Core Insights - The construction of ultra-high voltage direct current (UHVDC) transmission lines in China is accelerating, with a focus on delivering clean energy from western regions to eastern consumption areas [10][11][14] - The Ningxia-Hunan ±800 kV UHVDC project is the first approved transmission corridor primarily for renewable energy from the "desert, Gobi, and barren" wind and solar power bases, capable of delivering over 36 billion kWh annually to Hunan, with more than 50% from renewable sources [12][13] - By the end of 2023, China's UHVDC transmission capacity is expected to exceed 340 million kW, a 25% increase from the end of the 13th Five-Year Plan [7][11] Group 1: Project Developments - The Gansu-Zhejiang ±800 kV UHVDC project has entered the line construction phase, indicating ongoing infrastructure development [4] - The Baihetan-Jiangsu ±800 kV UHVDC project exemplifies the efficiency of UHVDC technology, reducing transmission time to just 7 milliseconds for electricity from Sichuan to Jiangsu [9] - The Lonyang-Shandong ±800 kV UHVDC project, which is the first integrated energy base project, has been completed and is expected to deliver 36 billion kWh annually, with over half from renewable sources [12][13] Group 2: Technological Advancements - The "14th Five-Year Plan" period has seen significant advancements in UHVDC technology, with the total length of UHVDC lines expected to grow from 28,000 km to over 40,000 km [11][15] - The introduction of standardized ±800 kV/800 MW UHVDC technology has led to the creation of over 500 various standards and specifications, enhancing the domestic power equipment manufacturing capabilities [15][17] - Breakthroughs in "bottleneck" technologies have been achieved, including the use of domestically produced equipment, which reduces reliance on foreign technology [17]

Core Viewpoint - The ecological restoration project in Alxa League, Inner Mongolia, has successfully transformed the "Yellow" landscape into "Green," significantly reducing sand erosion and improving local livelihoods [1][2][3]. Group 1: Ecological Restoration Efforts - The ecological restoration project at the "Yama Nose" area began in 2022 and is set to be completed in 2024, with significant challenges faced during the planting process [1]. - The vegetation coverage in the "Yama Nose" area has increased from less than 5% to over 35%, resulting in a reduction of 90,000 tons of sediment entering the Yellow River annually [1]. - Approximately 1,856 kilometers of desert forest and grassland borders have been established in Alxa League, increasing the forest coverage rate from 2.96% to 8.42% [2]. Group 2: Economic Impact on Local Communities - Local herders have begun participating in afforestation efforts, leading to improved living conditions and reduced sandstorms [2]. - Farmers and herders involved in the forestry industry have exceeded 30,000, with an average annual income increase of 30,000 to 50,000 RMB per household [3]. - The presence of construction teams has revitalized local businesses, including small restaurants and supermarkets, contributing to the economic growth of the region [3]. Group 3: Innovative Approaches in Sand Control - The Tengger "Shagao" New Energy Base utilizes innovative methods for sand control, including biodegradable sandbags made from cassava and corn starch, which help stabilize the area [2]. - The combination of solar panels and vegetation planting creates a dual benefit of energy generation and ecological restoration [2].