【摘要】 2007年4~10月,在内蒙古呼和浩特郊区和锡林郭勒草原分别对长爪沙鼠、黑线仓鼠、五趾跳鼠和布氏田鼠进行了种群数量动态和预测研究。根据2007年实地调查数据,利用已经建立的预测模型,分别对上述4种鼠2008年的数量作出预测:预测2008年上述两地长爪沙鼠数量均不多,不致形成危害;黑线仓鼠2008年春季捕获率为0.97±0.48%~1.49±0.59%,秋季捕获率为0.52%,也不会形成危害;2007年五趾跳鼠捕获率0.06%,预测2008年该鼠数量也不多,不会造成危害;锡林郭勒草原2007年布氏田鼠年捕获率为1.67%,预测2008年布氏田鼠数量仍处在低谷期,不会形成大面积危害,但局部地方,如锡林浩特市郊的草场春季可能增多,应作好防治的准备工作。建议建立草原鼠类数量长期监测点,开展预测预报,在鼠的数量上升之前采取主动防治措施,把鼠密度长期控制在危害阈值之下,实现草原鼠害的持续控制。更多还原

【Abstract】 The predominant rodents are clawed jird(Meriones unguiculatus),striped hamster(Cricetulus barabesis),mongolian five-toed jerboa(Allactaga sibirica) and brandt’s vole(Lasiopodomys brandti) on grassland and farmland of Hohhot and Xiliguole League in north China.The population dynamics and prediction of the rodents were studied to establish the model of prediction.Based on the data investigated in 2007 and the established model of prediction,the numbers of four rodents were predicted in 2008.Clawed jird were not captured by 11200 trap-days in Hohhot areas and one of clawed jird was captured only by 1800 trap-days on Xilinguole typical steppe,the capture rate was 0.06% in 2007.It was predicted that the numbers of clawed jird were little in 2008.The capture rate of striped hamster was from 0.97% to 1.49% in Spring and 0.52% in Autumn in 2008.Mongolian five-toed jerboa were captured,and capture rate was 0.06% on both Hohhot areas and Xilinguole typical steppe in 2007,it was predicted that the number of Mongolian five-toed jerboa was little in 2008.An average capture rate of Brandt’s vole was 1.67% in 2007,it was predicted that their numbers were less in 2008 on Xilinguole typical steppe.But,the number of Brandt’s voles maybe increased on Xilinhot grassland,which should be controlled in spring of 2008.It was suggested to establish investigation station to predict population number of rodents on different typical grassland and to take preventive measures before the first increasing stages of number of the population of rodents to control the population density of rodents under threshold of harm for long term to realize continuing control of rodents on grassland.更多还原