At the earliest time, Xingkai Lake was not a border lake. In the early Qing Dynasty, it was completely owned by China and could have become the largest freshwater lake in China. However, after the signing of the Beijing Treaty between China and Russia in 1860, it became a boundary lake.
Xingkai Lake is divided into two lakes, one is 100 kilometers in the north, the other is 60 kilometers in the east and west, with an area of 4,380 square kilometers. The elevation of the lake is 69 meters, the deepest part is 10 meter, and the total storage capacity is about 24.026 billion cubic meters. The small lake, also known as Dabaku Lake, is 4.5 kilometers wide from north to south, and the water level is relatively higher than that of the big lake!
Xingkai Lake is the largest lake on the Sino-Russian border, with a water area of 4,380 square kilometers, of which 1280 square kilometers is in Mishan, Jixi City. Xingkai Lake is rich in water resources, and the most famous ones are white fish (culter ilishaeformis) and white shrimp. Of course, in addition to these two characteristics, the four major fish, crucian carp and abalone are also very famous!
However, with the continuous fishing of China and Russia over the years, the fishery resources of Xingkai Lake have also shown a lack. Therefore, in order to protect the fish resources in Xingkai Lake, it has become a fishing ban from June 6 to July 20 every year.
The biggest characteristics of the great white fish in Xingkai Lake are: white as jade, heavy (up to 10 kg), tall and well-developed, and famous for its good swimming. And the white fish in Xingkai Lake is fresh and tender, the salmon in Wusuli River and the beachhead fish in Suifenhe River are also called "three treasures in the cold side".
However, with the increase of fishing quantity over the years, the number of white fish in Xingkai Lake is declining sharply. In severe cases, it even reached an "endangered" state. In order to continue the racial reproduction of white fish and help restore the ecology of Xingkai Lake.
In 2002, the artificial incubation of "big white fish" was successfully completed, and the relevant departments began to implement the value-added release action. Up to 20021year, Mishan City has released more than 70 million economic fishes into the waters of Xingkai Lake, among which more than 4.5 million "big white fish" fry.
Some people say that overfishing is the biggest factor that causes fish reproduction to keep up with the rhythm, but it is not!
The reason why the white fish in Xingkai Lake is scarce is that fishing is only a small aspect. The real reason is the "invasion of alien species".
Xingkai lake is affected by environmental and climatic factors. Now it has become one of the few large freshwater lakes in the world that have not been polluted.
Because of the good water quality, in order to improve the economy of fishery resources. The whitebait with considerable economic value was introduced into Xingkai Lake. In the 1960s and 1970s, whitebait once became the main economic fish species in China. The catch of whitebait brought considerable economic benefits to Taihu Lake and Poyang Lake at that time.
Big whitebait: the whole group of pointed whitebait and long-finned whitebait. Whitebait, also known as striped fish and noodle fish, is a ferocious fish with no stomach, which can grow to 15 cm at most!
Whitebait is a kind of fish rich in calcium, high in protein and low in fat. It basically has no big fishbone and is suitable for children. According to modern nutritional analysis, whitebait is rich in nutrition and has the characteristics of high protein and low fat. Moreover, whitebait does not remove fins and bones, which is a "holistic food" with complete nutrition, which is conducive to improving human immune function and longevity.
For the preliminary test, the correlation is only in Xiaoxingkai Lake as a test point to verify the feasibility.
Unfortunately, unexpectedly, the big whitebait died in Xiaoxingkai Lake. At this point, the relevant departments have completely abandoned the introduction plan of whitebait in Daxing Kaihu Lake.
However, as the old saying goes, "intentional flower arrangement can't bloom, and unintentional willows are shaded." When the flood season comes, Xiaoxingkai Lake drains and floods, and the residual whitebait in the lake finally flows into the Great Lake.
To everyone's surprise, the whitebait has taken root and propagated in Daxing Kaihu Lake, and it has been flooded.
After the big whitebait settled in, the number of whitebait in the lake area began to decline sharply. Since 1980s, 80% of the total catch in Xingkai Lake has come from white fish. By 20 10, whitebait has become the main source of fishing economy, in which the catch of whitebait is 36.4%, while that of whitebait is only 7.7%.
Since it entered Xingkai Lake, the whitebait has been eating fish and shrimps and even fish eggs in this lake area for survival and reproduction.
It is also for these reasons that the big whitebait completely took the upper position and properly became the "first brother" of Xingkai Lake.
Because whitebait itself is small and slender, for fishing. Fishermen use a high-density fishing net for their operations, which is similar to today's "homeless net".
Although whitebait can be successfully caught by high-density nets, it also hurts the fry of other fish species and even young fish in disguise. This also casts a shadow over the survival of other fish species in Xingkai Lake!
The introduction plan of whitebait in Xingkai Lake can better improve the local fishery economy. However, the plan is equivalent to a "double-edged sword", which improves the economic value, but brings destructiveness to the ecological balance of Xingkai Lake itself.
The sharp decline in the number of white fish in Xingkai Lake is a living example. If it weren't for the value-added release, the days when white fish lived in Xingkai Lake would be almost over.
Perhaps one day in the future, the whitebait may develop into an "invasive species" in Xingkai Lake, and the ecological environment situation in the lake area is worrying!
What do you think of the white fish and whitebait in Xingkai Lake? Please leave a message in the comment area for discussion! !