| 马尾松毛虫空间分布型及其在实践上的应用 |
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| 引用本文： | 李友恭,吴敬.马尾松毛虫空间分布型及其在实践上的应用[J].福建林学院学报,1990,10(3):243-255. |
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| 作者姓名： | 李友恭 吴敬 |
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| 作者单位： | 福建林学院
(李友恭，陈顺立，洪伟，罗佳，邹守梅)，福建经济管理干部学院
(吴敬)，福建省福鼎县林业局
(李如泽)，福建省南平市林业局(赵芳) |
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| 摘 要： | 本文运用频数分布法,聚集度指标法和相关系数法研究了马尾松毛虫(Dendrolimus punctatus Walker)卵、幼虫和蛹的空间分布型。结果表明,卵、小幼虫、大幼虫和蛹的分布型均属于负二项分布。五种抽样方法比较结果,棋盘式取样法最好。根据Iwao方法分析并计算了不同虫口密度下林间调查的最适取样数,进行了序贯抽样以及虫口密度与有虫株率关系的研究。
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| 关 键 词： | 马尾松毛虫 空间分布型 抽样方法 序贯抽样 |
Spatial Distribution Patterns of the Pine Caterpillar ( Dendrolimus Punctatus Walker ) and Its Application in Practice |
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| Li yougong Wu jing Chen shunli Hong wei Li ruze Luo jia Zhao fang Zou shoumei. Fujian Forestry College,. Fujian Cadre College of Economic Management,. Forest Bureau of Fuding County,. Forest Bureau of Nanping City.Spatial Distribution Patterns of the Pine Caterpillar ( Dendrolimus Punctatus Walker ) and Its Application in Practice[J].Journal of Fujian College of Forestry,1990,10(3):243-255. |
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| Authors: | Li yougong Wu jing Chen shunli Hong wei Li ruze Luo jia Zhao fang Zou shoumei Fujian Forestry College Fujian Cadre College of Economic Management Forest Bureau of Fuding County Forest Bureau of Nanping City |
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| Institution: | Li yougong~1 Wu jing~2 Chen shunli~1 Hong wei~1 Li ruze~3 Luo jia~1 Zhao fang~4 Zou shoumei~11. Fujian Forestry College
2. Fujian Cadre College of Economic Management
3. Forest Bureau of Fuding County
4. Forest Bureau of Nanping City |
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| Abstract: | Spatial distribution patterns for egg-masses, small larvae, large larvae and pupae of the pine caterpillar were measured by the method of frequency distribution, means of several inde es of aggregation and corelation coefficient method in Fujian Province. Frequency distribution of the egg-masses,small larvae,large larvae and pupae obeyed aggregation distribution. The results of five sampling methods showed that the method of scattering proved to be ethe best.Based on Iwao's methods the optimal sam ling number of forest survey was analysed and calculated. The sequential analysis, the relationsnip between the percentage of plants with larvae or pupae and mean nopulation density were also studied. |
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| Keywords: | the pine caterpillar spatial distribution pattern sampling method sequential sampling |
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