Poyang Lake fell below the 8 -meter -long water level, and the lake was difficult to find a dolphin figure

Jimu Journalist Chen Qian Hu Dikai

Video editing Zhou Xin

On September 6, Xingzi Station, the iconic hydrological station of Poyang Lake, fell below the 8 -meter -dead water level, and once again refreshed into the earliest record of the extremely dry water period. On September 7, the staff of the Polorner Protection Association of Poyang County, Jiangxi Province told Jimu Journalists that compared with the same period of previous years, the water level of Poyang Lake this year was more than 9 meters lower. The porpoons often appeared in previous years, and they are now gone.

According to Jimu journalists, since August, due to the continuous high temperature and rain and rain, the water level of Poyang Lake has fallen rapidly. At 8 o'clock on September 6, the water level of Xingzi Station of Poyang Lake was retreated to 7.99 meters. It was the lowest water level in history since 1951. Poyang Lake entered the extremely dry water period. After the following), after the low water period (below 10 meters), Poyang Lake once again refreshed into the earliest record of the extremely dry water period. Compared with the earliest year (November 30, 2019), it was 85 days in advance, and the average time since the record was 115 days in advance. The water level of Xingzi Station retreated from 12 meters of dry water to 8 meters. It only took 31 days, with an average daily regression of 0.13 meters, and the maximum daily decline of 0.33 meters. The year.

"We have always used the water level of Xingzi Station as the reference of our water level." Jiang Liyi, Secretary -General of the Polorner Protection Association of Puyang County, Jiangxi Province, told Jimu Journalists. On September 6, the water level of Xingzi Station of Poyang Lake in Jiangxi dropped to less than 8 meters and entered the extremely dry water period. The patrol team guarded here has adopted the number of patrols to increase the number of patrols, and strives to discover early in porpoons, deal with early disposal, and early ambulance.

Poyang County is located in the core area of ​​the Poyang Lake Nature Reserve in Jiangxi Province. The length of the shoreline of Poyang Lake is 257 kilometers, plus the surrounding river, and the water area exceeds 1,000 kilometers. Nearly 100 porpoons account for nearly one -fifth of the total number of porpoons in Poyang Lake. Some time ago, there were death porpoons found in the Poyang Lake Basin, which made Jiang Liyi feel a little comfortable that in Poyang County, there was no report of death porpoons, but what made him worried is that the porpoons often appeared at this time in previous years. Don’t see the trace.

Pymalisage of Puyang Porpoch Protection Association Parade Poyang Lake surface

"Now the water level of Poyang Lake is more than 9 meters lower than in the same period of the same period in previous years. The area of ​​the lake area is about 300 square kilometers now. At this time in previous years, at least 2,000 square kilometers." Jiang Liyi said that the water area of ​​the lake area area said that the water area of ​​the lake area area The sharp shrinking so that the porpoons are no longer active. Last week, under the organization of the relevant departments of Jiangxi Province, the towns and counties along the lake organized a patrol team to conduct scientific examination monitoring. I didn't see a porpoise.

In the second half of 2019, when Poyang Lake entered the dry period, the fishing administration department of the Agricultural and Rural Bureau of Poyang County and the patrol players purchased nearly 4,000 kilograms of live -bodies, which were put into the area of ​​porpoons to alleviate the difficulty of foraging in porpoons. Essence At the end of August, Jiang Liyi also organized a launch and put a 1200 catties of small fish in Poyang Lake, so as not to let the porpoch be hungry. But for many days in a row, the porpoons could not be seen, and the patrol players were very anxious. Although he did not see porpoons, Jiang Liyi and the patrol players did not give up. "We just checked the medicine boxes carried with the boat a few days ago, and replaced all the medicines that were about to expire. Related items were prepared to be prepared. Use the field. "Jiang Liyi said that the experts of the Yangtze River aquatic biological research, as well as protection institutions such as the Yangtze River Ecological Protection Foundation of Hubei Province, and other protection institutions. , End the most difficult time. "

Lushan City, Jiangxi Province, which belongs to the Poyang Lake Basin as Poyang, is also a key area for porpoons. Jimu reporters learned that in the patrol area of ​​the Federation of Federation and Federation of Lushan City, due to the faster water level, porpoons' activity space was restricted, and there were no signs of porpoise activities in about a month. In the same period of previous years, the porpoons that the patrol players can see every day are around 10 to 20. At the end of July, Lushan City implemented an ecological value -added and release in the Poyang Lake Basin, and launched 40 million tails of various types of freshwater fish. Faced with the decline in the water level of Poyang Lake, Lushan City carried out inspections of water -related units to protect the safety of the waterway and the safety of the aquatic vitamin. The patrol team also used the time when the water level decreased to clean up the fishing nets that were inconvenient to clean up during the rich water period, and provided a better space for the rising water level after the porpoise. Where did the porpoises go? Why can't I see many places now? Qian Zhiqi, deputy secretary -general of the Yangtze River Ecological Protection Foundation, has been engaged in the research and protection of porpoons for many years. He introduced that since the beginning of August, the Foundation has maintained contact with many patrol teams in Poyang Lake. Reduce. At present, it is difficult to see porpoons in the waters of Poyang, Yu Qian, Jinxian, New Construction, and Nanchang in Poyang Lake. The areas where the porpoise is mainly distributed in the nursing waters where Duchang and Yongxiu patrol teams are located. The waters of Hukou, Xixi, and Xingzi are also scattered. After understanding this situation, the Foundation also moved quickly, paying close attention to the weather dynamics, and when the drought could be relieved, and continued to consult relevant experts at the same time to analyze the key distribution area that porch porpoons might be in danger. They also contacted the patrol teams from various places to consult the water level. They suggested to strengthen the patrol and informed the key waters analyzed by experts. At present, the agricultural and rural departments, the Chinese Academy of Sciences Institute, and the Jiangxi Forestry Department of Poyang Lake have been acting. The Three Gorges Project also strives to alleviate the impact of drought through downstream.

Where does the porpoch go under the drought, will they be dangerous?

Qian Zhengyi said that although porpoons are constant temperature animals, the scope of adaptation to water temperature is wide, and 4-30 degrees Celsius can live normally. Whether it is the dry flow of the Yangtze River or Poyang Lake, there are still many deep-water areas in the current drought. In the summer of the Yangtze River water temperature in 20-30 degrees Celsius, the water temperature in winter continues about 10 degrees Celsius. Find a cool place. With the process of retreating, porpoons will also move to the deep water area to temporarily avoid danger. However, if the drought continues, the areas where the porchy is temporarily avoided is divided into several small waters because of the terrain, especially the Poyang Lake District, the risk of risk in the risk of porpoons will be further increased.

At present, the Hubei Provincial Yangtze River Ecological Protection Foundation has closely contacted the patrol teams in the nursery distribution areas. No porpoise is stranded, killed, and trapped. Patrol teams in various places are also constantly strengthening patrols. Whether it is the risk of scorching heatstroke, they cannot stop their patrols. Nowadays, the water retreat is serious. Many of the previous waters have become naked beaches. Most of the patrol roads need to walk, and the scope is large. Knowing that they are the closest to porpoons. Only by strengthening the patrol can we ensure more porpoons' safety.

(Picture source: video screenshot)

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