桃源洞国家级自然保护区的生态状况

Ecological Status of Taoyuandong National Nature Reserve

对桃源洞国家级自然保护区生态状况进行调查和研究。结果表明:保护区内森林覆盖率90%,有7种森林植被类型,16种林分,生态系统复杂多样;境内共有种子植物1825种、蕨类植物215种、菌类72种、陆生脊椎动物212种,物种资源丰富多样;野生动植物中,有国家重点保护野生植物29种,国家一级保护动物4种,国家二级保护动物25种,省三级保护动物152种;保护区内空气质量、地表水质量为国家一级,空气负离子浓度平均1.8万个.cm-3,空气中细菌少,气候温和湿润,降水充沛,小气候类型多样,环境质量好。优越的森林环境和丰富的生物多样性表明,桃源洞国家级自然保护区的生态状况良好,需倍加呵护。

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 em3 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.