【#纪录片长江的微笑# | 送江豚回家】2023 年 4 月，湖北长江天鹅洲白鳍豚国家级自然保护区，四头迁地保护的长江江豚被放归长江，江豚终于可以回家了！中国农业农村部发布了2022年长江江豚科学考察数据，显示长江江豚种群数量为1249头，与2017年的考察数据1012头相比，5年间量增23.42%，年均增长率为4.3%。In April 2023, conservationists the world over watched as four Yangtze finless porpoises raised in captivity were released into the Yangtze River's Tian'ezhou Nature Reserve. Monitoring later showed they were very likely integrated into the natural population there. The year before, China's Ministry of Agriculture and Rural Affairs released the results of a survey of the species, showing a population of 1,249 compared with 1,012 monitored a half-decade earlier. The increase, amounting to an average annual growth rate of 4.3 percent, was widely welcomed. http://t.cn/A6l1alle