breadth index

基本解释

The main pest and natural enemy in the middle-later period of the wheat field with time niche breadth and the niche overlap index in Huixian municipality have been studied.
通过对辉县市麦田中后期主要害虫及天敌自然种群数量的调查，并运用时间生态位宽度和生态位重叠指数进行了分析研究。
The ecological response of subalpine meadow population to tourism disturbance on subalpine meadow on the south top of Wutai Mountain is studied by the index of niche breadth in the paper.
以五台山南台为例，利用生态位的宽度指数，研究了草甸种群对旅游干扰的生态响应。
Finally, the characteristics and connection strategies of generator are presented, and based on subsume index, a breadth-first algorithm for mining non-redundant association rule is proposed.
最后，讨论了生成子的性质及连接策略，并在包含索引的基础上，给出了一种宽度优先的无冗余关联规则挖掘算法。

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