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FOREST PEST MANAGEMENT STRATEGIES BASED ON COMMUNITY MODELS

Li Dianmo and Chen Xiaofeng
Coenoses
Vol. 5, No. 3 (Autumn 1990), pp. 125-129
Published by: Akadémiai Kiadó
Stable URL: http://www.jstor.org/stable/43461035
Page Count: 5
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FOREST PEST MANAGEMENT STRATEGIES BASED ON COMMUNITY MODELS
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Abstract

In this paper, several models of the dynamics and the interactions between community components of the pine forest are described: the pest population dynamics model (including development - temperature model and population size model), the tree leaf biomass and seasonal dynamics model, the wood volume growth model of pine trees, and models for the interactions between pest and tree, and between pest and pesticide spray. These models are used in management decision analysis. The main damage stages of pine caterpillars to trees are the 4 to 6 instars of larva. The degree of leaf damage has a strong influence on the survival rate of the pest. The wood volume growth rate is slowed after leaf damage. However, because trees of different ages have different resistance, the wood volume losses may differ. Management decisions depend on pest development stage, population level, tree age, leaf biomass and the economics of pesticide spray and wood harvest..

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