Full focus ｜ The number of finless porpoises in the symbiosis of all things once fell into a ＂low valley＂, and at least it was less than 1012.

　　2537, this is the number of giant pandas, and do you know how many finless porpoises there are? 1249, less than half the number of giant pandas. In the past, due to the influence of human activities, the Yangtze River appeared problems such as water pollution, shrinking lakes and decreasing fish resources, which led the finless porpoise to fall into an extremely endangered predicament. In 2013, the finless porpoise was listed in the IUCN Red List of Endangered Species. Fortunately, with the orderly promotion of the great protection of the Yangtze River in recent years, "smiling angels" are appearing around us more and more frequently, which also brings us many surprises.

　　This is a precious picture taken by Mr. Ma, a citizen of Zhenjiang, near the Yangtze River in early May this year: a finless porpoise is chasing and catching swordfish. The finless porpoise and saury, two once endangered animals, are rarely "in the same box" in Jiangsu section of the Yangtze River.

　　Jiang Meng, secretary-general of Nanjing finless porpoise aquatic biological protection association, said: "The Yangtze finless porpoise is an indicative species, and there is also an umbrella species in our biology, which means that its large number proves that this ecosystem is healthier, that there are many other fish, and that this water quality is also very good. Therefore, the finless porpoise is an important symbol to measure whether our Yangtze ecosystem is healthy."

　　[The population has fallen into a "trough" at least when it was less than 1012]

　　The Yangtze finless porpoise lives in the main stream of the middle and lower reaches of the Yangtze River and in Poyang Lake and Dongting Lake. The Yangtze River used to be their paradise. Research data show that in 1991, there were about 2,700 finless porpoises in the Yangtze River. As time goes by, this number is decreasing.

　　Jiang Meng said: "The first one is the excessively busy shipping, which occupies space with the finless porpoise and affects its sonar system;" The second is the water pollution of the Yangtze River. For example, the Yangtze finless porpoise ate some garbage or water pollution, which caused many diseases in its body. The third is the destruction of habitat, which has turned many natural coastlines, especially river beaches, into factory docks; The last one is also relatively direct. The reduction of finless porpoise food is due to our overfishing, especially illegal fishing. "

　　[Protect "overweight" more and more of them to thrive in the Yangtze River]

　　If we don’t do it again, we will lose the "smiling angel" forever. Protection, Governance and Restoration … … We realized the seriousness of the problem and tried our best to start action. A number of laws and policies have been promulgated one after another; The concept of "jointly protecting and not developing" has been deeply rooted in the hearts of the people.

　　Jiang Meng said: "The pregnant period of the female finless porpoise is about 11-12 months, and only one child can be born. After birth, the lactation period will reach half a year, and after half a year, it can go fishing independently. In April and May of this year, after our monitoring, at least two young porpoises were born in the waters near Zhongshan Pier and Qianzhou in front of us, which also proved that this population of Nanjing Yangtze finless porpoises is breeding very healthily. "

　　On February 28th this year, the Ministry of Agriculture and Rural Affairs announced the results of the scientific investigation of the Yangtze finless porpoise in 2022. The finless porpoise population was about 1,249. This is the first time that the population of the Yangtze finless porpoise has stopped falling and rebounded since the monitoring record was recorded.

　　【 Remarkable achievements have been made in protecting biodiversity of Mother River 】

　　The finless porpoise is back, and there are more magical elves along the Yangtze River. Wu Jiamin, a photography enthusiast, often shoots along the river with a camera. He said that the environment is good and more and more precious shots can be taken.

　　Wu Jiamin, a photography enthusiast, said: "You can often see creatures along the river, which is obviously more than before, such as spoonbills, snipes and cotton mites. There used to be few people when shooting birds, but now there are many people. Now it is beautiful, there are many birds and the natural environment is good. Nanjing is like a natural zoo. "

　　Jiangsu section of the Yangtze River has a total length of 432.5 kilometers and a coastline of 1,169 kilometers. This basin is home to 1/6 of the ecology along the Yangtze River in Jiangsu. Up to now, the water quality of the main stream in Jiangsu section of the Yangtze River has remained Grade II for five years in a row, and the proportion of the main branch water entering the river is of high quality and Grade III is 98.3%. More and more rare and endangered species have settled down in Jiangsu: Oriental stork and Chinese merganser, the first-class protected animals in China, have frequently wintered in the beaches along the Yangtze River in Zhenjiang in recent years; At the end of March this year, the black-billed gull first appeared on a large scale in Haimen section of the Yangtze River. On May 7th, a critically endangered species, the yellow-breasted sole, appeared in the ecological wetland of Mazhou Island in Jingjiang, Taizhou.

　　Zou Peng, deputy director of the Nature Department of the Jiangsu Provincial Department of Ecology and Environment, said: "According to the results of the background investigation of biodiversity, the number of recorded species in the province reached 6,903, including 4,124 species along the Yangtze River, accounting for nearly 60% of the total in the province. It should be said that biodiversity protection has achieved remarkable results."　

　　(Reporter of Jiangsu Radio and Television General Station Rong Media News Center/Editor of Yang Wen Wang Cong/Liu Lu)

　　(The copyright of this news belongs to Jiangsu Radio and Television General Station, please indicate the source.)