【摘要】 目的研究生态保留带地栖息环境质量对普通田鼠活动格局的影响和普通田鼠对周围农作物的扩散。方法用新型无线电自动跟踪器从2003年5~10月和2004年3~9月研究了生态保留带中的普通田鼠种群。结果普通田鼠的巢区大小分别在125 m2(最小凸起多边形方法)和30 m2(Kernel法),巢区大小比较稳定,巢区日间重叠率达到90%左右,巢区基本在生态保留带之内,包括不同核心区;夏天普通田鼠的白日活动比较活跃,包括多阶段活动格局,阶段间隔时间为1.7 h。结论生态保留带对普通田鼠提供高质量的栖息环境,持续高种群密度,对周围农地不会产生危害。更多还原

【Abstract】 Objective To assess the influence of set aside on the spatio-temporal behavior of voles and their impact on adjacent crop fields.Methods A new system for automatic radio tracking was used which allowed tracking at 1 min intervals and up to 1 000 bearings per vole per day.A common vole population living in a set aside was monitored from May to October 2003 and from March to September 2004.Results\ Voles showed small home ranges with a median size of 125m~2(minimum convex polygon) and 30m~2(Kernel),respectively.Home ranges were stable with a median overlap of 90% for consecutive days,were almost exclusively within the set aside and contained several core areas per range.A poly phasic activity pattern with a phase length of 1.7 h was found during summer with a trend towards diurnal activity.Conclusions Overall set asides were high quality habitats for voles and sustained high population densities without increased risk of voles dispersing into adjacent fields.更多还原