简报

On 8 July 2026, Professors Zhifeng Liu and Sijing Ye of Beijing Normal University, Senior Research Fellow Dr. Liangzhi You of the International Food Policy Research Institute (IFPRI) visited the Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, for an academic exchange and attended the RESIL FARM project discussion meeting. Participants held in-depth discussions on climate-risk assessment, optimization modelling of cropland systems, and the alignment of these topics with the project's research tasks.

Zhifeng Liu delivered a presentation entitled "Urban Flood Risk and Multidimensional Resilience under Climate Change." The study examined future urban expansion, climate-change-driven changes in floodplains, and their interaction. By combining two development and emissions scenarios, five population-distribution datasets, and nine floodplain datasets, the researchers generated 90 ensemble estimates and assessed five dimensions of resilience—social, economic, institutional, infrastructural, and ecological—across 507 cities worldwide with populations exceeding one million. On this basis, the presentation called for sustained emissions mitigation at the global scale, strict controls on urban expansion into potential floodplains, and integrated adaptation measures targeting deficiencies in social, economic, institutional, infrastructural, and ecological resilience.

Sijing Ye delivered a presentation entitled "Research on a Cropland Optimization Simulator." Against the dual pressures of global food security and planetary boundaries, the presentation proposed coordinating the optimization of cropland spatial configuration with the optimization of cropland-use practices. By deepening the cascading causal understanding of "cropland use–cropland resource endowment–cropland functions," the research aims to develop a cropland optimization simulator that links process diagnosis and mechanism analysis with scenario simulation and policy application. The presentation emphasized that drivers and functional responses within cropland systems exhibit threshold effects, spatiotemporal heterogeneity, scale effects, and complex feedbacks; optimization strategies must therefore be tailored to local conditions. Three research cases were highlighted: (1) simulating the regional effects of improving surface cultivation conditions on cropland production capacity; (2) simulating the effects of the quantity and duration of crop-residue incorporation on soil carbon stocks; and (3) spatially optimizing cropland through coordinated nitrogen reduction and crop allocation.

During the discussion, Senior Research Fellow Liangzhi You provided guidance on both studies, with particular attention to sharpening the research questions, linking analyses across scales, scenario assumptions and uncertainty, model interpretability, and the translation of findings into policy. Research Professor Qiangyi Yu and the other participants also discussed how the research outputs could be aligned with project tasks, as well as data sharing and model applications. The meeting further refined the scientific questions and technical pathways, laying a foundation for advancing project collaboration and improving methods for climate-resilience assessment and optimization.