| 十一星瓢虫捕食棉蚜的种群动力学模型及其数值模拟 |
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| 引用本文： | 吴春光,魏玉敏.十一星瓢虫捕食棉蚜的种群动力学模型及其数值模拟[J].科学技术与工程,2009,9(2). |
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| 作者姓名： | 吴春光 魏玉敏 |
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| 作者单位： | 中央民族大学理学院,北京,100081 |
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| 摘 要： | 根据棉蚜、十一星瓢虫的生物学特性以及新疆棉区十一星瓢虫对棉蚜捕食作用的调查和实验数据,建立了十一星瓢虫捕食棉蚜的种群动力学理论模型.在模型中对捕食者─十一星瓢虫进行了虫态和年龄结构划分,用来模拟不同虫态和年龄结构瓢虫对蚜虫的捕食.运用有限差分法对建立的模型进行了数值模拟,将模拟结果与实际调查数据进行比较,验证了模型的准确性和实用性.
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| 关 键 词： | 十一星瓢虫 棉蚜 种群动力学模型 年龄结构 数值模拟 |
Population Dynamical Model and Numerical Simulation of the Predatism of Coccinella Undecimpunctata on Cotton Aphid Aphis Gossypii |
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| WU Chun-guang,WEI Yu-min.Population Dynamical Model and Numerical Simulation of the Predatism of Coccinella Undecimpunctata on Cotton Aphid Aphis Gossypii[J].Science Technology and Engineering,2009,9(2). |
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| Authors: | WU Chun-guang WEI Yu-min |
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| Institution: | School of Science;Central University for nationalities;Beijing 100081;P.R.China |
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| Abstract: | Based on both the Biological Characters of Coccinella undecimpunctata Linnaeus and Aphis gossypii and Field observations in the cotton fields of Xinjiang of Coccinella undecimpunctata preying cotton aphid Aphis gossypii,a predator-prey population dynamical model with age-structure is deduced.Using the tools of finite-difference method and matlab sofeware,simulated images is gain.The simulated results of the model are so close to the observational data,so it proved that the model is accurate and useful. |
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| Keywords: | Coccinella undecimpunctata Linnaeus cotton aphid Aphis gossypii population dynamical model age-structure numerical simulation |
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