Research on regional suitability assessment and promotion mechanisms of conservation

Black soil represents a high-quality and scarce arable land resource, serving as a critical foundation for ensuring food security in China. However, prolonged development and utilization have resulted in varying degrees of degradation of black soil in Northeast China, directly affecting national food security and ecological stability. Since 2015, China has initiated and progressively intensified efforts in black soil protection. Technical models such as the “Lishu Model” and the “Longjiang Model” have been developed, demonstrated, and promoted, leading to increasingly significant conservation outcomes. Nevertheless, current technical models for black soil protection face dual challenges: unclear suitability boundaries and difficulties in large-scale implementation. To address these issues, this study constructs a comprehensive evaluation framework for model suitability based on four-dimensional collaboration among technology, society, economy, and ecology. Additionally, it proposes a demonstration and promotion mechanism involving collaborative participation from government, research institutions, business entities, and market stakeholders. The study further analyzes future development directions and prospects, aiming to provide innovative strategies for national food security, ecological environment protection, and rural revitalization during the “15th Five-Year Plan” period. These findings also offer practical insights into the green transformation of agriculture and the coordinated development of urban and rural areas.