Plague is a virulent infectious disease in China. In this study, ＇3S＇ technology was used to perform spatial autocorrelation analysis and spatial interpolation analysis for Spermophilus dauricus （S. Dauricus, a spe...Plague is a virulent infectious disease in China. In this study, ＇3S＇ technology was used to perform spatial autocorrelation analysis and spatial interpolation analysis for Spermophilus dauricus （S. Dauricus, a species of ground squirrel） captured in Manchuria City in 2015. The results were visually inspected. During the two-month （May to July） plague surveillance in 2015, 198 S.展开更多
Rodents are the main host animals that spread plague, and Spermophilus dauricus（S. dauricus） is the most common rodent in North China. In this study, a rodent density survey was carried out in China＇s Jilin Provinc...Rodents are the main host animals that spread plague, and Spermophilus dauricus（S. dauricus） is the most common rodent in North China. In this study, a rodent density survey was carried out in China＇s Jilin Province from April to August 2005. Moran＇s I and semivariogram curves were used to investigate the spatial distribution characteristics of the sampling data. We found that the spatial auto-correlation index was low and failed to generate a meaningful semivariogram curve. In this case, commonly used interpolators, such as kriging, were not suitable for mapping density over the study area. However, the Sandwich model, which is based on spatial stratified heterogeneity, could be applied to our data. Our results showed that the type of soil and land use significantly influenced the distribution of rodent density, and the interactive effect of these variables was much stronger than that of each variable alone. The Sandwich-estimated rodent density map showed that rodent density increased from the southeast to the northwest in Jilin Province. Finally, a framework of a rodent density survey using the Sandwich model was introduced.展开更多
基金supported by the National Natural Science Foundation of China(Grant no.83160430)the National Key Scientific Instrument and Equipment Development Projects of China(Grant no.2013YQ14037106)
文摘Plague is a virulent infectious disease in China. In this study, ＇3S＇ technology was used to perform spatial autocorrelation analysis and spatial interpolation analysis for Spermophilus dauricus （S. Dauricus, a species of ground squirrel） captured in Manchuria City in 2015. The results were visually inspected. During the two-month （May to July） plague surveillance in 2015, 198 S.
基金National Natural Science Foundation of China,No.41531179No.41421001+2 种基金No.41271404MOST,No.2016YFC1302504Special Scientific Research Fund of Public Welfare Profession of China,No.GYHY20140616
文摘Rodents are the main host animals that spread plague, and Spermophilus dauricus（S. dauricus） is the most common rodent in North China. In this study, a rodent density survey was carried out in China＇s Jilin Province from April to August 2005. Moran＇s I and semivariogram curves were used to investigate the spatial distribution characteristics of the sampling data. We found that the spatial auto-correlation index was low and failed to generate a meaningful semivariogram curve. In this case, commonly used interpolators, such as kriging, were not suitable for mapping density over the study area. However, the Sandwich model, which is based on spatial stratified heterogeneity, could be applied to our data. Our results showed that the type of soil and land use significantly influenced the distribution of rodent density, and the interactive effect of these variables was much stronger than that of each variable alone. The Sandwich-estimated rodent density map showed that rodent density increased from the southeast to the northwest in Jilin Province. Finally, a framework of a rodent density survey using the Sandwich model was introduced.
