Core Insights - Climate change has a positive effect on grassland productivity, but only in areas where actual grazing intensity is below a certain threshold, allowing warming and CO2 fertilization to offset negative impacts of grazing [1] - The sustainable management model in Qumalai County aims to achieve a win-win situation for production, life, and ecology by leveraging the dual carbon goals and energy structure adjustments [1] Group 1: Ecological Management - Qumalai County, located in the core area of the Sanjiangyuan National Park, faces a conflict between environmental protection and development due to its fragile ecological environment [3] - The sustainable management model promotes "nitrogen-driven carbon" strategies, utilizing wind and solar energy to replace cow dung burning, thereby enhancing the quality of life for herders while reducing carbon emissions and air pollution [3] Group 2: Carbon Sequestration and Monitoring - The research emphasizes the importance of both historical factors and current management practices in enhancing the carbon sequestration potential of ecosystems [4] - A multi-dimensional coupling method system has been established, integrating monitoring, deep learning, and ecological modeling to reveal the dual evolution pattern of "overall improvement - local degradation" in the Tibetan Plateau [4] - An optimized state model has been constructed to understand the relationship between energy flow and the diversity of multi-trophic complex systems, laying the foundation for scientific protection and sustainable use of ecosystems [4]