Liangzi Lake in Ezhou is the largest freshwater lake in China?

Only drink Changsha water and eat Wuchang fish. "For thousands of years, Liangzi Lake in Hubei Province is famous for its rich Wuchang fish. Last March, the head of the management department of Liangzi Lake warned that if sewage was allowed to enter the lake, there would be no fish in Liangzi Lake in a few years.

Near Jinniu Port in the upper reaches of Liangzi Lake, tens of thousands of acres of lakes, an important spawning ground for Wuchang fish, have been polluted.

As the second largest freshwater lake in our province, Liangzi Lake has always been known for its pure water. Lake water can be drunk directly. However, the monitoring report provided by Liang Zi Lake Administration last year showed that one third of the 420,000 mu of water in Liangzi Lake could not be directly drunk.

In the 1990s, the industrial wastewater from a chemical plant was directly discharged into the lake without treatment, and then it was rectified to meet the standard. Restoring the polluted water quality was not done in a day.

According to the information provided by the Provincial Environmental Protection Bureau, Liangzi Lake was once one of the three major lakes in China. Since Jingtai period in Ming Dynasty, the reclamation area around the lake has been decreasing year by year. At present, the rain-affected area is 2085 square kilometers, the lake is 22.3 kilometers wide from east to west, 82.2 kilometers long from north to south, and the total length of the shoreline is 636 kilometers.

According to the annual average water level, the lake area is about 280 square kilometers. Among them, the territory of Ezhou City is about 90 square kilometers, and the rest of the water surface is under the jurisdiction of Wuhan City. The lake is connected with the Yangtze River along the 45-kilometer-long Longgang in Ezhou City through Fankoumen.

After the liberation of Liangzi Lake ecosystem, it experienced two tests: the first time was Daxing Water Conservancy in 1970s.

Liangzi Lake used to be an open water lake in Tongjiang. The Yangtze River rose, the lake rose, the Yangtze River fell and the lake fell. Later, a Fankou sluice was built on the waterway from the Great Lakes to the Yangtze River, which made it impossible for ships to pass and blocked fish migration. People changed to throwing fry. With tenacious vitality, Liangzihu gradually realized the adjustment from transportation function to storage function.

In the early 1980s, a second test was conducted. Due to the poor management system, the lake area is neglected in management, and the sound of fish frying is constant, and the fish in the lake are almost extinct. 1987, fishing was banned in Liangzi Lake from April to September every year, so that the creatures in the lake could recuperate.

In recent years, with the gradual development of tourism resources, experts are worried and regard the possible negative impact of development and construction as the third test that Liangzi Lake will face.

On the 3rd, the person in charge of relevant departments of the Provincial Environmental Protection Bureau introduced that there are three major pollution sources in Liangzi Lake: agricultural non-point source pollution, industrial wastewater pollution and domestic sewage pollution.

In the rain-fed area of 2085 square kilometers of Liangzi Lake, it is mainly used for agricultural production, and a large number of fertilizers and pesticides flow into the lake with rainwater.

Most of the dozens of towns along the lake have no domestic sewage treatment facilities, and domestic sewage enters the lake through nearby rivers and ports. In recent years, according to the statistics of the provincial environmental protection bureau, only Dongliangzi Lake receives 5 million tons of domestic sewage every year.

Over the years, the provincial environmental protection bureau and other relevant departments, cities with jurisdiction and without jurisdiction but facing the lake, have attached importance to environmental and ecological protection. So far, Liangzi Lake is still one of the five well-protected lakes in China.

However, the difficulty of cross-border management and some blind development trends still put the ecology of Liangzi Lake under great pressure. A few years ago, the management department reported that some business units illegally rounded up the waters, which affected the fish migration routes of the whole Great Lakes, but due to different administrative jurisdictions, they had to do something urgent.

Experts from the provincial environmental protection bureau said that on-site pollution is well solved, but the difficulty is pollution control and surface pollution control. Interpreting this "superficiality", he believes that local governments should base themselves on the overall situation, make good plans before development and construction, ensure environmental impact assessment, and consider ecological benefits in an important position of economic development, rather than pollution first and then treatment. There is still a lot of work to be done in this regard.

Liangzi Lake is the pride of a thousand lakes province. Protecting Liangzi Lake and Hubei has a long way to go.