（来源：黑龙江日报） 转自：黑龙江日报 本报讯（记者周静）日前，由中国科学院东北地理与农业生态研究所农业技术中心与黑龙江省黑土耕地 保护协同创新推广体系联合举办的黑土地保护利用"百家讲坛"（第二期），以线上和线下结合的方式在 哈尔滨举办。 论坛上，中国科学院东北地理与农业生态研究所韩晓增研究员、黑龙江八一农垦大学的张玉先教授和黑 龙江省农业科学院耕作与栽培研究所的钱春荣研究员，分别从黑土层演化与耕作层培肥、旱田整地技术 和玉米秸秆还田模式等方面作了精彩报告，分享了最新研究进展和研究成果。 省黑土耕地保护协同创新推广体系首席专家邹文秀认为，黑土地保护与利用"百家讲坛"的成功举办，不 仅为黑土地保护利用领域的科学家、青年学者和学生提供了一个学术交流平台，而且有力促进了黑土地 保护利用领域多学科交叉融合创新发展，同时对于推动全社会共同参与黑土地保护行动，守护宝贵的黑 土地资源具有重要作用。 ...

Group 1 - The core viewpoint of the articles emphasizes the importance of high-quality agricultural development, particularly through the comprehensive utilization of saline-alkali land and the protection of black soil in Jilin Province, which is crucial for ensuring national food security [1][2][14] - In 2024, China's total grain production is projected to exceed 1.4 trillion jin, with Jilin Province achieving a grain output of over 85 billion jin for the first time, driven by increased development of saline-alkali land [1] - The Jilin Provincial Discipline Inspection and Supervision Commission has been actively involved in supervising land remediation projects, particularly focusing on the involvement of social capital and addressing corruption issues related to land management [4][6][14] Group 2 - The articles highlight the significant challenges associated with saline-alkali land, which is characterized by high salinity and low organic matter content, making its comprehensive utilization a complex task [7][13] - Various regions, including Shanghai, Shanxi, and Henan, have explored different methods for involving social capital in land remediation, with a focus on risk prevention and control through structured bidding processes [4][11] - The Jilin Provincial government has implemented policies to guide and regulate social capital participation in the development of agricultural resources, ensuring comprehensive management from project initiation to post-implementation [10][11] Group 3 - The articles discuss the ongoing efforts to enhance supervision and accountability in land remediation projects, with a focus on preventing corruption and ensuring the effective use of resources [8][12][14] - The Jilin Provincial Discipline Inspection and Supervision Commission has established a third-party evaluation mechanism to regularly assess project implementation and address any discrepancies or issues that arise [11][13] - The comprehensive utilization of saline-alkali land is recognized as a critical component of agricultural expansion, with over 140 remediation projects implemented in Jilin Province, resulting in the addition of over 800,000 mu of arable land and an expected annual grain increase of nearly 1 billion jin [13][14]

Core Insights - The project represents the first completed surface substrate survey in Northeast China's black soil region, covering 83 key protection counties and establishing a new model for farmland protection based on surface substrate [1][2] Group 1: Project Overview - The survey was led by the China Geological Survey and involved five organizations, taking three years to complete [1] - The investigation covered an area of 411,700 square kilometers, approximately 38% of the total black soil area in China [1] - A total of 711 personnel and 538 pieces of equipment were utilized, with 21,242 boreholes and 8,077 natural profiles and trenches completed [1] Group 2: Findings and Models - The survey quantified black soil resources for the first time, identifying a distribution area of 387,500 square kilometers, which is about 94% of the surveyed area [2] - The project established a stability evaluation model and a comprehensive quality evaluation model based on soil thickness, organic matter content, and nutrient levels [2] - The results indicated that 86.34% of the black soil area is stable or relatively stable, while 13,500 square kilometers face significant degradation risks [2] Group 3: Carbon Storage and Resource Potential - The project identified 13,600 square kilometers of potential backup arable land, primarily in Inner Mongolia, western Jilin, and southwestern Heilongjiang [3] - The total carbon storage in the surface substrate layer to a depth of 2 meters was calculated at 3.401 billion tons, with organic carbon storage at 2.117 billion tons [3] - The project developed a "3-level 5-category" classification system for surface substrates, enhancing the theoretical framework for soil management [3] Group 4: Future Directions - The surface substrate survey will expand its coverage to better understand black soil resources and establish a regular monitoring network [4] - The project aims to integrate with land spatial planning, agricultural layout, ecological restoration, and carbon assessment, promoting a shift from "surface management" to "substrate management" [4]

Group 1 - The Longcheng City Discipline Inspection Commission and Supervisory Committee have established a joint inspection team to monitor high-standard farmland construction in Yushu City, focusing on the sustainable use of black soil resources and food security [1] - A total of 540 projects and 60 subsidy funds related to black soil protection and utilization have been thoroughly investigated, with a focus on farmland protection, construction, and subsidy distribution [1] - The commission has created a special supervision work manual for black soil protection and utilization, conducting 39 inspections in 2024 and identifying 170 issues, with 146 issues rectified immediately [1] Group 2 - The Longcheng City Discipline Inspection Commission emphasizes case handling as a key approach to promote black soil protection, actively seeking problem leads from various sources [2] - A total of 295 problem leads related to black soil protection have been processed, resulting in 242 cases filed and 217 individuals receiving disciplinary actions [2] - The Yushu City Discipline Inspection Commission focuses on black soil protection and high-standard farmland construction, identifying regulatory blind spots and risks, leading to the investigation of illegal land occupation and the restoration of 102.27 acres of farmland [2] Group 3 - The Gongzhuling City Discipline Inspection Commission closely monitors responsibility implementation, project management, fund usage, and engineering quality in high-standard farmland construction [3] - A collaborative supervision mechanism has been established with various departments to enhance the effectiveness of supervision and address issues found during inspections [3] - The commission provides feedback on identified issues to responsible units and reports to city-level leaders, ensuring thorough rectification of problems [3]