| Status of urban vegetation in Guangzhou City |
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| 引用本文： | GUANDong-sheng CHENYu-juan. Status of urban vegetation in Guangzhou City[J]. 林业研究, 2003, 14(3): 249-252. DOI: 10.1007/BF02856840 |
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| 作者姓名： | GUANDong-sheng CHENYu-juan |
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| 作者单位： | DepartmentofEnvironmentalScience,ZhongshanUniversity,Guangzhou510275,P.R.China |
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| 基金项目： | the Natural Science Founda-tion of Guangdong Province (021740) and Guangdong Environmental Pro-tection Foundation (2001-18) |
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| 摘 要： | 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.
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| 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 |
| 收稿时间： | 2002-12-25 |
Status of urban vegetation in Guangzhou City |
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| Guan Dong-sheng,Chen Yu-juan. Status of urban vegetation in Guangzhou City[J]. Journal of Forestry Research, 2003, 14(3): 249-252. DOI: 10.1007/BF02856840 |
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| Authors: | Guan Dong-sheng Chen Yu-juan |
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| Affiliation: | (1) Department of Environmental Science, Zhongshan University, 510275 Guangzhou, P. R. China |
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| Abstract: | 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 di-versity, roadside trees and ecological function of urban vegetation in Guangzhou City. The results showed that: (1) soil densi-ties 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) Com-paring 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 vegetation in order to improve urban eco-environment. |
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| Keywords: | Urban vegetation Status Human impact |
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