Tube locations of the red imported fire ant (RIFA)

Solenopsis invicta Buren, also known as the red imported fire ant (RIFA), has had a large negative impact on human and livestock health. However, few studies have further investigated the influence of human land use, which is an important factor affecting the habitats of insects, on the expansion of RIFAs. In addition, there is a lack of knowledge of the empirical associations between RIFA diffusion and land use within countries. Therefore, the objectives of this study were to provide an approach to delineate the areas of RIFA infestations and explore how land-use influences the spatiotemporal diffusion of S. invicta. We used RIFA data from 2008 to 2015 from the RIFA surveillance system, which was conducted by the National RIFA Control Center in Taiwan. Two regions in Taiwan with different RIFA infestation levels were investigated. The ordinary kriging method was applied to show the spatial intensity of RIFAs and the extreme distance estimator method was applied to determine the critica...

Solenopsis invicta Buren，又名红外来火蚁（red imported fire ant, RIFA），已对人类及家畜健康造成了显著的负面影响。然而，鲜有研究进一步探讨作为影响昆虫栖息地的关键因素之一的人类土地利用，对红外来火蚁扩散的作用。此外，当前仍缺乏针对国家尺度内红外来火蚁扩散与土地利用之间经验性关联的认知。因此，本研究的核心目标在于提出一种划定红外来火蚁侵染区域的方法，并探究土地利用如何影响S. invicta的时空扩散。本研究采用了由中国台湾地区全国红外来火蚁防控中心（National RIFA Control Center）在2008至2015年间开展的红外来火蚁监测系统所采集的数据。研究针对中国台湾地区两个红外来火蚁侵染程度存在差异的区域展开了调查。本研究运用普通克里金法（ordinary kriging）以展示红外来火蚁的空间分布强度，并采用极端距离估计法（extreme distance estimator）以确定临界……