The hidden dangers of Poyang Lake have not been solved for thousands of years, and what is going on

There are also many surrounding counties to fill lakes and build cities, why.

Due to the frequent human activities, a large number of trees have been cut down and soil erosion is very serious, and the area of the lake is shrinking. The risk of causing flooding is increasing.

First of all, because of China's topography and climate, the rainfall in southern China is concentrated in summer, and the topography of Poyang Lake is not conducive to flood discharge.

Because after thousands of years of development and human activities, soil erosion in the region is very serious.

The long-term drought has led to a rapid drop in the water level of Poyang Lake, the drying up of the riverbed, the serious degradation of the surrounding grassland, and the great impact on agricultural irrigation, which has also caused irreparable damage to the Poyang Lake ecosystem.

The average precipitation in Jiangxi is about 30% less than normal, and the water level of lakes in Jiangxi is generally lower than normal, and the water quality of lakes has deteriorated sharply. The deterioration of the ecological environment of Poyang Lake is more serious than that of the same period in previous years, and a large number of fish in Poyang Lake have died. It is reported that the drought has brought extinction to the local aquatic life in Poyang Lake, and a large number of aquatic life is waiting for rescue in the dry lake.

The water area of Poyang Lake stopped falling and rebounded.

On October 17, 2012, local authorities issued a statement saying that after three months of continuous drought, the water area of Poyang Lake had stopped falling and rebounded. The water level of Xingzi Station, the landmark hydrological station of Poyang Lake, is meters, and the water body of Tongjiang River in the lake area is 301 square kilometers. At present, it seems that the local ecological environment has been effectively improved.

The reasons for the deterioration of the ecological environment of Poyang Lake.

Global warming is the main environmental problem faced by human society today, which is mainly manifested in the increase of carbon dioxide in the atmosphere and the concentration of CO2 in the atmosphere, thereby increasing the greenhouse effect. and contribute to an increase in global temperatures. Due to the influence of human activities, the soil in the Poyang Lake area has been damaged to a certain extent. In addition, some human activities will also have a certain impact on the water quality of Poyang Lake, such as a large number of fish deaths in the lake, and the pollution of other pollutants will have a certain impact on the water quality, which will eventually lead to the deterioration of the water environment and the imbalance of ecological balance in the waters of Poyang Lake, resulting in a sudden climate change in the Poyang Lake area.

With the deterioration of the ecological environment of Poyang Lake, a large number of fish have died in Poyang Lake, which has had a positive impact on the aquaculture industry. According to incomplete statistics, the area of Pohu Lake in Jiangxi Province has decreased by about 1 3, accounting for about 1 3 of the total area of lakes in the country. Aquaculture in the Poyang Lake area not only causes economic losses, but also directly affects the normal life of residents.

It will cause local ecological imbalance. So the impact of drought on the overall environment is still very large, but fortunately, this phenomenon has been alleviated a lot.

It may cause the death or even extinction of some organisms in the water, thus affecting the entire biological chain.

Poyang LakeThere has never been a dryness in history.

Poyang Lake has not completely dried up in its history, but it has had two major droughts. The last drought was between August 2006 and April 2007, when the water surface area was as low as 2,886 square kilometres.

Recently, due to the lack of precipitation, the water from the upper reaches of the Poyang Lake Reservoir basin has decreased, coupled with the severe high temperature and drought in Sichuan, Chongqing and other places in the upper reaches of the Yangtze River, resulting in less water in the upper reaches of the Yangtze River and low water level in the Yangtze River during the flood season, resulting in the water level of Poyang Lake breaking through the lowest water level in the same period in history for 9 consecutive months.

Poyang Lake, formerly known as Peng Li, Peng Lize and Peng Ze, is located in the north of Jiangxi Province, located in the three cities of Jiujiang, Nanchang and Shangrao, and is one of the five largest in China.

One of the freshwater lakes and the second largest in China, after Qinghai Lake.

Poyang Lake is one of the main tributaries of the middle and lower reaches of the Yangtze River and the Yangtze River basin.

a lake of permissive, throughput, and seasonal importance.

Hydrological characteristics of Poyang Lake

Poyang Lake inherits 5 rivers and connects to the Yangtze River, becoming the "catchment basin" of the province, five rivers.

A "transit station" into the river. The hydrological characteristics are that of a shallow lake of throughput and seasonality. The large variation of the seasonal and inter-annual differences in the water level difference between the year remains unchanged, and the intra-annual variation is the same, and the maximum inter-annual variation is reached.

The water level and the area of the lake vary greatly throughout the year, as in the 1976 flood period.

The water level is 21 meters, the lake covers an area of about 3,841 square kilometers, and the volume is about 26 billion cubic meters; During the dry season, the water level of Xingzi is 16 meters, the lake covers an area of about 526 square kilometers, and the capacity is only about 900 million cubic meters.

The high water is a lake, and the low water is like a river, "a flood, a line of dry water", which is the natural geographical feature of Poyang Lake. Poyang Lake plays a huge role in regulating the water level of the Yangtze River, conserving water sources, improving the local climate, and maintaining the ecological balance of the surrounding area.

Summary. 1.The drought in Poyang Lake will affect the local temperature and cause the temperature to continue to rise. 2.The drought in Poyang Lake has left nearby farmland without irrigation water, affecting crop production.

1.The drought in Poyang Lake will affect the local temperature and cause the temperature to continue to rise. Chunju 2The drought in Poyang Lake has left nearby farms and fields without irrigation water, affecting crop production. Skinning.

3.Poyang Lake can provide a relatively stable ecological balance for the local area, and if it enters the dry season, it will reduce biodiversity.

The influence of the stool-like geography can be discussed from the following aspects. For example, the development of local agriculture, animal husbandry, forestry, human production and life, and the local ecosystem.

It will cause a large number of local animals to die, and the number of animals will be greatly reduced. Vegetation also withers and dies in large numbers.

This will have a serious impact on the local ecology, which will affect the growth and development of the finless porpoise.

The first point is that some local ecology and some losses are very large, and the second point is that many things will die, especially many fish will die, which is very miserable.

Due to the prolonged drought, the water level of Poyang Lake has plummeted, so that the falling star pier in the silent water has also reappeared, and the lake is overgrown with green grass and vegetation. Excessive land has dried up. Due to the prolonged drought and lack of rainfall, the water level of the Ganjiang River has also continued to decline.

It is reported that in order to maintain the normal domestic water supply of residents, Nanchang may partially intercept the flow of the Ganjiang River to Poyang Lake. If this is the case, it also indicates that the drought and water shortage situation will remain severe in the future.

The impact on Poyang Lake is still very large, because the drought has led to a reduction in the area of Poyang Lake, which is not conducive to biological diversity.

Of course, there will be a very large impact that will directly lead to the appearance of sandstorms, and the continuous low water level will also affect the travel experience of some people.

According to reports, Poyang Lake, China's largest freshwater lake, entered the extremely dry period early on September 6, and 2022 was the fastest year on record to retreat from the dry level to the extremely dry water level. Let's take a look at how this affects the ecological environment of Poyang Lake.

It has a bad impact on the regulation of the water level of the Yangtze River.

In the summer, there are more thunderstorms, which is a holy horse for rivers and lakes, but this year it will be very abnormal, Poyang Lake has dried up, and the water level has dropped seriously. Poyang Lake was originally a blue lake, but now it is full of mud, all the soil is exposed, many fish have died, the Yangtze River basin has been greatly affected, the entire ecology of Poyang Lake has also caused unimaginable impact, Poyang Lake has entered a dry period, the water level continues to fall, and the drought will continue to have a serious impact on the regulation of the water level in the middle and lower reaches of the Yangtze River.

It has a great impact on the flora and fauna of Poyang Lake.

Climate change has turned what should have been a feng shui area, Buyang Lake, into a waterless area, and the water level has receded due to drought, leaving those fish and shrimp in the zone. Poyang Lake is supposed to be a spectacular green lake, with wild grass, but now that the water is dry, those plants cannot photosynthesize, and the production of oxygen has an impact on animals and plants, and it is impossible to regulate the ecological environment, which is not conducive to the balance of the ecological environment. Well, the geese and birds will prey on nearby farmland, which will reduce the harvest and cause economic damage to farmers.

Bad for the surroundings.

Poyang Lake, which has entered the dry season, usually has a complex environment, and Poyang Lake used to be an important transportation hub and played a very important role in transportation, but now it has dried up. Then the surrounding environment will become dirty and messy, and the management will not be able to carry out normally, which will have an extremely serious impact on the ecological environment. Ensuring domestic water and agricultural irrigation in the lake area, and preventing the adverse impact of the rapid decline of the water level of Poyang Lake on the lake area and its surroundings will also be detrimental to the ecological environment.

It will lead to a variety of problems such as the lack of water in the Yangtze River basin, and the water level will continue to decline and fall, which will cause a variety of problems that will affect the people's drinking water and normal living water, and the people will not be able to live normally, nor can they guarantee agricultural irrigation. A large number of fish in Poyang Lake were pecked and sunburned

China's largest freshwater lake refreshed the earliest record of entering the low dry period, the lake water withered, the greatest impact on this is the creatures in the lake, some organisms may die as a result, followed by the local water level drops, drought will also make some animals and vegetation on land die. Ecological impact.

It has a great impact on the ecological environment, and it is easy to affect the diversity of organisms, resulting in the reduction of organisms in the water, and affecting people's normal water use.

It will make the local ecological environment lack of green plants, resulting in unclean water, and it is easy to cause the destruction of the ecological chain and the reduction of ecological diversity.