Core Viewpoint - Zhangjiakou is focusing on ecological restoration and sustainable development, aiming to enhance water conservation, increase green coverage, and promote industrial transformation during the 14th Five-Year Plan period [2][3][5][7]. Water Conservation - Zhangjiakou has implemented a four-pronged approach ("storage, protection, conservation, and increase") to strengthen water source security, particularly in the Yongding River and Chaobai River basins [3]. - The city has constructed 991,500 acres of high-standard farmland and implemented efficient water-saving irrigation on 335,800 acres, leading to a reduction of irrigated land by 521,400 acres [3]. - By 2025, an additional 80,000 acres will be retired from irrigation, and groundwater over-extraction will be reduced by 50 million cubic meters [3]. - Ecological restoration efforts have resulted in a significant increase in the water area of Chahan Noer from 12.2 square kilometers in 2021 to 74.8 square kilometers by 2025 [3]. Green Coverage - Zhangjiakou has initiated four major actions focused on "blue sky, clear water, increased greenery, and clean soil," leading to substantial ecological improvements [5]. - The city has planted 6.035 million acres of trees and restored 2.11 million acres of grassland since 2021, significantly enhancing the ecological landscape [5]. - The PM2.5 average concentration in Zhangjiakou has ranked first in the Beijing-Tianjin-Hebei region for four consecutive years, indicating improved air quality [5]. Industrial Transformation - Zhangxuan Technology is utilizing "hydrogen-based reduction" and "precise melting separation" technologies to enhance resource recycling efficiency in the steel industry [7]. - The ecological foundation of Chahan Noer Wetland is being leveraged to develop eco-tourism, attracting over 500,000 visitors annually and generating tourism revenue exceeding 50 million yuan [7]. - The transformation of abandoned mines into eco-friendly tourist destinations is creating new business opportunities, including camping and ecological education [7].

Group 1 - Xiamen is one of the first pilot cities for beautiful coastal areas in China, with a sea area exceeding 330 square kilometers [1] - Wuyuan Bay, covering an area of 10.76 square kilometers and a sea area of 17.05 square kilometers, is known as Xiamen's "new living room" due to its significant ecological restoration [1][3] - The area has transformed from a degraded tidal flat into a vibrant yacht industry hub, with over 100 yacht companies and an expected tourist count of over 1 million in 2024 [7] Group 2 - The ecological restoration efforts began in 2002, involving the removal of barriers to water exchange and the reclamation of approximately 100 hectares of land [9] - The inner bay's area increased from 1.12 square kilometers to 2.42 square kilometers, with tidal volume rising by about 5 million cubic meters and green coverage increasing from 5.4% to 13.8% [12] - Wuyuan Bay Wetland Park was established, enhancing habitats for wildlife and increasing biodiversity, including the establishment of a nature reserve for the endangered Chinese white dolphin [14][18] Group 3 - The area has seen the construction of 10 sewage treatment facilities to maintain water cleanliness [11] - A scenic 8-kilometer coastal walkway and a 1-kilometer golden coastline have been developed, promoting recreational activities [18] - The addition of 12 pocket parks in Huli District has increased community access to green spaces, enhancing residents' quality of life [20]

Core Viewpoint - The transformation of the former Yue Stone Mine into the Qingshan Xiuhu Resort demonstrates successful ecological restoration and innovative tourism development, achieving significant environmental and economic benefits [1][2][4]. Group 1: Ecological Restoration - The Yue Stone Mine, which was a wastewater pit with a depth of over 40 meters and a water area of approximately 550 acres, underwent a complex remediation process due to its severe pollution [1]. - After 27 months and three rounds of continuous treatment, the water quality improved significantly, achieving an average pH value of 7 and a pollution reduction rate of 97% [2]. Group 2: Tourism Development - The resort now features unique tourism projects such as off-road experiences, outdoor camping, and ecological dining, attracting many outdoor enthusiasts and becoming a new city landmark for Laixi [3][4]. - The resort includes four space capsule accommodations for about 10 people and a dining area that can host around 80 guests, with a total investment of 1.2 billion yuan for the first phase of the project [3]. Group 3: Future Plans - The local government plans to continue ecological restoration of abandoned industrial sites, focusing on sustainable development and integration of ecological protection with industrial growth [4].