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在对邻体干扰指数模型进行推广的基础上，将其应用于分析林草生态系统（杜仲—三叶草、杜仲—黑麦草、杜仲—蒿类）中杜仲生长速度与草本植物邻体干扰强度的定量关系。结果表明，三叶草对杜仲生长的干扰属正效应，而黑麦草、蒿类为负效应；其干扰强度与草本植物数量性状（如盖度、生物量、高度）成正比；依据干扰强度所建立的效应模型可以解释杜仲新梢生长量变异的２５％～７０％，并能够反映草本植物对杜仲生长的干扰及其种内的自疏规律。
Based on the generalization of the model of neighbor interference index, this method was applied to the quantitative analysis of the relationship between the growth rate of Eucommia ulmoides and the neighboring intensity of herbaceous plants in the forest-grass ecosystem (Eucommia-Clover, Eucommia-Ryegrass, Eucommia-Artemisia) relationship. The results showed that the clover had a positive effect on the growth of Eucommia ulmoides, while the ryegrass and Artemisia both had a negative effect. The disturbance intensity was directly proportional to the quantitative traits (such as coverage, biomass and height) of herbaceous plants. The effect model can explain 25% -70% of the variation of the shoot growth of Eucommia ulmoides and can reflect the interference of herbaceous plants on the growth of Eucommia ulmoides and the self-evidencing rules within the species.