成都龙泉山城市森林公园野生维管植物多样性及区系特征

Diversity and Floristic Characteristics of Wild Vascular Plants in Chengdu Longquan Mountain Urban Forest Park

在多次野外实地调查的基础上,对龙泉山城市森林公园野生维管植物的数量特点、区系成分进行了探究。结果表明:(1)该区共有野生维管植物138科442属628种,国家Ⅱ级保护植物7种,其生活型以草本植物种类最为丰富,共392种,占全部种类的62.42%。(2)在科属组成上,科组成以寡种科和单种科占优势,两者共占总科数的78.26%;属组成以寡种属和单种属占优势,两者共占总属数的98.87%。(3)分布区类型多样,科级水平上有10个类型和5个变型,热带成分占明显优势;属级水平上有14个类型和18个变型,热带成分略多于温带成分,具有明显的亚热带特性。

Based on several field investigations,the quantitative characteristics and floristic composition of wild vascular plants in Chengdu Longquan Mountain Urban Forest Park were analyzed.The results showed that:(1)There were 628 species of wild vascular plants,belonging to 442 genera and 138 families and 7 species of national second-level key protected wild plants in this area.The herbaceous plants were the most abundant with a total of 392 species,accounting for 62.42%of all species.(2)In terms of family and genus composition,few species families and single species families were dominant,accounting for 78.26%of total number of families;In the genus composition,few species and single species were dominant,accounting for 98.87%of total number of genera.(3)The types of distribution were various,including 10 types and 5 variants at the family level,and the tropical component were dominant.There were 14 distribution types and 18 variants at the genus level,and the tropical component were slightly more than the temperate component,which had obvious subtropical characteristics.