吉林省鼠疫自然疫源地黄鼠分布及数量预测

The dsribution and auantity forecast of S. dauricus on Jilin province plague natural focus

目的掌握黄鼠分布及其数量水平,为规划鼠疫监测及灭鼠重点地区提供依据。方法以行政区域和景观区域为单元设置调查点,按生境类型,以单公顷样方0.5%比例分层抽样方法进行黄鼠数量调查。结果以景观区域为基础,按地理生境预测黄鼠数量为1139930只,波动范围在793072～1488518只。结论通榆-双辽风沙草原区是吉林省黄鼠主要分布区,占预测鼠数的51.18%。镇赉县北大岗真草草原区、乾安黄黄土台地区,前郭、双辽风沙草原区和扶余县局部地区是我省黄鼠高密度分布区。

Objective To master distributions of S. dauricus and their quantity levels to provide basis for planning plague surveillances and major areas of mice killing. Methods Making quantity investigations of S. dauricus using administration and landscope divisions as a unit to set investigation points and according to landscope types and in sample proportion of 0.5% per hn patterns. Results Quantities of forecasting S. dauricus are 1 139 930 singles and forecasting limits are 793 072 to 1 488 518 singles using landscope divisions as a unit and combining landscope types . Conclusions S. dauricus in Jilin province mainly distribute in TongYu and ShuangLiao grasslands and occupy 51.18% of forecasting S. dauricus quantities. The higher density distributive regions of S. dauricus exist in BeiDa - gang grasslands ZhenLai county, HuangTu - tai region in Qian h , the grasslands in QianGuo and shuangLiao countries and some areas in FuYu county in Jilin province.