| 杨树蛀干害虫的动态分析 |
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| 引用本文： | 邵崇斌,周嘉熹.杨树蛀干害虫的动态分析[J].西北林学院学报,1992,7(3):62-68. |
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| 作者姓名： | 邵崇斌 周嘉熹 |
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| 作者单位： | 西北林学院林学系，西北林学院森林资源保护系，西北林学院林学系，咸阳市森防站，咸阳市森防站 87级毕业生，榆林治沙所 |
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| 摘 要： | 本文采用平均虫口密度、拥挤度和被害株率作为标准地的指标,对杨树蛀干害虫的危害状况作动态分析。以模糊等价关系作为初始聚类,ISODATA方法最后划分为五类,针对不同的危害类型采用不同的管理与防治措施。
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| 关 键 词： | 蛀干害虫 数量动态 分析 杨树 |
Dynamic Analysis of Poplar Stem Borer |
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| Shao Chongbin.Dynamic Analysis of Poplar Stem Borer[J].Journal of Northwest Forestry University,1992,7(3):62-68. |
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| Authors: | Shao Chongbin |
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| Abstract: | Dynamic analysis of poplar stem borer was done with population density , crowded level and percentage of damaged trees on sample plots. By using Fuzzy equivalent relation as initial classification, and then by ISODATA method, 30 sample plots were classified into five categories. Different management and control measures should be taken according to different category. |
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| Keywords: | stem borer dynamic state of quantity space distribution cluster analysis |
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