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基于模糊聚类法的亚洲小车蝗种群空间格局分析
引用本文:胡靖,张廷伟,刘长仲,韩天虎,代健聪,陈威,王小强.基于模糊聚类法的亚洲小车蝗种群空间格局分析[J].甘肃农业大学学报,2012,47(3):62-66.
作者姓名:胡靖  张廷伟  刘长仲  韩天虎  代健聪  陈威  王小强
作者单位:1. 甘肃农业大学资源与环境学院,甘肃兰州,730070
2. 甘肃农业大学草业学院,甘肃兰州,730070
3. 甘肃省草原技术推广总站,甘肃兰州,730010
4. 甘肃省肃南县草原站,甘肃张掖,734400
基金项目:公益性行业(农业)科研专项,甘肃省农牧厅
摘    要:根据平均拥挤度、聚块性指标、Morisita扩散型指数、聚集指标和扩散系数5项聚集度指标,分析了肃南县高山草原亚洲小车蝗种群的空间分布,并运用模糊聚类法对其空间格局进行了研究.结果表明:亚洲小车蝗种群的发生初期和末期为2个特殊发育阶段,空间格局表现为聚集分布,高龄蝗蝻和成虫混合发生期为均匀分布,在蝗蝻出土和交配产卵过程中表现为聚集分布.

关 键 词:亚洲小车蝗  空间格局  聚集度指标  模糊聚类分析

Analysis on the population spatial distribution of Oedaleus decorus asiaticus by fuzzy cluster method
HU Jing , ZHANG Ting-wei , LIU Chang-zhong , HAN Tian-hu , DAI Jian-cong , CHEN Wei , WANG Xiao-qiang.Analysis on the population spatial distribution of Oedaleus decorus asiaticus by fuzzy cluster method[J].Journal of Gansu Agricultural University,2012,47(3):62-66.
Authors:HU Jing  ZHANG Ting-wei  LIU Chang-zhong  HAN Tian-hu  DAI Jian-cong  CHEN Wei  WANG Xiao-qiang
Institution:1.College of Resources and Environmental Sciences,Gansu Agricultural University,Lanzhou 730070,China; 2.College of Pratacultural Science,Gansu Agricultural University,Lanzhou 730070,China;3.General Grassland Working Station of Gansu Province,Lanzhou 730070,China; 4.Sunan Grassland Station,Zhangye 734400,China)
Abstract:The spatial distribution of Oedaleus decorus asiaticus in Sunan high mountion grassland was surveyed and analyzed with five indexes of aggregation,which include crowded index,diffused coefficient,diffused index,swarm index and Kuno index.Fuzzy clustering method was carried out with the data of mean densities,indexes of aggregation and occupied plot rates.The results showed that the population spatial distribution of this grasshopper could be divided into two types.The initial stage of hatching and the last stage of adult were the particular stages,the spatial distribution of the two stages belonged to an aggregative distribution.In the mixed occurring stage of nymph of three to five instars and the stage of adult,the population distribution was uniform.In the course of hatching and spawning,the population showed an aggregated distribution.
Keywords:Oedaleus decorus asiaticus  spatial distribution  aggregation index  fuzzy cluster method
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