Types Of Carbon Source And Sink In Rural Scenes And The Construction Strategy Of Reducing Carbon Sources And Increasing Carbon Sinks

Climate warming has had a huge impact on the natural environment on which hu-mans depend.The surge in carbon dioxide emissions is the main factor of climate warm-ing,so how to reduce carbon emissions and increase carbon absorption has become an important issue.In order to actively deal with this problem,China proposed the devel-opment goals of"carbon peak"and"carbon neutrality"in 2020.The rural area of China still occupies a large area.On the one hand,due to the relatively backward development of rural areas,there are many problems in terms of carbon emissions,and the potential for source reduction is huge.On the other hand,the countryside has a large area of natural space such as forest land and cultivated wetland,and a large area of land can be unused,which has a strong carbon sink potential.Coupled with the rural revitalization strategy proposed in 2018,research on rural carbon sources and carbon sinks will be-come one of the key points for China to achieve its"Carbon peaking and carbon neu-trality"development goals.Therefore,it is particularly important to discover the exist-ing problems of carbon sources and sinks in rural areas,and to construct a construction strategy that reduces sources and increases sinks.Through the analysis of the literature,it is found that the current research on rural carbon sources and carbon sinks is not systematic in sorting out the types of rural carbon sources and carbon sinks.Therefore,based on rural characteristics,the types of rural carbon sources and carbon sinks are systematically sorted out from three aspects of production,living,and ecological space,and rural carbon sources are divided into three categories:agriculture,forestry and other land use,rural buildings,and rural production facilities.Divide carbon sinks into five categories:wetlands,grasslands,forest lands,cultivated land,and artificial environment construction,and sort out and summarize the influencing factors corresponding to various carbon sources and carbon sinks,and pro-pose construction measures for reducing sources and increasing sinks in rural areas.Secondly,sort out and summarize various carbon emissions,carbon absorption factors and their calculation formulas in terms of living needs,production activities,natural space,etc.,including carbon emission factors for energy consumption of agri-culture,forestry and other land use,rural buildings and rural production facilities,as well as the carbon absorption factors of forest land,grassland,wetland,and cultivated land,form a complete set of rural carbon source and carbon sink calculation system.Finally,an empirical study was carried out with Dingjiatan Village in Mentougou,Beijing.Through field investigations,the existing problems of carbon sources and car-bon sinks in Dingjiatan Village were summarized,and the types of carbon sources and carbon sinks were extracted.Then,the village’s carbon emission and carbon absorption capacity are quantified and evaluated.Suggestive construction strategies for reducing sources and increasing sinks are put forward for the production,living and ecological space of the village,respectively.Afterwards,the carbon emission and carbon absorp-tion capacity of Dingjiatan Village will be quantified and evaluated after the transfor-mation.The results show that the annual carbon emission of Dingjiatan Village de-creased by 2827.47t CO₂e after the renovation,and the annual carbon absorption in-creased by 186.67t CO₂e.