Core Insights - The article highlights the significant contributions of Li Runjie in addressing soil salinization and water quality issues in Qinghai, showcasing his dedication to improving agricultural productivity and ensuring safe drinking water for local communities [1][2][6]. Group 1: Soil Salinization and Agricultural Innovation - Li Runjie has been actively involved in combating salinization in the Qaidam Basin, where over one million acres of land have been affected, turning fertile fields into "white deserts" due to improper irrigation practices [2][3]. - He introduced the use of corrugated pipe drainage technology to manage excess groundwater, effectively preventing salt from rising to the surface and harming crops [5][6]. - The innovative "salt washing" method, which involves irrigating fields to flush out salt through drainage systems, has been widely adopted in Qinghai, revitalizing previously barren lands [5][6]. Group 2: Drinking Water Safety Initiatives - Li Runjie has been instrumental in improving drinking water safety for rural communities, where residents previously relied on contaminated rainwater and faced significant health risks from high fluoride and arsenic levels in well water [6][7]. - He developed a cost-effective multi-media filtration system for drinking water, significantly reducing the cost compared to conventional membrane technologies, making it accessible for local populations [8][9]. - The implementation of solar-powered deep wells has transformed water access for dispersed communities, addressing both water scarcity and electricity shortages [8][9]. Group 3: Ecological Research and Water Resource Management - Li Runjie is leading a major scientific initiative to assess and enhance the water conservation capabilities of the Sanjiangyuan region, which is crucial for the ecological health of the area and the water security of downstream populations [11][12]. - His team is constructing an ecological hydrology knowledge base and developing a digital twin platform to monitor and manage water resources effectively, ensuring sustainable practices in the region [12].