海南铜铁岭地区植被和种子植物区系研究

海南铜铁岭地区植被类型为热带低地雨林，其垂直分布变化不太明显。该地区共有野生种子植物161科、664属、1243种(含变种)。该区系热带性质强烈，其中泛热带和热带亚洲成分占优势，各占总属数(除去世界属)的28.64％和28.01％；在种级水平上，热带成分占绝大多数；本地区中国特有种279种，占总种数的22．65％，其中海南特有植物121种，占该地区中国特有种的43．37％。讨论了该地区与临近4个不同纬度地区植物区系的关系。

Study on the Plant Vegetation and Floristic in Tongtieling of Hainan

The plant vegetation type in Tongtieling area of Hainan is tropical lowland rain forest.The variation of its vertical distribution is not distinct.The spermatophyte flora consists of 1243 species in 664 genera and 161 families.In the level of genera,it is predominated by tropical elements,pan-tropical one and the tropical Asia one occupied 28.64% and 28.01% of total genera respectively.In the level of species,the tropical elements predominated in all ones.The species endemic to China of seed plant in Tongtieling are abundant,account for 22.65% of total species.There are 121 species endemic to Hainan in this area,account for 43.37% of the total species endemic to China in this area.The floras of Tongtieling and other 4 areas are compared.