples of the insect community. Then, the Fuzzy Cluster Analysis is used to classify the types of the insect community. By these analysis, it is clear that the type of the insect community has the relationship with the type of the rice field ridges. After the application of Canonical Variate Analysis of the multivariate Statistical Analysis, it is more explicit that the number of species and diversity of the community is closely related to the height and the density of the grasses on the ridges and,i-the height and the width of the ridges of the rice fields ( r1 = 0.8232). The height of the grasses is also identified as the key-factor influencing the insect community in the grasses on the rice field ridges.