李小食心虫种群空间格局的地统计学分析  

The Geostatistical Analysis of Population Spatial Patterns on Grapholita funebrana

作　　者：刘军和[1] 

机构地区：[1]黄淮学院农林科学系,河南驻马店463000

出　　处：《河南大学学报（自然科学版）》2010年第2期169-174,共6页Journal of Henan University:Natural Science

基　　金：国家自然科学基金(30760045);驻马店科技攻关计划项目资金(0610007)联合资助

摘　　要：利用坐标法抽样研究了李小食心虫的空间分布格局.研究结果表明,在李小食心虫卵块没有扩散之前单株卵量的分布呈均匀分布,但卵块本身是呈聚集分布的;不同虫态李小食心虫的空间格局随季节进行转化.李小食心虫个体间呈正空间相关,且个体间相互吸引,在各方向上存在空间周期性.幼虫空间格局呈聚集分布,采用行方向间隔变程随机抽样是替代平行跳跃法的很好抽样方法.采用克力格样本作局域估计,样本总体聚集强度增大,克力格样本局域估计优于调查样本.The spatial distribution pattern of Grapholita funebrana were investigated by means of coordinate method, the results showed that the distribution of Grapholita funebrana eggs was uniform before the eggs spreaded, but the egg itself is aggregated distribution. The spatial distribution changed with the seasons in different period. Individuals of Grapholita funebrana were positively space related, and attracted each other, there was space cyclical in any directions. The spatial pattern of the larvae was aggregation. The gap range random sampling was better than parallel jump method. Using the Kriging samples for local estimates, the aggregation of the overall samplings increased, using the Kriging samplings is superior to local estimates.

关 键 词：李小食心虫 空间分布格局 克力格估计 地统计学 半变异函数 

分 类 号：S114[农业科学—农业基础科学]