Experiments and invastigation had been conducted in three counties for five sites in Guoluo Prefecture.The results indicated that average density of plateau pika was 227Ind/0.25hm^2 in grassland damaged by plateau pik...Experiments and invastigation had been conducted in three counties for five sites in Guoluo Prefecture.The results indicated that average density of plateau pika was 227Ind/0.25hm^2 in grassland damaged by plateau pika for five years in Guoluo region.The ratio of sex for female/male was not 1∶1,and the average value for five years was 1.25∶1.In addition,plateau pika reproduce once every year in Guoluo region.展开更多
文摘Experiments and invastigation had been conducted in three counties for five sites in Guoluo Prefecture.The results indicated that average density of plateau pika was 227Ind/0.25hm^2 in grassland damaged by plateau pika for five years in Guoluo region.The ratio of sex for female/male was not 1∶1,and the average value for five years was 1.25∶1.In addition,plateau pika reproduce once every year in Guoluo region.
