| 狭翅雏蝗种群动态的模糊聚类分析 |
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| 引用本文： | 刘长仲,冯光翰.狭翅雏蝗种群动态的模糊聚类分析[J].草地学报,1997,5(2):108-112. |
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| 作者姓名： | 刘长仲 冯光翰 |
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| 作者单位： | 甘肃农业大学植物保护系, 兰州 730070 |
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| 基金项目： | 农业部“八五”攻关课题 |
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| 摘 要： | 本文作者用平均密度(M)、聚集度指标(M*/M)、有虫样方出现频率(F),对狭翅雏蝗在草原的种群动态进行了模糊聚类分析。结果表明,狭翅雏蝗发生的动态规律可分为四个状态集。其中发生在前期末既是预测预报的关键时期,也是药剂防治的有利时机。
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| 关 键 词： | 狭翅雏蝗 种群动态 模糊聚类分析 |
Fuzzy Cluster Analysis of The Population Dynamics of Chorthippus dubius (Zubovsky) |
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| Liu Changzhong, Feng Guanghan.Fuzzy Cluster Analysis of The Population Dynamics of Chorthippus dubius (Zubovsky)[J].Acta Agrestia Sinica,1997,5(2):108-112. |
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| Authors: | Liu Changzhong Feng Guanghan |
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| Institution: | Department of Plant Protection, Gans Agricultural University, Lanzhou 730070 |
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| Abstract: | Fuzzy cluster analysis was carried out. with the data of mean densities, indices of patchiness and rates of occupied plot in different periods of Chorthippus dubius (Zubovsky)which damaged rate of occupied plot dominantly on Ganjia high mountain grassland in Xiahe County, Gansu province. The periods of its population dynamics was studied. The results showed that the population dynamics of this grasshopper could be divided into four distinct periods, in which the second one, the young nymph stage, was the key time for population prediction and chemical control. |
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| Keywords: | Chorthippus dubius Population dynamics Fuzzy cluster analysis |
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