Dongting Lake is the second largest freshwater lake in China. 15

It is one of the five major freshwater lakes in China and an important throughput lake in the middle reaches of the Yangtze River. The lake area is located on the south bank of the Jingjiang River, spanning Hunan and Hubei provinces, between 28 30 30 20 north latitude and 110 40 113 10 east longitude. The lake area covers an area of 10,000 square kilometers, with a natural lake of 2,740 square kilometers and an inner lake of 1,200 square kilometers.

Region :Hunan.

Area: sq km.

Depth: Maximum depth meters.

Volume: 100 million cubic centimeters.

Genetic type: Tectonic lake.

Ecological characteristics: the water quality of Dongting Lake is relatively clean, eutrophication is not obvious, the main pollutants through precipitation make the harmful substances in the atmosphere follow the rainwater to the lake, is one of the ways for pollutants to enter the lake, the main substances entering the Dongting Lake with the rainwater are SO, CO, NOX and soot, and the harmful toxic substances mainly include mercury, cadmium, hexavalent chromium, arsenic, lead, phenol, cyanide, sulfide; Dongting Lake is the main freshwater commercial fish base in China, with 113 species of fish, belonging to 11 orders and 22 families, of which 102 species are shared with the upper reaches of the Yangtze River, including 65 species of carp, 10 species of catfish, 9 species of loach, 6 species of fins, 3 species of silver, 2 species of catfish and 2 species of catfish, and 16 other species. The catch is 15,000-30,500 tons, and the main economic fish are herring, grass carp, silver carp, bighead carp, carp, crucian carp and red-eyed trout.

Morphological description: Dongting Lake presents a landform landscape of water swamp and river network plain, surrounded by mountains on the east, south and west, and an open horseshoe-shaped basin in the north, high in the northwest and low in the southeast. The average elevation of the lake is 33 5 meters, including 35 36 meters in the West Dongting Lake, 34 35 meters in the South Dongting Lake, 33 34 meters in the East Dongting Lake, the average water depth is 6 7 meters, the deepest meter, the total area is about 2691 square kilometers, including 345 square kilometers in the West Dongting Lake, 917 square kilometers in the South Dongting Lake, 1478 square kilometers in the East Dongting Lake, and the lake water storage capacity is 17.8 billion cubic meters; Sediment mud or silt type; The main rivers entering the lake are Xiangjiang River, Zijiang River, Yuanjiang River, Li River Four Waters, Yangtze River Sankou, Miluo River, Lotus East Branch, Huarong River.

Dongting Lake is the second largest freshwater lake.

Dongting Lake is the second largest freshwater lake in China, located on the south bank of the Jingjiang River in the middle reaches of the Yangtze River, spanning Yueyang, Miluo, Xiangyin, Wangcheng, Yiyang, Yuanjiang, Hanshou, Changde, Jinshi, Anxiang and Nanxian counties. In ancient times, it was known as "Eight Hundred Miles of Dongting". The name of Dongting Lake began in the Spring and Autumn Period and the Warring States Period, and was named after Dongting Mountain (now Jun Mountain) in the lake.

Dongting Lake is an important storage lake in the Yangtze River Basin, with a strong flood storage capacity, which has saved countless floods in the Yangtze River, and the Jianghan Plain and the three towns of Wuhan have been able to safely cross the flood. Dongting Lake is an important strategic place in history, the birthplace of Chinese traditional culture, and there are many scenic spots in the lake area, and the historical sites represented by Yueyang Tower are important tourism and cultural resources.

It is also the birthplace of traditional Chinese agriculture, and the most important commercial grain and oil base, aquatic products and breeding base in Hunan Province and even the whole country.

Freshwater lakes

Refers to lakes that accumulate on the surface of the earth in the form of fresh water. Freshwater lakes are divided into two types: closed and open: closed freshwater lakes are mostly located in high mountains or inland areas, with no obvious river inflow and outflow; Open freshwater lakes can be quite large, with islands and multiple rivers flowing into and out.

Freshwater lakes are generally outflow lakes; Because the water source can be renewed, the water in freshwater lakes has a low salinity. The largest freshwater lake in the world is Lake Superior, and the largest freshwater volume is Lake Baikal.

The largest freshwater lake in China is Buyang Lake, followed by Dongting Lake, Taihu Lake, Hongze Lake, Hulun Lake, Chaohu Lake, and Gaoyou Lake. The largest man-made freshwater lake in Asia is the Danjiangkou Reservoir and the source of water for the middle route of China's South-to-North Water Diversion Project.

Dongting Lake is the second largest freshwater lake in China, located in the territory of Beiduwu Province in Hunan, China, known as Dongting for 800 miles in ancient times, with an area of about 2,500 square kilometers. The Tang Dynasty poet Meng Haoran wrote, "The level of August Lake is too clear." The steaming cloud Mengze shook Yueyang City.

It is the scenery of Dongting Lake depicted.

As the largest river lake in China, Dongting Lake has a strong flood storage capacity, which has repeatedly saved the Jianghan Plain during the flood season of the Yangtze River. In addition, Dongting Lake also plays a huge role in agricultural production and aquaculture, and the famous land of fish and rice is also derived from this.

Since ancient times, the beauty of Dongting Lake has been praised by people. Dongting Lake was called Yunmengze in ancient times, and there are records about Yunmeng, that is, Dongting Lake in ancient books such as "Historical Records Imitation Liquid" and "Zhou Li", and the name of Dongting Lake was handed down from the Spring and Autumn Period and the Warring States Period, because at that time, Junshan in the lake was called Dongting Mountain, and the name of Dongting Lake came from this.

They are: Poyang Lake.

Poyang Lake is located in the northern part of Jiangxi Province, on the south bank of the Yangtze River, and is the largest freshwater lake in China.

Dongting Lake. Dongting Lake is located south of the middle reaches of the Yangtze River in northern Hunan Province and is the second largest freshwater lake in China. Taihu Lake.

Taihu Lake is located at the junction of Jiangsu and Zhejiang provinces, in the south of the Yangtze River Delta, and the lake area belongs to Jiangsu Province. It is the largest lake in the coastal area of eastern China and the third largest freshwater lake in China. Hongze Lake.

Hongze Lake is located in the western part of Hongze County, Jiangsu Province, on the Huai River.

In the middle reaches of the alluvial plain is the fourth largest freshwater lake in China.

The south of Poyang Lake is 173 kilometers long, the widest point from east to west is 74 kilometers, the average width is kilometers, the shoreline is 1,200 kilometers long, the lake surface area is 3,283 square kilometers when the water level of the lake mouth is meters, the average water depth is meters, the deepest meter is about one meter, and the water storage is about 27.6 billion cubic meters, which is the largest freshwater lake in China. Poyang Lake is a seasonal lake with huge seasonal changes in area and water storage, and there is a huge difference in area and water storage between the flood season and the dry season. Dongting Lake consists of four larger lakes: East, West, South Dongting Lake and Datong Lake.

In the southern part of Hubei Province, the central and northern part of the Hunan Provincial League, and the south bank of the Yangtze River. There are Songzi, Taiping, Lotus Pond and 4 tuning ports in the north (blocking the tuning port in 1958) to divert river water, and there is Xiangjiang River in the south and west of the book.

Zishui, Yuanjiang and Li water are injected. The lake water is discharged into the Yangtze River through Chenglingji. Usually, there are 4 mouths and 4 water inflows into the lake every year, and the flood peaks are staggered with each other.

There are more than 180 large and small lakes in the Taihu Lake water system, and together with the large and small rivers entering and leaving the lakes, they form a dense water system like a spider's web. It is very beneficial for state or front navigation, irrigation and regulating the water level of rivers and lakes. The Jiangnan Canal is the Beijing-Hangzhou Grand Canal.

It leads the Yangtze River water from the mouth of Zhenjiang to the south, passes through the numerous rivers and lakes of the Taihu Lake water system, swallows rivers and lakes, regulates the water volume, and becomes an important main stream of this water network. The whole shape of Hongze Lake resembles a swan with its head held high and ready to fly. Because Hongze Lake is developed in the depression of the alluvial plain, the bottom of the lake is shallow and flat, the shore slope is low and gentle, and the bottom of the lake is 4-8 meters higher than the eastern northern Jiangsu Plain, becoming one"Hanging Lake"。

Before the control of Huai, Hongze Lake was vast.

One piece, with neither a fixed shore nor a definite shape. With reference to the management of the Huai River, Hongze Lake has also been remediated. The eastern embankment of the lake area is now 50 meters wide and 67 kilometers long, almost entirely made of basalt.

of strips of stone.

Dongting Lake is not the largest freshwater lake in China. The largest freshwater lake in China: Poyang Lake, with an area of 3,150 square kilometers. The area of Dongting Lake is square kilometers.

Poyang Lake, formerly known as Pengze, is the largest freshwater lake in China and the second largest lake in China. It is located in the north of Jiangxi Province, on the south bank of the middle and lower reaches of the Yangtze River, with latitude 28°22 to 29°45 north latitude and 115°47 to 116°45 east longitude.

Dongting Lake, known as Yunmeng, Jiujiang and Chonghu in ancient times, is located on the south bank of Jingjiang in the middle reaches of the Yangtze River, spanning Yueyang, Miluo, Xiangyin, Wangcheng, Yiyang, Yuanjiang, Hanshou, Changde, Jinshi, Anxiang and Nanxian counties.

In the northern part of Hunan Province, it is the second largest freshwater lake in China.

Dongting Lake, located south of the middle reaches of the Yangtze River in northern Hunan Province, is the second largest freshwater lake in China.

It covers an area of about 2,625 km during the dry season, more than 3,900 square kilometers during the flood season, and a total area of 18,000 km in the lake area.

The volume is 120 billion cubic meters. The main rivers entering the lake are Xiangjiang, Zishui, Yuanshui and Lishui.

Spanning Hunan and Hubei provinces, it connects the Yangtze River in the north and Hunan, Zi, Yuan and Xushui in the south, and is known as the "Eight Hundred Miles of Dongting Lake".

Dongting Lake means Immortal Cave, which shows the beauty and charm of its scenery. Its biggest feature is that there is a lake outside the lake and a mountain in the lake.

The scenery of the lakeside is extremely beautiful, and many scenic spots are national scenic spots, such as: Yueyang Tower, Junshan, Du Fu's Tomb, Confucian Temple, Longzhou Academy and other places of interest.

Dongting Lake is famous as the land of fish and rice, and its products are extremely rich.

The specialties of the lake include river mussels, yellow eels, Dongting crabs and other precious river freshness. The "lake within the lake" lotus lake of Dongting Lake is rich in well-known Hunan lotus at home and abroad.

Xianglian is full of grains, the meat is fresh and tender, and it has been regarded as a treasure in the lotus in the past dynasties.

Dongting Lake is located in the northern part of Hunan Province and is the second largest freshwater lake in China.

In the northern part of Hunan Province, south of the Jingjiang section of the Yangtze River, it is the fourth largest lake in China, after Qinghai Lake, Xingkai Lake and Poyang Lake, and the second largest freshwater lake in China.

Dongting Lake was known as Yunmengze in ancient times, the north of Hunan Province, the south bank of the Yangtze River, the lake area spans Hunan and Hubei provinces in the north, connects the four rivers of Hunan, Zi, Yuan and Xushui in the south, and is known as the second freshwater lake of 800 Dongting Lake.

They are Poyang Lake in Jiangxi Province, Taihu Lake and Hongze Lake in Jiangsu Province, and Chaohu Lake in Anhui Province.

A water lake is a lake with a low salt content of the water. China's freshwater lakes are mainly distributed in the plains of the middle and lower reaches of the Yangtze River, the lower reaches of the Huai River and the southern part of Shandong, and the lake area in this area accounts for about one-third of the total lake area in China. The Great Lakes of China refer to the five largest freshwater lakes in China, namely Poyang Lake in Jiangxi Province, Dongting Lake in Hunan Province, Taihu Lake and Hongze Lake in Jiangsu Province, and Chaohu Lake in Anhui Province.

Poyang Lake was called Pengze in ancient times, with an area of 3,914 square kilometers, is the largest freshwater lake in China, it bears the water of Jiangxi, Fu, Xin, Rao, Xiu five rivers, and passes the Yangtze River downward, it is wide in the south and narrow in the north, like a huge gourd tied to the waist of the Yangtze River, the water that flows into the Yangtze River every year exceeds the total flow of the three rivers of the Yellow River, the Huai River and the Haihe River, and is the regulator of the water flow of the Yangtze River.

Dongting Lake is the second largest freshwater lake in China, spanning Hunan and Hubei provinces, it connects the Yangtze River in the north, and connects the four rivers of Hunan, Zi, Yuan and Li in the south, known as the "Eight Hundred Miles of Dongting Lake". Dongting Lake means Immortal Cave, which shows the beauty and charm of its scenery. Its biggest feature is that there is a lake outside the lake and a mountain in the lake.

Dongting Lake is famous as the land of fish and rice, and its products are extremely rich.

Taihu Lake is located at the junction of Jiangsu and Zhejiang provinces, in the southern part of the Yangtze River Delta. It is the largest lake in the eastern coastal region of China and the third largest freshwater lake in China. With an area of 2,400 square kilometers and a basin area of 36,895 square kilometers, it is the most important water source in Shanghai, Suzhou, Xichang and Hangjiahu areas.

The song "Taihu Lake Beauty" made Taihu Lake famous all over the world.

Hongze Lake is located in northern Jiangsu, Jiangsu Province, is a shallow water lake, the water depth is generally within 4 meters, the maximum water depth is meters. In addition to atmospheric precipitation, the water of the lake mainly depends on the water from the river. The rivers flowing into Hongze Lake are concentrated in the western part of the lake, including the Huai River, the Sui River, the Bianhe River and the An River.

The three rivers and the main irrigation canal in northern Jiangsu are the main channels that divide Hongze Lake into the Yangtze River and into the sea. Hongze Lake bears Huai water, drains the Yangtze River in the south, and injects the Yellow Sea in the east, the lake is 65 kilometers long, the average lake width is 24 26 kilometers, and the water area reaches 1576 9 square kilometers, which is the largest area in the plain reservoir type lake in China.

Chaohu Lake is located in the central part of Anhui Province, between the Yangtze River and the Huai River, and belongs to the left bank of the lower reaches of the Yangtze River, and is one of the five major freshwater lakes in China. Its basic shape is like a bird's nest, so it is named Chaohu Lake. It is kilometers long from east to west, 21 kilometers wide from north to south, with a water area of about square kilometers, which is the largest lake in Anhui Province, and is surrounded by Hefei City, Chaohu City and Lujiang County along the coast.

The Great Lakes of China refer to the five largest freshwater lakes in China: Poyang Lake in Jiangxi Province, Dongting Lake in Hunan Province, Taihu Lake and Hongze Lake in Jiangquansu Province, and Chaohu Lake in Anhui Province.

Freshwater lakes are lakes with low salt content. China's freshwater lakes are mainly distributed in the plains of the middle and lower reaches of the Yangtze River, the lower reaches of the Huai River and the southern part of Shandong, and the lake area in this area accounts for about one-third of the total lake area in China.

Panyang Lake in Jiangnan Province, Taihu Lake and Hongze Lake in Jiangsu Province, and Chaohu Lake in Anhui Province.

There are Poyang Lake, Taihu Lake, Zehu Lake and Chaochao Lake.

Dongting Lake used to be the largest freshwater lake, but in ancient times, due to lack of food, more than half of the lake was filled in to farm, and now Dongting Lake is not one-eighth of what it used to be.