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通过运用二种回归方法和六种聚集度指标对黑角直缘跳甲幼虫的空间格局和抽样技术进行了研究。所有的指标表明黑角直缘跳甲幼虫在林间呈聚集分布,分布的基本成分是个体群,且个体间相互吸引。在空间分布型研究的基础上提出了理论抽样数和序贯抽样方案。通过不同抽样方式的精确度比较,表明对角线抽样方式最佳。
The spatial pattern and sampling technique of T. lacteus larvae were studied by using two regression methods and six clustering indices. All the indexes indicated that the larvae of T. lanceolata were aggregated and distributed in the forest. The basic components of the distribution were individual groups, and the individuals attracted each other. Based on the spatial distribution research, the theoretical sampling number and sequential sampling scheme are proposed. Comparing the accuracy of different sampling methods shows that the diagonal sampling method is the best.