基于GS＋的大黄枯叶蛾卵的空间分布关系  

Spatial Distribution of Trabala vishnou gigantina Eggs with GS+

作　　者：章一巧[1,2] 刘永华[1] 宗世祥[1] 陆鹏飞[1] 齐连珍 骆有庆[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]上海市绿化管理指导站,上海200020 [3]吴起县林业站,陕西717600

出　　处：《林业科学》2013年第10期100-105,共6页Scientia Silvae Sinicae

基　　金：林业公益性行业科研专项(201004003);“十二五”国家科技支撑计划项目(2012BAD19B07);国家自然科学基金项目(31270693)

摘　　要：基于GS+软件,应用地统计学方法对大黄枯叶蛾卵的空间分布关系进行研究。结果表明:63.2%的大黄枯叶蛾卵块被产在雌茧上,且卵在沙棘上的平均高度为66.5 cm,卵距最近雌茧的平均距离为22.9 cm;沙棘林中大黄枯叶蛾卵的空间依赖范围为95.782 m,空间变异值为0.680,最佳拟合模型为高斯模型,呈聚集分布;卵块的空间分布模拟结果同雌蛹最为接近,两者在空间分布上存在一定的跟随性。大黄枯叶蛾种群密度深受8月下旬至9月中旬气温与降水的影响。In recent years,Trabala vishnou gigantina（ Lepidoptera： Lasiocampidae） had caused enormous economic losses in the northwest drought region of China,where Hippophae rhamnoides forests were distributed. As one of the most important defoliators in that area,larvae of T. vishnou gigantina feeding on tender leaves primarily caused damage to the crown layers of the trees. Using Software GS ＋ and geostatistics methods,we investigated the spatial distribution of eggs of T. vishnou gigantina in pure H. rhamnoides forest. Results showed that adult moths preferred to spawn on the female pupae,with an incidence of 63. 2%. Eggs gathered mainly at heights of 66. 5 cm on the tree stems. Average distance between eggs and nearby female pupae was 22. 9 cm. Analysis of isotropic variograms indicated that the distance of spatial dependence of eggs was 95. 782 m,while the intensity of local spatial continuity was 0. 680. Furthermore,semivariogram analysis revealed that the Gaussian model was fitted best to eggs distribution,implying an aggregation distribution. The maps derived from the Kriging interpolation exhibited that the spatial distribution of T. vishnou gigantina eggs was similar to that of the female pupae. Taking climatic factors into consideration,we found that oviposition of T. vishnou gigantina was affected by the temperature and rainfall from late-August to mid-September. This research provided a theoretical basis for controlling T. vishnou gigantina,particularly in predicting their potential distribution areas and future possible population density.

关 键 词：大黄枯叶蛾 卵 空间分布 地统计学 气象因子 

分 类 号：S718.7[农业科学—林学]