Daming Lake.
in recent days, some people discovered that many new dead fish appeared in the new scenic area of Daming Lake. In addition, there were dead tortoises and dead clams. Although the staff of Daming Lake Scenic Area salvaged from time to time, they could still smell a bad smell on the shore of the dead fish. Seeing this, some people think that it is water pollution. Is that really true?
[b] is there so many dead fish in Daming Lake? Is it polluted by water? [/b]
Ms. Zhu lives near Daming Lake. Whenever she is free, she takes her son, who is under three years old, to visit the new scenic spot of Daming Lake. These days, when she was playing with her son here, her son suddenly shouted out, "Mom, there are lots of fish on the water!" Miss Zhu saw a lot of dead fish in her little finger.
"there are dead fish on both sides of the North Zhu bridge. On the west side, I see a dozen, about 10 centimeters long," Ms. Zhu said. In addition to the dead fish near the North Zhu bridge, there are a lot of dead fish before the supernatural tower. She also sees a single kilo of grass carp, which is also floating on the surface of the water.
in addition to these dead fish, Mr. Sun found a dead turtle in front of the supernatural tower of Daming Lake. "The tortoise has the size of the palm of the adult, the black, the whole body swollen, the smell of a stink, and it may have been dead for a long time!" Mr. Sun recalled that Little Turtle was still distressed.
"recently, the water quality is very bad. Looking at something muddy, is the water polluted? Why do these fish and turtles die? " Many people are worried about it.
[b] survey managers are salvaged at any time, but the dead fish are still a lot of [/b]
according to the public's reflection, the reporter came to the new scenic area of Daming Lake on the afternoon of 23. At the East and West ends of the North Bridge, though reporters found dead fish, there were few.
the reporter walked south along the lake and saw four or five dead fish at the edge of the supernatural building. Some of the fish were more than 20 centimeters long and the white body drifted along with the water. On the northeast side of the new scenic area, the number of dead fish began to increase, and some 35 were stacked together.
in the northeast corner of the lake, the most dead fish, some of the dead fish have been rotted, the reporters found that these fish have crucian carp, silver carp, catfish, small goldfish and so on. One catfish is more than a kilogram, and a grass carp has half a kilogram of weight. In addition to fish, there were also some freshwater mussels floating on the northeast side.
two staff members were able to salvage the floating surface of the water, and the reporter saw that there were two trash cans filled with all kinds of objects, including dead fish.
[b], some people at the site of the fish in the forked fish a big catfish [/b]
remove the dead fish, in the lake in the new scenic area of Daming Lake, can also see a lot of dead fish.
next to the water grass in front of the detached building, there are several citizens fishing. Some of them are holding spears, some holding fishing rods, and others holding net bags. "Do you have fish?" After hearing the inquiry, a fish fork replied, "now some people are released in the water, some fish do not adapt, they run to the shore, and often harvest on weekends."
indeed, as the fork fish said, in the northeast corner of the new scenic spot, a more than 60 year old old man used a fork to live a large catfish nearly two Jin. When the old man threw the big catfish on the ground, many people came to see him. Several children were curious to ask what fish they were. And the old man also understood that this behavior was not allowed in the Daming Lake scenic area. After catching the big fish, he hurriedly rode away.
"this is released fish, not suitable for water quality, just upstream. Sometimes when you swim out of the water, some old fork fish men can cross them at once! An old man told reporters closely.
[b] appealed to the dead fish more than a free fish market and no longer free the [/b]
the dead fish in Daming Lake. The reporter contacted Mr. Yin, the manager of the Daming Lake scenic area. He said that the water of Daming Lake was not polluted. "The dead fish are mostly released fish, and the water and water temperature are not suitable for these release." Fish survive and grow, and many fish float out in a few hours. "
Mr. Yin said that Daming Lake has its own ecosystem, and the fish that is released by the public is not only difficult to adapt to the environment here, but it is difficult to survive. And as an alien species, it may also affect the ecosystem of the Daming Lake. Besides, the water temperature in Daming Lake is very low, which is far below the water temperature of the pond. The fish that people buy there can not survive at all.
Mr. Yin said, every weekend, there are a lot of people released, and recently there are some people who want to give birth to them. They have to say, "listen to the old staff and say, the old Daming Lake was forbidden to be released. Now the policy is wide and can be released. But after the release, the large number of fish death is also a damage to the environment. We hope that the public will do the best." Do not send fish, mussels and tortoises into the lake.
Mr. Yin said that in order to protect the environment, the staff salvaged the dead fish in time, and if they found the catch, they would also stop it in time.
[b] blindly released fish survival rate is low [/b]
[b] experts: release also to speak science, otherwise it is likely to bring catastrophic damage to [/b]
September 6, 2009, rainy and continuous, the Tianjin Haihe River hydrophilic platform Liu Zhuang bridge and Guanghua bridge between hundreds of dead fish. It is understood that these dead fish are not the public guess is because of the sudden change of the weather, "turn the pit", but released fish difficult to adapt to the Haihe River environment caused a lot of deaths.
it is understood that most of the fish released by the public are bought directly from the fish dealers, the size is not equal, some are fish, some are ornamental fish, some even give birth to the flowers and carp at home. Because each fish species has different requirements for living environment, the survival rate of fish released blindly will be very low. In addition, the lack of oxygen in cloudy water is also a cause of fish death.
experts point out that the release should also be scientific, or it may cause catastrophic damage. Many alien invasive species and artificial hybrid species have genetic variation. If they are released into the wild, it will bring genetic pollution to the reproduction of the species.
[b] raises [/b]
[b] these fish and turtles do not bring in [/b]
carnivorous fish: snakehead snakehead (also known as fish), southern catfish, mandarin fish (mandarin fish, mandarin fish), bass (also known as the Changjiang sea bass), redfish (also known as white fish), green shoot red, and
City. Common exotic species on the field: big mouth bass (aka California bass), tilapia (also known as African crucian carp), goby catfish, Brazil turtle and snapping turtle.