东亚飞蝗发生程度的主成分分析及聚类分析研究初报  

Preliminary study on principal components analysis and clustering analysis for occurrence degree of Locusta migratoris manilensis

作　　者：程亚樵[1] 曹雯梅[1] 郭线茹[2] 孙元峰[1] 卢新萍 

机构地区：[1]河南农业职业学院,河南中牟451450 [2]河南农业大学植保学院,河南郑州451400 [3]河南省中牟县植保站,河南中牟451450

出　　处：《中国植保导刊》2010年第3期5-9,共5页China Plant Protection

基　　金：河南省科技攻关项目子项目"河南河泛蝗区东亚飞蝗灾变规律;监控技术及防治新技术研究"(0424080008)

摘　　要：利用主成分分析和聚类分析,介绍了东亚飞蝗发生程度及对不同发生程度进行分类的方法。主成分分析选出秋残蝗最高密度、夏蝗达标面积、秋残蝗面积、夏蝗发生面积等4个主因子。这4个因子能在84.56%的程度上反映东亚飞蝗的发生程度。聚类分析将东亚飞蝗20年的资料,在卡方距离近1.68处聚成3大类,分析结果与实际情况非常吻合。依据聚类分析结果可对东亚飞蝗进行分类综合防治。Occurrence degree of Locusta migratoris manilensis and category of different degree were introduced through principal components analysis and clustering analysis. Major factors of highest density of autumnal survival locust, area up to par of estival locust, area of autumnal survival locust and occurring area of estival locust were selected through principal components analysis, which reflected occurrence degree of Locusta migratoris manilensis at 84.56%.And 20-year-data of Locusta migratoris manilensis occurrence were analyzed through clustering analysis and clustered to 3 parts at 1.68.of chisquared distance, which resulted tally with the fact, and it can be applied to control Locusta migratoris manilensis.

关 键 词：东亚飞蝗 发生程度 主成分分析 聚类分析 

分 类 号：S431.3[农业科学—农业昆虫与害虫防治]