城市园林绿地不同群落类型碳储量研究——以郑州市公园绿地为例

Carbon Storage of Different Community Types in Urban Garden Ecosystem:Taking Park Green Space of Zhengzhou as Example

以郑州市公园绿地中的80个样地为研究对象,比较分析了城市园林绿地中不同群落类型、群落层次等的碳密度和碳储量,同时对郑州市公园绿地植被碳储量进行了总体估算,定量评价了郑州市公园绿地在抵消二氧化碳排放,减缓温室效应方面所起的作用.研究结果表明,郑州市公园绿地不同群落类型及群落层次碳密度存在较大差异,常绿针叶林平均碳密度最大,为85.28 t·hm-2,而落叶阔叶林最小,为50.69 t·hm-2.经估算,2018年郑州市公园绿地总碳储量为294 684 t,可见郑州市公园绿地在增汇减排方面具有巨大潜力,生态效益显著.

In the paper,taking 80 quadrats located in the parks of Zhengzhou as the research object,the carbon density of different community types,different community levels were analyzed. Meanwhile,the vegetation carbon storage of park ecosystem in Zhengzhou was estimated. The role was quantitatively evaluated in offsetting carbon dioxide emissions and mitigating the greenhouse effect. The results showed that the carbon density of different community types were obviously different in urban garden ecosystem. Taking parks ecosystem of Zhengzhou as an example,the evergreen coniferous forest had the highest average carbon density of 85.28 t·hm-2 and the deciduous broad-leaved forest had the smallest average carbon density of 50.69 t·hm-2. In 2018,the vegetation carbon storage of park green space in Zhengzhou was 294 684 t. It demonstrates that park green space in Zhengzhou had great potential in adding carbon sinks and reducing carbon emissions,and ecological benefits were remarkable.