陆河县建成区园林植物区系研究

Floristic Study on Garden Plants in Built-up Area of Luhe County

通过实地调查,对陆河县建成区域进行园林植物区系研究。结果表明,陆河县建成区植物区系内共有园林植物67科149属215种,主要以泛热带分布区类型为主,其中世界广布类型有18科3属,分别占科属总数的26.87%和2.01%;热带分布区类型有40科123属,分别占科属总数的59.70%和82.55%;温带分布区类型有9科23属,分别占科属总数的13.43%和15.44%。与临近地区相比较,植物区系科的分布类型均以热带分布为主,植物资源丰富度和多样性均较低。建议陆河县在城市园林绿化中,增加城市垂直绿化面积,丰富植物景观层次,提高城市绿化率。此外,在城市绿化中可增加中国特有科属成分,提升城市园林植物多样性,形成区域特色。

Through field investigation,the garden plant flora of the built-up area of Luhe County was studied.The results showed that there were 215 species of garden plants belonging to 149 genera and 67 families in the built-up area in Luhe County.The flora composition of the built-up area was mainly pan-tropical areas,among which there were 18 families and three genera in the world distribution types areas,accounting for 26.87%and 2.01%of total families and genera,respectively.There were 40 families and 123 genera in the tropical distribution area,accounting for 59.70%and 82.55%of the families and genera,respectively.There were nine families and 23 genera in the temperate zone,accounting for 13.43%and 15.44%of the families,respectively.Compared with the neighboring areas,the distribution types of flora and family are mainly tropical,and the richness and diversity of plant resources are low.We suggest that Luhe County should increase the vertical greening area,enrich the levels of plant landscape,and improve the urban greening rate.In addition,in the future,urban greening can in-crease the composition of unique Chinese families and genera,enhance the diversity of urban garden plants,and form regional characteristics.