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[Objective] The integrated utilization of saline-alkali land remains a quintessential stratagem to enhance grain yield whilst embracing the principle of Greater Food. The current simplistic reclamation approaches and the intensive water demands, however, call for a thorough investigation of diversified management strategies and interventions that take into account the impact on water resources. [Methods] The study selected the western part of Jilin province as the study area and adopted the FLUS model to forecast the utilization patterns of saline-alkali land resources until 2030 under four scenarios: Natural progression, grain security, integration of grain and forage production, and ecological protection. The InVEST model was then applied to evaluate the variations in water yield across these scenarios. [Results] (1) From 2000 to 2020, 1 540.18 km² of saline-alkali land in the study area was put to use, predominantly restored to grassland or reclaimed as cultivated land, with a substantial risk of secondary salinization in drylands. (2) Under all scenarios, the reclamation of saline-alkali land for agriculture prevailed. In the grain security scenario, the paddy fields and drylands accounted for 67.48% and 4.23%, respectively. When compared with the natural progression scenario, the grassland area was set to expand by 139.18 km² in the integration of grain and forage production scenario, and ecological land would increase substantially under the ecological protection scenario. (3) By 2030, water yield is projected to decrease in all four scenarios relative to the baseline period, with the ecological protection scenario facing the steepest reduction at 3.71×108 m³. Conversely, the integration of grain and forage scenario offered a well-balanced solution, ensuring the output of crops and forage while easing the water pressures initiated by the management of saline-alkali land. [Conclusion] Utilization of saline-alkali land in the Songnen Plain requires a balanced and strategic approach that supports both grain and forage production. Efforts should be made on maintaining the equilibrium between the supply of agricultural and fodder resources whilst ensuring food and ecological security. The overarching goal is to regulate the ecological restoration of our territorial space and utilization of degraded lands following the concept of Greater Food. [ABSTRACT FROM AUTHOR]

[Objective] The comprehensive development of Xiamen rail transit stations and surrounding land-use remains in its early stages. Comprehensive development projects involving urban renewal areas face challenges in breaking free from the constraints of conventional land development mechanisms. It is necessary to optimize the comprehensive development mode of urban rail transit (shorten as CD mode) and the implementation mechanism in urban renewal areas. [Method] The mechanism of land premium capture in the process of CD mode is introduced, the practical basis for coordinated development between comprehensive development and urban renewal is analyzed, and the conventional implementation path of CD mode is outlined. Taking the comprehensive development of Xiamen Rail Transit Line 1 as an example, the practical exploration of building an implementation mechanism for comprehensive development in Xiamen is described, and the implementation challenges of CD mode in urban renewal areas around stations are analyzed. From the perspective of coordinating the advancement of urban renewal and comprehensive development in station areas, optimization recommendations for the implementation mechanism of rail transit comprehensive development are proposed. [Result & Conclusion] When urban renewal areas establish the distribution of interests and the matching of responsibilities in CD mode, the goals of both rail transit construction and urban renewal should be considered. In the context of stock development, optimizing the implementation mechanism of CD mode can be achieved through strengthening top-level system design, exploring collaborative planning paths, innovating land consolidation and interchange methods, and establishing the participation path for rail transit construction entities. [ABSTRACT FROM AUTHOR]