Group 1 - The core viewpoint emphasizes the importance of ecological protection through sand control and afforestation in Qinghai Province, which faces significant challenges due to its vast and scattered desertified land [1] - The region has made notable progress in large-scale engineering sand control, but sustainable development requires enhanced support systems for seedling supply and technological backing [1] - There is a need to establish local breeding bases for drought-resistant and salt-tolerant plants, particularly in key areas like the Qaidam Basin and Gonghe Basin, to improve the resilience of local ecosystems [1] Group 2 - The article highlights the challenges in sourcing sand-fixing materials, primarily relying on straw, which has seen price increases, thus raising the costs of sand control projects [2] - It suggests the establishment of cross-regional seedling supply bases to facilitate the flow of production factors and support the sand control efforts [2] - The need for local specialized teams is emphasized, as the short construction period and challenging terrain hinder progress; training local farmers in simple machinery operation and planting techniques is recommended [2] - The long-term nature of sand control projects is acknowledged, with a call to extend the sand industry chain and enhance community participation for sustainable and high-quality development [2]