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[目的]研究柠条豆象卵块及幼虫种群的空间分布格局和空间相关性。[方法]应用地统计学原理和方法调查柠条豆象卵和幼虫数量,并对所得数据进行分析。[结果]柠条豆象卵块和幼虫种群最优拟合模型为圆形模型,空间分布格局均为聚集分布,存在空间相关性,变程范围分别为18.899～62.922和13.464～47.455。采用普通Kriging插值法对柠条豆象卵块与幼虫种群分布进行模拟,显示其分布均具有明显的聚集团块,斑块核心区聚集强度明显高于边缘,且具各向异性,西南至东北方向聚集强度高于东南至西北方向。[结论]柠条豆象卵块和幼虫种群空间分布格局均为聚集分布,增加柠条林中柠条的株距和斑块破碎化对柠条豆象的种群发生有一定的控制作用。
[Objective] The research aimed to study the spatial distribution pattern and spatial correlation of egg masses and larvae in Caragana korshinskii. [Method] The geo-statistic principle and method were used to investigate the numbers of eggs and larvae of Caragana korshinskii and the data were analyzed. [Result] The best fitting model of the egg masses and the larvae of the Caragana korshinskii was a circular model. The spatial distribution patterns were all clustered and distributed, with spatial correlations ranging from 18.899 to 62.922 and 13.464 to 47.455. The population distribution of egg masses and larvae of Caragana korshinskii was simulated by ordinary Kriging interpolation. The results showed that the distributions of the eggs and the larvae of the Caragana korshinskii were obviously aggregated. The agglomeration strength in the core area of the Caragana korshinskii was significantly higher than that of the edges and anisotropy. From southwest to northeast Aggregation intensity is higher than southeast to northwest. [Conclusion] The spatial distribution patterns of the egg masses and larvae of Caragana korshinskii were all aggregated. Increasing the plant spacing and the fragmentation of Caragana korshinskii in Caragana korshinskii had some effects on the population occurrence of Caragana korshinskii.