四川喇叭河自然保护区的两栖爬行动物垂直分布及保护区型式

HERPETOFAUNAL DISTRIBUTION PATTERNS AND RESERVE'S MODEL OF THE LABAHE NATURE RESERVE IN SICHUAN, CHINA

四川省喇叭河自然保护区已知分布有39种两栖爬行动物,本文对在该地区海拔700-2600 m的地段划分为19个小带,并对其物种多样性的分布特点和分布规律进行了研究.结果表明:两栖爬行动物在保护区内具有明显的垂直分布现象,海拔900-1099 m过渡带和2100～2299 m过渡带是该地物种保护的关键地区,该区域具有物种丰富、区系复杂和生态脆弱等特点;因此,在规划建设和旅游开发过程中应避免对该区域的影响,同时保护区的规划应遵循物种多样性的分布规律,合理设计保护区的空间格局,初步提出了多核心、多层次的保护区新型式.

There are known 39 species of reptiles and amphibrans in the Labahe Nature Reserve in western Sichuan, China. 19 transects were selected and setup in an area between 700 m ~2 600 m in the reserve to study the vertical distribution patterns and characteristics of herpetological fauna. The results showed that vertical distribution was an important and obvious feature of herpetological fauna in the region. Coefficient of Similarity ( C. S. ) between each two adjacent transects and cluster analyses indicated that these nineteen transects were divided into three zones, that is, 700 -999 m, 1 000 ~2 199 m and 2 200 ~ 2 599 m. Two transitional zones, 900 ~ 1 099 m and 2 100 ~ 2 299 m, were found with 26 species (66. 7% of total species) , six different components of fauna (85. 7% of total components) , and the weakest ecotone concentrated in less than 20% of total vertical areas. Thus the transitional zone must be regarded as the key areas for biodiversity conservation in the reserve , construction and tourism development would greatly avoid to affect these areas. Furthermore, the reserved model must be adhered to the distributional patterns of biodiversity, and it is important and necessary to design a reasonable and effective model. A new conservation model with more cores and more layers was given. Fig 5, Tab 2, Ref 16