Group 1 - The core viewpoint of the articles highlights the innovative approach of soil layer separation and reuse in Jiangsu province, particularly in Nanjing, to balance urban construction and farmland protection [1][2] - The Nanjing city planning and natural resources bureau issued a notice in 2024 to promote the separation and reuse of soil layers from cultivated land, with Lishui and Pukou districts leading the exploration of this new farmland protection model [1] - In Lishui district, a project covering approximately 4.81 acres was completed, transforming a former abandoned pond and low-yield land into productive farmland, with an expected annual yield increase of about 125 kilograms per acre [1] Group 2 - Pukou district's construction of the Nanjing North Station required the occupation of some farmland, leading to the identification of low-yield and reed land for soil layer separation and transfer, resulting in the creation of 100 acres of arable land [2] - The city has successfully increased farmland by 16,700 acres through various innovative methods while maintaining the farmland red line [2] - The "One Field, One Code" pilot project in Qichao Street aims to assign unique digital identities to each piece of farmland, enhancing monitoring and management to prevent non-agricultural and non-grain usage [2] Group 3 - In the previous year, the recovery of 23 acres of abandoned land in Shuanglian Village resulted in an increase of 6,300 kilograms of wheat production [3] - The market-oriented leasing of 400 acres of crab pond farmland has expanded grain planting areas and contributed to farmers' income [3]