基于Clark-Evans最近邻体分析对果树主要害虫空间分布格局的分析(英文)

An analysis on the spatial distribution pattern of the main pests in U.S aprum garden——On the base of the nearest neighbor analysis

使用坐标调查法对美国杏李果园的5种主要害虫的空间分布格局进行调查,采用最近邻体分析方法分析,结果表明绣线菊蚜、山楂叶螨、李小食心虫为聚集分布,草履蚧a、金纹细蛾为随机分布。并采用点分布图、分散度指数和最近邻体分析结果进行比较,使用正态分布对试验结果进行检验,结果表明两者的拟合结果相同,说明Clark-Evans最近邻体分析法可以很好地对果园害虫的空间分布格局进行估计。

The spatial distribution pattern of the main posts in U.S Aprum garden are investigated by means of coordinate method,using the nearest neighbor analysis. The results showed that Aphis citricota, Tetranychus viennensis,Grapholitafunebrana are clump distribution, Drosicha corpulenta and Lithocolleti ringoniella are random distribution. The mapped points pattern of five pest populations are compared with the dispersion index and the nearest neighbor analysis, and the results are tested by the normal distribution,which shows both have the same results, and also proves that the nearest neighbor analysis are the best way to estimate the spatial distribution patterns.