摘要
2007年对贺兰山西坡设置了14条调查样带,在岩羊的繁殖季节和冬季,对其种群进行了调查。其结果:贺兰山西坡春季岩羊平均密度为33只/km^2,西坡总量为29205只;冬季平均密度为34.9只/km^2,西坡总量为30886只。全年净增岩羊1681只,岩羊死亡率为3.09%。贺兰山西坡2007年现有岩羊总数为29144只。经分析认为贺兰山西坡岩羊种群结构合理,种群数量处于增长态势。本文为贺兰山西坡岩羊的保护与利用提供了最新依据。
In the breeding season of Blue Sheep and winter in 2007,Fourteen transects were set up in the west slope of Helan Mountain to investigate the Blue Sheep population.The investigation result shows that there are 33 Blue Sheep per square kilometer on average and 29205 Blue Sheep in the lump in spring,while in winter,the average density is 34.9 Blue Sheep per square kilometer,and there are 30886 Blue Sheep totally.Thus the number of Blue Sheep has increased by 1681over the breeding season with a mortality of ab...
出处
《内蒙古石油化工》
CAS
2008年第18期40-41,共2页
Inner Mongolia Petrochemical Industry
关键词
岩羊
调查
西坡
贺兰山
Blue Sheep
Investigation
West slope
Helan Mountain
