经专家实地测算，示范区域草地植被覆盖度较治理前提高20%以上，多年生高寒人工草地上生物量增加 25%以上。同时，通过综合施策与管理，草地优良牧草地上生物量提升30%以上，按当地畜牧业生产核 算标准，直接带动与草地生产力对应的经济效益提高20%以上，真正实现"生态保护见成效、牧民增收 有保障"的协同共赢目标，为海北州打造"生态友好型畜牧业"发展模式提供有力支撑，也为全州乃至青 藏高原高寒地区草地生态恢复与可持续发展提供可复制、可推广的实践经验。 自2024年5月起，海北州在青海省畜牧兽医科学院的支持下，依托中央财政林草科技推广示范项目—— 《高寒人工草地暂稳态维持技术集成与示范》，系统开展高寒退化草地综合治理工作。选取80公顷退化 严重区域，采用"优良牧草补播+科学配方施肥"技术模式，补播垂穗披碱草、早熟禾等适应当地气候的 优良牧草，同步施用有机肥改善土壤肥力，加速草地植被重建，提升草地自我修复能力与生产潜力。划 定33公顷生态敏感区域实施围栏禁牧（缓牧）管理，严格控制放牧强度与频次，减少人为干扰，让草地 进入自然恢复周期，促进土壤有机质积累、植被群落优化，推动草地生态功能稳步修复。同时，针对高 寒草地鼠害频发 ...

Core Viewpoint - The 20th Central Committee of the Communist Party emphasizes the importance of strengthening ecological security barriers, particularly in the Sanjiangyuan region, which is crucial for global highland ecological governance [1][3]. Group 1: Ecological Protection Measures - The Sanjiangyuan region, known as the "Water Tower of China," relies on glaciers as a significant water source, with the Animaqing Mountain providing approximately 35% of the water supply for the upper reaches of the Yellow River [2][3]. - Various measures are being implemented to protect glaciers, including three-dimensional glacier monitoring and artificial snow enhancement, which have effectively slowed down glacier melting [4][5]. - The local monitoring team, formed by herders, has been measuring glacier snow lines since 2008, utilizing advanced techniques such as satellite remote sensing and drone photography for comprehensive monitoring [4][5]. Group 2: Restoration of Degraded Land - The restoration of black soil wastelands is critical for water conservation and grassland ecology, with over 516.64 million acres of degraded grasslands being rehabilitated in Guoluo Prefecture [6][7]. - The ecological restoration of the Delni Copper Mine has been recognized as a model case, with efforts to restore vegetation and soil to retain water effectively [6][7]. - The project initiated in 2022 for water source conservation and grassland ecological protection is currently in its second phase, with ecological compensation funds playing a significant role [7]. Group 3: Wetland Restoration - Guoluo Prefecture has implemented a coordinated restoration approach for grasslands, watersheds, and wetlands, resulting in an increase in the number of lakes from 4,000 to over 5,800 [8]. - The wetland restoration project aims to recover 1200 hectares of wetlands, which is expected to increase water flow into tributaries of the Yellow River by 15% [8]. - The average annual growth rate of water source conservation in the Sanjiangyuan National Park has exceeded 6% over the past five years, with water quality at the Guoluo exit of the Yellow River maintained at Class I [8].

Core Insights - The area of artificial grassland in the Qinghai-Tibet Plateau has increased by 2.4 times from 1988 to 2021, with significant growth observed in Qinghai Province [1][2] - The study highlights the ecological impact of the rapid development of artificial grasslands as a response to the degradation of natural grasslands due to climate change and human activities [1] Summary by Sections - **Artificial Grassland Expansion**: By 2021, there are 1.57 million hectares of artificial grassland in Qinghai Province and Tibet Autonomous Region, with Qinghai accounting for 70% and Tibet for approximately 30% [2] - **Geographical Distribution**: Artificial grasslands in Qinghai are concentrated around favorable water and heat conditions, particularly around Qinghai Lake, Qilian Mountains, Hainan Prefecture, and Huangnan Prefecture. In contrast, those in Tibet are more dispersed, found in northern and southeastern Tibet, as well as river basins like the Yarlung Tsangpo and Lhasa rivers [2] - **Research Methodology**: The research utilized a random forest binary classification model with a high overall accuracy of 97% for mapping artificial grasslands, based on satellite remote sensing data collected over 34 years [1] - **Future Research Directions**: The study indicates a need for further scientific evaluation of the ecological and environmental effects resulting from the transition of natural grasslands to artificial grasslands, as existing statistical data may not fully align with remote sensing data [2] - **Theoretical Support for Development**: The findings provide essential spatial distribution information of artificial grasslands, supporting ecological protection and high-quality development of grassland livestock farming in the Qinghai-Tibet Plateau [2]