Thousands of dead fish appear in a lake in Mudanjiang, China

Expert: mainly due to anoxic water

Management: taking water, disinfection and other measures to remedy

19 am, Ms Lau said the writer who, in Mudanjiang City, People’s Park, the vast lake and no fish hit the lake ripples from the fleet into a piece of dead fish turned up white belly, and even individual tourists on the shore fishing picking up. Experts said the death of fish last big snow ice thickness, and the other low lake level, but also lead to poor water quality incentive dead fish phenomenon. Park management department, said being taken disinfection, water and other remedial measures, and cleaning up after dead fish will be transported to the waste treatment plant for safe disposal.

Rebellion: a few small pieces of dead fish into five or six pounds two

People’s Park is located in Mudanjiang city center area, is the city’s largest comprehensive park, is an important public leisure and tourism attractions.

“Listen neighbor said the park thousands of dead fish appeared, under the curious I want to go check it out.” 19 am, Liu Baoliao seven road from the east side of the entrance into the park, not far out, the smell to Lake redolent stench. After a hundred meters along the corridor to the west out of the reach the lake, I saw most of the lake has receded, the exposed lake bottom edge of the dry plants clearly visible. In relying on the north side of the lake, a large number of dead fish floating dew water, and was pushed to the lake shore, mainly carp and grass carp, big five or six pounds, small as several two.

This piece ten hectares along Lake bypass week, Sharon did not find a significant source of pollution, such as sewage outfall. “The way the elderly are also encountered several dead fish with a wooden fishing picking up, they did not think the lake pollution, so pick a few dogs and cats should be nothing to go home to feed the problem.” Liu told reporters, People’s Park in 2007 conducted before and after the transformation, the lake area to further expand, but never dead fish similar phenomenon occurred. “This year, the spring after the snow melts as the lake, there are dead fish float to the gradual and increasingly, some fish soak in the lake has even begun to rot, emitting a foul odor.”

Expert: Snow large body of water ice thickness caused by hypoxia

So, why the fish’s death in the end? Dead fish salvaged what should I do? How to remedy the remaining fish survive?

22, the reporter interviewed the Heilongjiang Fisheries Research Institute Director of the General Office Chang Wanquan. According to him, after the spring, the fish in the lake will be a large area of ​​death, mainly because the fish die of suffocation. Because the thick snow of winter ice cover, photosynthesis of aquatic plants will weaken when through the long winter, due to the long-term lack of oxygen in the water, causing the fish to death.

“These fish do not eat, can not do fertilizers, to prevent the spread of disease.” Chang Wanquan reminded that, for the prevention of such issues should begin before the winter, on the one hand to increase fish nutrition, improve water quality, enhance fish’s immune force. Sprinkle disinfectant drugs before winter, after the winter, throwing the bag disinfectant in the water, when it snows, clean ice area of ​​snow, so the fish of oxygen. After the spring, as soon as the pool opened, allowing the fish to recuperate, increase nutrition.

Chang Wanquan said that dead fish have an impact on water quality, but as long as good water disinfection, the remaining fish can survive.

Management Department: dead fish will sound processing

Subsequently, the reporter interviewed the Director Sun Mudanjiang City, People’s Park, she said the fish deaths occurred last year in several snow related, in addition, the lake level is low, the water does not flow, but also lead to poor water quality incentive dead fish phenomenon.

Currently manpower is being organized salvage park clean-up, the estimated total number of thousands of dead fish, less than half the total number of fish in the lake. Salvage clean up completely after the Ministry of dead fish will be centralized waste treatment plant for treatment and disposal.

Director Sun said that at present the park has been planned diversion from a nearby overpass, the current pipeline has been laid, ready at the appropriate time to carry out the lake water, lake water levels increase. In addition, they have just injected into the lake 60 tons of lime, for disinfection to purify the lake water quality. At the same time, they also try to use some weeding reagents for lake weeds, phytoplankton, plankton for processing. In the future, they will also develop specific conservation plans, let the people park lake more clear, to avoid recurrence of dead fish phenomenon. (Reporter Hao Qu significant)

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