Core Viewpoint - The collaboration between Nanjing and Zhangjiajie has led to significant achievements in agricultural product sales and cultural exchange, highlighting the importance of regional cooperation in enhancing local economies and promoting unique products [1][2]. Group 1: Collaboration Achievements - Over 700 mutual visits and exchanges have occurred between the two cities, with more than 100 cooperation agreements signed across various fields [2]. - Nanjing has established multiple sales points for Zhangjiajie agricultural products, resulting in over 8 million yuan in sales this year alone [2]. - The "Ning Zhang Cooperation" initiative has facilitated the signing of procurement framework agreements between seven Nanjing procurement units and the consumption assistance exhibition center [2]. Group 2: Agricultural and Cultural Promotion - Zhangjiajie is known for its unique agricultural products, including Mei tea, which is rich in flavonoids and has been dubbed the "king of flavonoids" [1]. - The cities are exploring a new model of integrated development between agriculture and tourism, focusing on the construction of a "Mei Tea Theme Park" to promote cultural and experiential tourism [3].

Core Viewpoint - The article highlights the successful cultivation of sea buckthorn in the arid and challenging environment of the Erdos region, which has significantly contributed to soil and water conservation while creating economic opportunities through the development of a complete sea buckthorn industry chain [4][12]. Group 1: Environmental Impact - The introduction of sea buckthorn has transformed previously barren areas into green landscapes, effectively reducing soil erosion and sediment flow into the Yellow River [2][4]. - Sea buckthorn's extensive root system allows it to thrive in harsh conditions, forming a protective network that stabilizes soil and mitigates water erosion [7][11]. Group 2: Agricultural Practices - The area has successfully cultivated 1.35 million acres of sea buckthorn, with a survival rate of over 70% even in drought years, demonstrating effective agricultural practices [11][12]. - Specialized tools and scientific planting methods have been developed to enhance planting efficiency and survival rates of sea buckthorn [10][11]. Group 3: Economic Development - The establishment of the sea buckthorn industrial park has led to the creation of various products, including beverages and health supplements, contributing to a complete industry chain [12][13]. - The sea buckthorn industry in the region is projected to generate a total output value of nearly 70 million yuan in 2024, providing significant income opportunities for local farmers [13].