1、生物新方法重建青藏高原东北部快速隆升历史
</p><p>研究团队利用青藏高原东北部柴达木盆地四条年代准确的剖面和钻孔的孢粉数据，结合剖面上发现的植物化石，利用上述建立的海拔公式，矫正后分别获得了柴达木盆地东段和西段两侧山体1600万年来连续的古高度变化记录，揭示柴达木盆地在约1500万年前东、西部的古海拔分别为1332±189米和433±189米，其后东段在约1100万年前迅速抬升至3685±87米，西段在约700万年前迅速增加至3589±62米，已接近现代高度。 </p><p>科研团队介绍，“研究表明青藏高原东北部在新生代晚期，即约1100-700万年前发生了强烈隆升，这个隆升不容小觑，它对区域气候环境和生态演化产生了极其重要影响。
2、继续创新！国科大6月科研成果速览！
该研究结果以Soil moisture but not warming dominates nitrous oxide emissions during freeze-thaw cycles in a Qinghai-Tibetan Plateau alpine meadow with discontinuous permafrost为题在线发表于Frontiers in Ecology and Evolution。
3、环境科学与工程系王梓萌团队在青藏高原冻土中发现大量“冬眠
这项研究成果以“青藏高原冻土储藏大量卤代有机物”（Substantial halogenated organic chemicals stored in permafrost soils on the Tibetan Plateau）为题，于2023年10月23日在《自然·地球科学》（Nature Geoscience）上发表。
4、我国科学家揭示青藏高原差异性隆升过程和机制
中国科学院青藏高原研究所丁林院士领衔的大陆碰撞与高原隆升科研团队近日在国际专业学术期刊《自然综述：地球与环境》以“青藏高原隆升时间和机制”为题，发表综述文章，系统阐述了青藏高原的差异性隆升过程和深部动力学机制。
Ecological relocation in Tibet reflects change of China's
To strike a balance between natural conservation and livelihood development, Padma and his fellow villagers decided to relocate again, to a place that is more livable with better conditions for development.
New light shed on diversity of plateau's plants
Chinese scientists have discovered what determined the distribution of unique high-altitude plants across the Qinghai-Tibet Plateau, thereby answering a major global scientific question.
China mulls strengthening Qinghai
Based on a draft submitted for its first reading in August 2022, the new draft highlights more efforts that would strengthen ecological protection and restoration and improve biodiversity protection on the plateau.
Over 4,600 scientific datasets on Qinghai
Since its establishment in 2019, the TPDC has collected scientific datasets in the cryosphere, solid Earth, ancient environments, land surfaces, and other fields. It now has more than 50,000 registered users, attracting 860,000 visits per month on average.
Ecological Progress on Qinghai
Now a system in this regard is being improved step by step on the Qinghai-Tibet Plateau, with solid achievements in improving ecological conservation and environment quality, it said.
Multiple factors affect oxygen levels on Qinghai
Based on the research, Ma Yonggui, a professor at Qinghai Normal University, and his team have found the linear relationship between the incidence of chronic altitude sickness and hypoxia -- the lower the oxygen content, the higher the incidence of altitude sickness.
In the field of modern materials science, organosilicon resins have garnered significant attention due to their unique physical and chemical properties. Particularly, epoxy-modified organosilicon resins stand out for their exceptional performance in temperature resistance, chemical resistance, and mechanical strength. These qualities have led to their widespread use in critical industries such as aviation, automotive, electronics, and construction. In regions with special geographical and climatic conditions like Tibet, this material is especially vital as it effectively addresses the challenges posed by extreme weather and complex environments.
The environmental conditions in Tibet are extraordinarily harsh, characterized by high altitude, low temperatures, aridity, and intense ultraviolet (UV) radiation. These factors impose stringent demands on the performance of construction materials. Epoxy-modified organosilicon resins excel in such scenarios due to their superior thermal stability, chemical resistance, and mechanical robustness, making them an ideal solution for local infrastructure needs.
Firstly, the thermal stability of epoxy-modified organosilicon resins ensures the preservation of their physical and chemical properties under high-temperature conditions. This is crucial in Tibet, where summer temperatures can exceed 40°C, while winters may drop below -20°C. The ability to maintain performance across such extreme temperature fluctuations guarantees the safety and structural integrity of buildings.
Secondly, the chemical resistance of these resins is remarkable. Tibet’s natural environment exposes materials to corrosive substances like acid rain and sulfides. By incorporating epoxy components, the resins enhance their resistance to acids, bases, and other chemicals, preventing degradation and extending the lifespan of structures.
Additionally, the mechanical strength of epoxy-modified organosilicon resins plays a pivotal role in their application. In Tibet’s high-altitude regions, buildings must withstand substantial gravitational and wind pressures. The high mechanical strength of these resins ensures structural stability and resilience against natural disasters, providing residents with safer living environments.
Beyond these core advantages, epoxy-modified organosilicon resins offer further benefits in Tibet. Their excellent electrical insulation properties make them valuable for power infrastructure, while their wear and scratch resistance suit high-traffic areas like airport runways. Environmentally, these resins are advantageous due to minimal waste generation during production and easy recyclability, aligning with sustainable development goals.
challenges remain. Tibet’s remote location and limited transportation infrastructure drive up logistics costs, hindering broader adoption of these advanced materials. Additionally, the higher price of epoxy-modified organosilicon resins compared to conventional materials increases construction expenses. Future research and development efforts must focus on cost reduction without compromising performance.
epoxy-modified organosilicon resins demonstrate outstanding potential for addressing Tibet’s unique environmental challenges. Through ongoing technological innovations, tailored formulations could further enhance their suitability for the region, contributing to infrastructure development and environmental protection in Tibet.
