2003•Yunnan Forestry Science and TechnologyRequires access

Study of Vertical Distribution of Tomicus piniperda and T. minor in Stem of Pinus yunnanensis

Liu Jun

Abstract

Taking the Pinus yunnanensis trees of Qujing prefecture attacked by Tomicus as target, the law of Tomicus piniperda and T. minor distributed at stem was studied. The pattern of overall distribution of these two pests, and crowding distribution of each species were proposed. The percentage of each pest at different parts of stem was studied and analyzed, which provided the study of forecast and aggregation pheromone with a basis.

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Key concepts: Pinus yunnanensis, Biology, Pinus <genus>, PEST analysis, Distribution (mathematics), Botany, Mathematics, Mathematical analysis