| 三种松毛虫混合种群幼虫抽样技术的研究 |
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| 引用本文： | 张连翔,刘学增.三种松毛虫混合种群幼虫抽样技术的研究[J].河北林果研究,1992(4). |
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| 作者姓名： | 张连翔 刘学增 |
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| 作者单位： | 辽宁省喀左县森防检疫站
(张连翔)，辽宁省喀左县大城子乡林业站(刘学增) |
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| 摘 要： | 本文应用Taylor幂法则模型中的两个参数a和b,就3种松毛虫混合种群幼虫的抽样技术进行了以下几个方面的研究:①最适理论抽样数的确定;②种群密度的简易估计;③复序贯抽样技术;④简易序贯抽样技术;⑤简单随机抽样最适样方大小的确定;⑥资料代换方法。此外,文中还就种群聚集临界密度进行了探讨。为进行松毛虫种群动态的研究和实施综合管理决策,提供了优化的抽样设计,收到了良好的应用效果.
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| 关 键 词： | 松毛虫幼虫 混合种群 抽样技术 |
STUDIES ON LARVA SAMPLING TECHNIQUE IN MIXLD POPULATION OF THREE KINDS OF PINE CATERPILLAR |
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| Zhang Lianxiang.STUDIES ON LARVA SAMPLING TECHNIQUE IN MIXLD POPULATION OF THREE KINDS OF PINE CATERPILLAR[J].Hebei Journal of Forestry and Orchard Research,1992(4). |
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| Authors: | Zhang Lianxiang |
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| Abstract: | In this paper, larva sampling techniques for mixed population of three kinds of pine caterpilla are studied in the following aspectsusing the two parameters of a and b in Taylor Function model : 1)determination of theoretical sample number, 2) simple and easy calculation of popul-ation density, 3) technique of complicated sequential sampling, 4) technique of simple sequential sampling, 5) determination of optimum plot size for simple random sampling, 6) way of data substitution.Meanwhile, the critical crowing level is also discused in this paper.These provide better sampling designs for the studies of population dynamics and the intergrated management of these insects, and has shown better results in application. |
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| Keywords: | larva of pine caterpilla mixed popu altion sampling technique |
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