《中国东北83个黑土地重点保护县地表基质调查成果》

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《中国东北83个黑土地重点保护县地表基质调查成果》发布 黑土地“可量化边界”首次划定
Ke Ji Ri Bao· 2025-06-26 09:37
Core Insights - The article highlights the significance of black soil in China, referred to as the "panda of arable land," and discusses the results of a comprehensive survey conducted in Northeast China to assess black soil resources [1][2]. Group 1: Survey Overview - The survey, conducted by the China Geological Survey over three years, covered 41.17 million square kilometers across 83 key black soil protection counties, collecting 184,643 samples and analyzing 115 indicators [1]. - The survey established a quantifiable boundary for black soil, identifying a distribution area of 387,500 square kilometers, which accounts for approximately 94% of the surveyed area [1]. Group 2: Key Findings - The survey revealed an overall improvement in the stability of black soil resources in Northeast China, evaluated through six indicators including surface matrix layer configuration and black soil thickness [1]. - Carbon storage estimates from the survey indicated a total carbon storage of 3.401 billion tons and organic carbon storage of 2.117 billion tons in the top two meters of the surface matrix layer, supporting China's "dual carbon" goals [2]. Group 3: Implications for Resource Management - The findings provide critical support for the protection and planning of black soil resources, offering new perspectives on issues such as soil erosion, land desertification, and salinization in black soil regions [2][3].