| 草原蝗虫空间格局及其抽样技术的研究 |
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| 引用本文： | 冯今,秦冬梅,马隆喜.草原蝗虫空间格局及其抽样技术的研究[J].草业学报,2004,13(2):118-122. |
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| 作者姓名： | 冯今 秦冬梅 马隆喜 |
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| 作者单位： | 甘肃农业大学草业学院,甘肃,兰州,730070;甘肃农业学校,甘肃,兰州,730020;夏河县草原站,甘肃,夏河,747100 |
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| 摘 要： | 根据改进的m*=α′ β′m γm2模型和聚集度指标,研究了草原混合种群的空间分布.结果表明,蝻期蝗虫呈聚集分布,在聚集的个体群内,个体间是相互排斥的.成虫期分布的基本成分是个体群,个体间相互吸引,而个体群的分布是均匀的.以聚集度(m*/m)的时序动态表明,蝗蝻初期呈均匀分布,盛期呈聚集分布,成虫期为均匀分布.在测报和防治中,混合种群的理论抽样数为20～40个样点.
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| 关 键 词： | 蝗虫 草原 空间分布 时序动态 抽样方法 |
| 文章编号： | 1004-5759(2004)02-0118-05 |
| 修稿时间： | 2003年5月27日 |
Spatial pattern of grassland locusts and sampling technique |
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| FENG Jin,QIN Dong-mei,MA Long-xi.Spatial pattern of grassland locusts and sampling technique[J].Acta Prataculturae Sinica,2004,13(2):118-122. |
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| Authors: | FENG Jin QIN Dong-mei MA Long-xi |
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| Institution: | FENG Jin~1,QIN Dong-mei~2,MA Long-xi~3 |
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| Abstract: | Based on the improved model and an index of assemblage degree, the spatial pattern of grassland locusts of mixed population was studied. Nymphs showed an assembling distribution, but individuals within gathering colonies repelled one another. The basic component of the adult distribution was the individual colony, but colonies attracted one another. The assemblage degree over time showed uniform distribution in the early nymph stage, assembling distribution during the flourishing period, and uniform distribution during adulthood. For forecasting and control, the mixed-population theoretical sample number determined was 20-40 sites. |
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| Keywords: | locust grassland spatial pattern dynamics of time sequence sampling method |
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