红层区耕地土壤有机碳储量估算与固碳潜力分析OA北大核心CSTPCD

The storage of soil organic carbon is a crucial metric for assessing soil nutrients and environ-mental quality,and it is of great importance for land development,utilization,and achieving carbon neutrality.However,little research has been done on soil organic carbon storage in cultivated land in the red beds region.This study focused on the 0-20 cm surface soil of cultivated land in the red beds re-gion of Lianzhou city,utilizing the ordinary Kriging interpolation method to estimate the density and storage of soil organic carbon.The study analyzed the distribution characteristics and soil carbon se-questration potential as well.The results indicate that overall organic carbon density showed a down-ward trend from 2007 to 2019.The average organic carbon density decreased from 4.624 kg/m2 to 2.668 kg/m2,and the organic carbon storage decreased from 1.99×109 kg to 1.21×109 kg.The soil car-bon sequestration potential was calculated to be 9.42×108 kg.The significant decrease in soil organic carbon storage in the red beds region of Lianzhou city is primarily due to weak irrigation facilities,high intensity of farmland utilization,insufficient fertilizer input,and lack of precise fertilization in ag-ricultural conditions.By improving basic agricultural facilities,reducing abandoned farmland,decreas-ing high-intensity soil utilization,and scientifically and reasonably applying fertilizers,the organic car-bon storage of farmland in the red beds region of Lianzhou city can be increased,promoting the sus-tainable development of green,low-carbon agriculture in Lianzhou city.