“耕地中的大熊猫”家底摸清！我国83个黑土地重点保护县地表基质调查完成

Group 1 - The core viewpoint of the article highlights the completion of a three-year survey on black soil resources in Northeast China, covering 83 key protection counties and establishing a quantifiable boundary for black soil [1][3] - The survey area spans 411,700 square kilometers, accounting for approximately 38% of the total black soil area in China, with specific criteria for defining black soil based on soil thickness and organic matter content [3] - The survey results categorize black soil into stable, relatively stable, vulnerable, and degraded zones, with stable and relatively stable areas making up 86.34% and medium to high-quality black soil areas comprising 88.66% [5] Group 2 - The investigation reveals that issues such as soil erosion, desertification, and salinization are closely related to the types of surface matrix structures, providing new perspectives for targeted management [7] - The findings will support the classification, registration, and high-standard farmland construction of black soil, with applications already in progress in various projects across Heilongjiang, Jilin, and Liaoning provinces [7][8] - Future efforts will focus on integrating survey results with land spatial planning, agricultural industry layout, ecological restoration, and carbon sink assessment, shifting the approach from "surface management" to "matrix management" [8]