• 论文 •

### 四川短尾鼩的生境选择及对人为干扰的响应

1. 四川师范大学生命科学学院
• 出版日期:2017-08-14 发布日期:2017-07-05

### Habitat selection and the response to human disturbances by Anourosorex squamipes

ZONG Hao，XIANG Dabing, WU Sisi, LI Jiang，REN Xi，LI Wanyu，FU Changkun，WANG Qiong，CHEN Shunde

1. College of Life Science，Sichuan Normal university
• Online:2017-08-14 Published:2017-07-05

Abstract: The population sizes of Anourosorex squamipes in twelve different types of habitats was surveyed during April to September in 2014. According to the order of trapping success and the degree of human disturbance of the different habitats, we analyzed trends of habitat selection of Anourosorex squamipes. Simulated population disturbance was executed by the way of artificial capture. The investigation consisted of population size, age group and sex ratio for different habitats specified as one of four typical sorts (grassland, abandoned pear garden, bush-land and landscape planted woods) after 1, 2, 3 and 4 months of human disturbance, It is shown that the trapping success for Anourosorex squamipes in the 12 habitats presents a sequence from large to small for five grades as follows: forest area ＞ human habitat environment or abandoned pear garden ＞landscape planted woods or bush-land or abandoned vineyard or grassland ＞  Eucalyptus woods or vegetable field ＞ bamboo woods or vineyard or rape field. It was found that Anourosorex squamipes select their habitat more likely in a sequence as follows: habitats with intermediate disturbance and environmental heterogeneity, habitats with high disturbance and low environmental heterogeneity, habitats with low disturbance and high environmental heterogeneity, and habitats with excessive disturbance or environmental heterogeneity or both. Moreover, the population of Anourosorex squamipes in all the habitats was reduced significantly at the beginning of human disturbance, and then could be restored to the normal level in 2 months. More specifically, the average sex ratio was increased by 3.52% , the pregnancy ratio changed slightly, the rate of adult groups was decreased by 1.71%, the rate of old groups decreased by 7.53%, the rate of young group increased by 2.33% and the sub-adult group increased by 6.91% after the human disturbance. Nevertheless, the increasing of rate of young group and sub-adult group suggests that Anourosorex squamipes populations would maintain a continuous growth trend in a long period.