Status of urban vegetation in Guangzhou City

编号 zgly0000302954

文献类型 期刊论文

文献题名 Status of urban vegetation in Guangzhou City

学科分类 220.20;森林培育学

作者 GUANDong-sheng  CHENYu-juan 

作者单位 DepartmentofEnvironmentalScience 

母体文献 Journal of Forestry Research;林业研究: 英文版 

年卷期 2003,14(3)

页码 249-252

年份 2003 

分类号 S731.2  Q948.15 

关键词 广州市  城市植被  植被特征  生物多样性  生产力  生态功能  生态环境 

文摘内容 According to a survey for the urban vegetation of Guangzhou, urban vegetation has a significantly difference from natural vegetation because of intense human impacts. The research was conducted in a synthetic survey for soil, species diversity, roadside trees and ecological function of urban vegetation in Guangzhou City. The results showed that: (1) soil densities of urban roadside and park forests were higher than mean density of natural forest soil. The pH values of soil in urban roadside were higher too, and the content of organic matter and the concentration of nitrogen were lower. (2) Species diversity of urban vegetation was lower. The most number of species was only 16 species in tree layers of urban forest. (3) Tree growth was limited by narrow space in high-density urban area, where the trees with defects and disorders were common. (4) Comparing with mature natural forests, the productivity of urban vegetation was lower. The effect of urban vegetation on balance of carbon and oxygen were influenced by the low primary production of urban vegetation. Therefore, the growth condition for urban vegetation should be improved. Biodiversity, primary production and ecological function should be increased for urban vecletation in order to improve urban eco-environment。