马铃薯甲虫是世界公认的马铃薯毁灭性害虫，也是我国对外重大检疫对象，目前仅分布于新疆。该虫具有很强的扩散能力，其持续扩散进入我国马铃薯主产区的风险依然巨大，对我国马铃薯产业构成严重威胁。新疆绿洲呈“岛屿”状分布，景观均质化高，规模化和小农户两种耕作体系并存，导致我国马铃薯甲虫种群扩散机制问题完全不同于欧洲地区。本研究拟利用景观生态学、集合种群理论和分子生物学方法，分别从绿洲内部和绿洲之间两种景观尺度上，通过野外观测（GPS定位观测）、控制试验（田间扩散试验）和GIS技术，研究荒漠绿洲生境对马铃薯甲虫种群在生境斑块间迁移的影响，通过对绿洲间马铃薯甲虫种群遗传分化分析，筛选在不同景观尺度上对马铃薯甲虫种群扩散具有明显阻隔作用的关键景观因子。结合种群适生性分析，定量研究绿洲间马铃薯甲虫种群扩散规律，探明新疆荒漠绿洲生境对马铃薯甲虫种群扩散的影响机制，为马铃薯甲虫的生态调控提供理论依据和技术途径。

Colorado potato beetle is an important invasive alien species and destructive pest on potato crops worldwide, with a strong diffusion capacity. Xinjiang oasis distributes like "islands", withits high landscape homogenization. As a result, it is different of Colorado potato beetle population dispersal in Xinjiang compared with which in Europe. This study aimed to the impact of patch size, type of patch and its adjacent landscape features on the spread of Colorado potato beetle populations in habitat fragmentation. The genetic characteristics of Colorado potato beetle in different landscape scale with differences diffusion capacity were studied by amplifying multiple microsatellite loci. The genetic diversity of Colorado potato beetle with different diffusion ability will be quantitative analyzed, and to explore the expression between individual genetic differentiation genes of Colorado potato beetle populations in the diffusion behavior in the farmland landscape scale. Further, with the use of the key factors that have a barrier effect of landscape on dispersal of Colorado potato beetle, the control effects of barrier landscape wrer validation and evaluation measures on Colorado potato beetle population, optimized the ecological control of Colorado potato beetle. Based on these studies, proposed agricultural landscape of Colorado potato beetle control measures and programs are proposed. In this study, not only to habitat fragmentation under agricultural pest prevention and control measures to optimize the reference value, and contributed to a better understanding of habitat fragmentation on the spread of invasive species population and its response mechanism.