关键词: 生态状况, 生物多样性, 野生动植物, 桃源洞国家级自然保护区

Abstract:

A survey was conducted in the Taoyuandong National Nature Reserve. It was recorded the forest cover rate reached to 90%, including 7 forest vegetation types and 16 forest stands in the ecosystems of Taoyuandong. This nature reserve possessed rich and diverse species resources: 1 825 seed plants, 215 ferns plants, 72 fungi and 212 terrestrial vertebrates. Furthermore, there were 29 national key protection wild plant species, 4 first-grade national protected animal species, 25 secondary national protected animal species and 152 provincial third-degree protected animal species in wildlife. The quality of air and surface water reached to national standard level. There were relative less bacteria and average 18　000 per cm³ of negative ions in the air of the reserve. The environment had high quality with abundant rainfall and humid as well as diverse types of micro-climate. In general, the fine forest environment and rich biodiversity demonstrated that the ecological condition of Taoyuandong National Nature Reserve was good and it should be protected from degradation.

Key words: ecological conditions, biological diversity, wild animals and plants, Taoyuandong National Nature Reserve