With the deepening advancement of China's "dual carbon" goals, scrap steel resources, as the only raw material in the steel industry that can be scaled up to replace iron ore, have become a key link in building a low-carbon circular industrial system through their efficient utilization. Currently, the utilization of scrap steel resources in China is at an important stage of rapid growth and strategic transformation. Based on the current industrial situation, the production scale and future trends of scrap steel resources are reviewed, the technical characteristics and application advantages of different steelmaking processes are analyzed, and on this basis, the path recommendations and policy outlooks centered on the high-quality, standardized, and large-scale development goals of scrap steel resources during the "15th Five-Year Plan" period are proposed, aiming to provide a reference for industrial transformation and policy formulation.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |