Group 1 - The transformation of abandoned quartz sand mines into a "Crystal Theme Park" and the implementation of solar panels in Linyi County demonstrates effective resource utilization and environmental restoration [1][5] - Linyi County has been recognized as one of the first 258 "Natural Resource Conservation and Intensive Utilization Demonstration Counties" by the Ministry of Natural Resources in 2023 [1] - The county has successfully revitalized over 3,000 acres of low-efficiency land, generating an additional output value of 6 billion yuan, achieving "increased investment without increased land" [2] Group 2 - The introduction of the "per-acre output evaluation" mechanism has led to a 30.6% year-on-year increase in per-acre tax revenue for industrial enterprises, promoting the exit of outdated production capacity and the establishment of high-end projects [4] - The county has implemented a comprehensive monitoring system using satellite remote sensing and drone surveillance to manage its 835,500 acres of permanent basic farmland [5] - The transformation of the abandoned quartz mine into a tourist attraction has resulted in an annual visitor count of 300,000 and an increase in collective income of 1.2 million yuan for the village [5]