潭獐峡国家级风景名胜区种子植物区系特征研究

在对潭獐峡国家级风景名胜区种子植物详细调查、标本采集及鉴定的基础上,对其科、属的分布区类型进行统计分析,其种子植物区系特征为:1区系成分丰富,有137科,538属,996种;包括10种科的分布区类型和15种属的分布区类型.2单种科属和寡种属优势明显.3具古老性和残遗性.4科分布区类型以热带分布为主,属分布区类型以温带分布为主;同时,有许多分布区亚型及间断分布类型,呈现出明显的过渡性质.5特有属比较丰富,具有较高保护价值.

Floristic of Seed Plants in Tanzhangxia National Scenic Area and Historic Interest Area

The seed plants have been collected and classified in Tanzhangxia scenic and historic interest area of Chongqing .The flora distribution types at the level of family and genera have been studied .The results show that the flora are considerably rich ,including 996 species ,w hich belonged to 137 families and 538 fenera .T here are 10 distribution types of family and 15distribution types of genera .T he dominant family and genera are prominent .T he origin of its flora is very ancient .T he characteristics of distribution types of family took on obvious tropical nature ,however ,the genera owned temperate nature .Many sbutypes and interrupt distribution types showed obvious transitional character .The endemic genera and species are abundant ,so it ow ned highly value and should be paid more attention to protect them .