滨海湿地盐地碱蓬固碳能力研究——以威海五垒岛湾为例

Study on the carbon sequestration capacity of Suaeda salsa——Taking Weihai Wuleidao Bay as an example

湿地植物具有较强的固碳功能,在全球碳循环过程中扮演重要角色。在测算盐地碱蓬(Suaeda salsa)生物量、净初级生产力基础上,利用实地测量数据,结合地理信息系统(GIS)技术研究其固碳能力及其空间分布,估算了五垒岛湾滨海盐地碱蓬的总固碳能力、总固碳量。结果表明:五垒岛湾滨海湿地潮间带盐地碱蓬的固碳能力为1123.95 g/m^(2),是中国陆地植被平均固碳能力494 g/m^(2)的227.5%,全球植被平均固碳能力405 g/m^(2)的277.5%。潮上带则为460.5 g/m^(2),年均总固碳量为4289.9 kg/a。总的来说,五垒岛湾滨海湿地盐地碱蓬固碳能力属于中上水平,但因分布面积不大,总的碳储量较小。

Wetland plants have a strong carbon sequestration capacity and are play important roles in the global carbon cycle.Based on the determination of the biomass and net primary productivity of Suaeda salsa,the total carbon sequestration capacity and the total carbon sequestration volume of Suaeda salsa in Wuleidao Bay were estimated using field measurement data,combined with GIS technology to study its carbon sequestration capacity and its spatial distribution.The results show that the carbon sequestration capacity of the intertidal Suaeda salsa in the coastal wetlands of Wuleidao Bay is 1123.95 g·m^(-2),which is 227.5%of the average carbon sequestration capacity of terrestrial vegetation in China(494 g·m^(-2))and 277.5%of the global average of vegetation(405 g·m^(-2)).The supratidal zone is 460.5 g·m^(-2),with an average annual total carbon sequestration capacity of 4289.9 kg/a.In general,the carbon sequestration capacity of the Suaeda salsa in the coastal wetlands of Wuleidao Bay is in the middle to upper range,but the total carbon stock is small due to the small distribution area.