推进长江生态保护工作 留住江豚的“微笑”

Core Viewpoint - The release of two Yangtze River dolphins, known as the "smiling angel," back into their natural habitat reflects the ongoing efforts to protect and restore the species, which is crucial for the health of the Yangtze River ecosystem [1][20]. Group 1: Wild Release Actions - The second wild release of Yangtze River dolphins took place on November 14, with two dolphins returning to the Yangtze River after over two years of training [1][5]. - The first wild release occurred on April 25, 2023, and the current release builds on the initial success, incorporating improved training methods [5][7]. - The training involved adapting the dolphins to the natural environment, including noise and water flow, to enhance their survival skills [3][11]. Group 2: Monitoring and Technology - A wearable tracking system was developed to monitor the dolphins post-release, allowing for precise tracking of their movements [3][13]. - The monitoring process has improved significantly, with a tracking accuracy of 10 meters compared to the previous 5 kilometers [13][20]. - The use of drones and AI technology has been integrated into the monitoring efforts to enhance observation capabilities [18][20]. Group 3: Conservation Efforts - The Yangtze River dolphin is a key species for ecological health, and its protection is vital to prevent a repeat of the functional extinction of the baiji dolphin [15][25]. - China has established five migration protection bases for the dolphins, housing over 150 individuals, with more than 10 births annually [17][20]. - The ongoing efforts include strict enforcement of fishing bans and ecological protection measures, which have led to improved environmental conditions in the Yangtze River [20][22]. Group 4: Future Plans - The long-term plan includes developing a stable wild release technology system by 2030 and expanding the migration protection population by 2035 [11][24]. - Research is ongoing to explore faster and non-invasive methods for assessing the dolphins' adaptation to the wild [7][24]. - The establishment of a sperm bank for the dolphins marks a significant advancement in artificial breeding techniques, aiming for further breakthroughs in species protection [24][25].