Roles of urban vegetation on balance of carbon and oxygen in Guangzhou,China

编号 zgly0000302660

文献类型 期刊论文

文献题名 Roles of urban vegetation on balance of carbon and oxygen in Guangzhou,China

学科分类 220.1060;森林生态学

作者 GUANDong-sheng  CHENYu-juan 

作者单位 DepartmentofEnvironmentalScience 

母体文献 Journal of Environmental Sciences;环境科学学报: 英文版 

年卷期 2003,15(2)

页码 155-159

年份 2003 

分类号 Q948.52  S718.554 

关键词 中国  广州市  城市植被  碳氧平衡  初级生产力 

文摘内容 The plant biomass and net primary production(NPP) of urban vegetation in Guangzhou were estimated by dimension analysis,tree truck volume,and havest methods as well as relationship between biomass and NPP and so on .The biomass and NPP were respectively 2875150t and 1058122 t/a.They were respectively 392495t and 64948t/a in the built-up area and 2482655t and 993147t/a in the unbuilt-up area.It would make plant biomass,especially NPP decline obviously,if the unbuilt-up area were changed to the built-up area.The carbon content of plant was 1328649 for the total and 13.78t/hm^2 for the mean,and amounts of carbon fixed and oxygen made by urban vegetation were respectively 4.80 t/(hm^2·a) and 12.79t/(hm^2·a) for the mean and 462624t/a and 1232430t/a for the total,which were equal to 1.45 times and 1.04 times of those by human breathing.However,they were only equal to 7.61% and 4.97% of amount of carbon released and oxygen consumption in urban Guangzhou.The biomass and NPP of urban vegetation in Guangzhou only corresponded to 7.8% and 47.3% of those of southern subtropical evergreen broad -leaf forest in Dinghu Mountain.Therefore,the roles of Guangzhou urban vegetation in balance of carbon and oxygen would be increased greatly if it could be conserved and improved in some way。