On Evolution and Influencing Factors of Land-use Carbon Emissions in Northeast China
Based on data from land use,distribution of soil type and transportation network,this paper,taking Northeast China as the research area,used the land use carbon emission calculation method and the GWR model to analyze the spatio-temporal evolution and influencing factors of land use carbon emissions from 2010 to 2020.The results showed that:(1)The net carbon emissions in Northeast China were 1.07×108 t,1.13×108 t,and 1.37×108 t in 2010,2015,and 2020 respectively,showing a significant increase over time.(2)Land use types greatly affected the carbon emissions per unit area of land.Land areas primarily used for cultivation were significantly higher than non-cultivated land areas of the same size in terms of carbon emissions,Among cultivated land,dryland areas had higher carbon emissions than paddy and irrigated land.(3)The influencing factors of land use carbon emissions in the study area were complex.Among natural factors,the organic carbon content of the bottom soil played a dominant role,followed by the silt content and elevation of the surface soil.Traffic factors reflected human activities and played a positive role in carbon emissions.Changes of land use type directly affected the regional carbon effect,thus,taking relevant initiatives to reduce carbon emissions and increase carbon sink was the top priority for promoting green development in the Northeast region.
NETL
NSTL
万方数据
