安徽淮北采煤沉陷区水体碳密度分布特征及固碳潜力研究OA

Coal mining activities have induced surface subsidence and a reduction in vegetation coverage,and led to water accumulation in subsidence areas of high groundwater level mining areas.The carbon storage function of the original ecosystem has been significantly destroyed.In order to clarify the carbon sequestration capacity of water bodies in subsidence areas of high groundwater level mining areas,taking the treated coal mining subsidence area of Lvjin Lake in Huaibei city,the untreated coal mining subsidence area in Wugou area,and natural water body in Baiyougou as the research objects,the carbon density con-tent of the water body itself,sediment and aquatic vegetation in each region have been measured,and the distribution differences of carbon density content have been analyzed,and the carbon sequestration capacity has been studied.It is showed that the carbon density distribution of each part is sediment>aquatic vege-tation>water body.Sediment is main carbon sequestration site in water,and the carbon density content accounts for over 97%.The distribution of carbon density in each region is as follows:coal mining subsid-ence areas that have been treated>coal mining subsidence areas that have not been treated>natural water bodies.Water bodies in treated coal mining subsidence areas have strong carbon sequestration capacity,while natural water bodies are relatively weak.Ecological treatment can promote the recovery of carbon pools in coal mining subsidence areas to a certain extent.The research results can provide theoretical sup-port and scientific basis for calculating the carbon sequestration capacity of mining areas in Huai'nan area and Huaibei area,and even other mining areas.