四川石渠县夏季藏原羚的分布和栖息地特征

编号 zgly0000370601

文献类型 期刊论文

文献题名 四川石渠县夏季藏原羚的分布和栖息地特征

作者 鲁庆彬  王小明  胡锦矗  王正寰 

作者单位 华东师范大学生命科学学院  华东师范大学生命科学学院  西华师范大学生命科学学院 

母体文献 兽类学报 

年卷期 2005,25(1)

页码 91-96

年份 2005 

分类号 Q959.842 

关键词 夏季  石渠县  分布  栖息地  藏原羚 

文摘内容 The distribution, size and habitat of Tibetan gazelle ( Procapra picticaudata ) population have been investigated in Shiqu County of Sichuan Province from June to August of 1999 and July to August of 2003. 195 sampling belts (3 km×3 km)were made in total, which covered 10.8% of the whole grassland. The results showed that average density of Tibetan gazelles was 0.117 individuals/km^2 in Shiqu County, and their population size was about 1 901 individuals. They mainly occurred from 4 200 to 4 700 m altitude (88.3%). Aggregation characterized distribution pattern of Tibetan gazelles that can be divided into three types: male-only groups (42.1%), female-only groups (21.1%) and mother-offspring groups (36.8%), with main group size varied from 2 to 8 individuals (83%) and mean group size 4.8 individuals. 42 sampling plots (20 m x 20 m) were set at least every 100 m apart. Factor analysis indicated that more away from residence (69%) and closer to water source (93%) were characteristic of Tibetan gazelle habitat. It was usually located in sunny (79%), drafty (83%) and smooth grassland slope (95%) with favorable concealing condition (52%), where vegetation was mainly 5-8 cm in height (62%) and 75%-90% in canopy (64%)。