【摘要】 生境多样性是自然界延缓有害生物扩散和毁灭性群体形成的重要机制。根据有害生物侵扰扩散的基本特征,建立了有害生物侵扰在多样化生境中的一种随机扩散算法,研制了相应的网络计算软件PercoModel(c)。该软件由8个Java类和一个HTML文件组成,可运行于多种操作系统和网络浏览器上,可读取多种类型的ODBC数据库文件,如MSAccess,Excel,FoxPro,dBASE等。该算法及软件可用于:(1)分析生境多样性,如不同生境的镶嵌格局和植物分布对有害生物扩散过程及其结局的影响;(2)分析生境和植物镶嵌格局对植物和昆虫疾病流行的影响;(3)研究生境和植物镶嵌格局对火灾蔓延的影响;(4)确定有害生物造成的损失及分布,以及探明最佳的生境和植物镶嵌格局等等。更多还原

【Abstract】 Habitat diversity is the important mechanism for retarding the percolation of pest perturbation and the emergence of destructive pest populations.Based on the basic features of pest percolation in the field,a stochastic model for the percolation ofpest perturbation and its network computing software,PercoModel (c) ,was developed.PercoModel (c) is made of8Java classes and1HTML file.PercoModel (c) can be run on various operational systems,platforms and web browsers,and can read various ODBC linked databases such as MS Access,Excel,FoxPro,dBASE et al.The software can be used to:(1)analyse the effects exerted by habitat diversity,e.g.,different habitat arrangement patterns and vegetable arrangements,on percolation of pest perturbation;(2)determine the effects exerted by habitat diversity on plant epidemiologic diseases and insect diseases;(3)approach the effects exerted by habitat diversity on fire percolation;(4)determine the yield loss caused by pest and the spatial distribution of the loss,and analyse the optimal habitat arrangement patterns for reduce the loss,et al.更多还原