| 刊名 | Agricultural Biotechnology |
| 作者 | Yongchao SHI1，2, Xuan LIU3, Jierui DAI24*, Chao YU24, Yingpeng WANG24, Hongjin WANG24, Xin WEI1 |
| 作者单位 | 1.The Third Exploration Team of Shandong Coalfield Geology Bureau, Taian 271000, China; 2. Shandong Research Center of Engineering Technology on Land Geochemical Quality and Pollution Control,Jinan 250013, China; 3. Shandong Tudi Development Group, Jinan 250014, China; 4. Shandong Institute of Geological Survey, Jinan 250013, China |
| DOI | DOI:10.19759/j.cnki.2164-4993.2026.03.006 |
| 年份 | 2026 |
| 刊期 | 3 |
| 页码 | 21-24 |
| 关键词 | Soil carbon density; Soil carbon storage; Spatiotemporal change; Carbon sequestration potential; Shandong Province |
| 摘要 | [Objectives] This study was conducted to investigate the spatial distribution and variation patterns of soil carbon storage. [Methods] Using high density, high precision soil carbon data obtained at two depths from the multi purpose regional geochemical survey of Shandong Province (2013), the soil carbon density and storage for the 0-20, 0-100, and 0-160 cm layers in the province were estimated. The spatiotemporal evolution of SOC density and storage and the carbon sequestration potential were further examined. [Results] (1) The SOC densities for the three soil layers (0-20, 0-100, and 0-160 cm) in Shandong Province were 2.22, 7.64, and 10.09 kg/m², respectively, with all layers showing significantly lower SOC densities than the national average. (2) The spatial distribution of topsoil SOC density generally exhibits a pattern of low values in coastal areas, moderate values in the northwestern plain and eastern hilly regions, and relatively high values in the central and southern mountainous areas. (3) Compared with the data from the Second National Soil Survey conducted 18 years ago (1985), the topsoil SOC density increased from 1.43 to 2.22 kg/m², and the storage increased from 226.41 to 350.65 Mt, a net increase of 124.24 Mt. SOC has accumulated in the soil at an average rate of 0.044 kg/m²·a, exhibiting an overall “carbon sink” effect. [Conclusions] This study provides a scientific basis for China’s strategic planning of CO₂ emission reduction and global carbon cycle research. |
