What other unpolluted lakes are there in China?

The relocation can't be solved for a long time, and the pollution problem is not big?

Lugu Lake is beautiful, and there is almost no pollution.

The inner river valley of Jiuzhaigou County is vertical and horizontal, the terrain is high in the northwest and low in the southeast, mainly high mountains, and some mountains are plains and flat dams, the terrain changes in order, and the altitude difference reaches 2000 meters. The main ditch of Jiuzhaigou is in the shape of "Y", with a total length of more than 50 kilometers. There are many lakes, waterfalls and calcified beach flows in the ditch.

The primeval forest covers more than half of the area of Jiuzhaigou. Jiuzhaigou is a peculiar feature with plateau calcified lakes, travertine waterfalls and calcified beach currents as the main body. Jiuzhaigou is located in the transition zone from the Qinghai-Tibet Plateau to the Sichuan Basin, with complex geological background, wide distribution of carbonates, development of fold faults, strong neotectonic movement, large crustal uplift, and staggered compounding of various forces, creating a variety of landforms, and developing large-scale calcified sediments, dominated by plant karst calcified sediments.

Jiuzhaigou has horn peaks, blade ridges, ice cirques, U-shaped valleys are very typical, hanging valleys, trough valleys. The valley extends to an altitude of 2,800 meters. The groundwater is rich in a large amount of calcium carbonate, and the crystals formed by milky white calcium carbonate can be seen at the bottom of the lake, the lake embankment and the waterside of the lake, which belongs to the carbonate dam landform of high mountains and deep valleys.

It is really a boast of Fuxian Lake, the lake water is clear and smelly.

Fuxian Lake, the lake crystal clear, crystal clear, the ancients called "glazed ten thousand acres", located in Yuxi City, Jiangchuan District, Chengjiang County, Huaning County, the end of the north lake is nearly 52 kilometers away from Kunming, is an important leisure, tourism, vacation destination in the province. Fuxian Lake is the largest water storage lake, the largest plateau deep-water lake, the second deepest freshwater lake in China, belongs to the Nanpan River water system, the lake level is north-south gourd-shaped, and the runoff area of the basin is 1053km2 (including 378km2 of Xingyun Lake).

Fuxian Lake is one of the few unpolluted freshwater lakes in Yunnan and even in the whole country, and it is an inland faulted lake with a fragile ecological environment, and once polluted, it cannot be treated. Therefore, we must protect Fuxian Lake as we protect our eyes, and the water that our children and grandchildren will see in a hundred years will still be as clear as it is now.

Lugu Lake, commonly known as Zuosuohai, the ancient name of Ledehai, Luku Lake, Naxi Mosuo language "Lu" for the ravine, "Gu" for the li, which means the lake in the ravine, the lake is located in Yanyuan County, Sichuan Province and Yunnan Province Ninglang County junction, for the Sichuan and Yunnan co-jurisdiction, the east of the lake is Yanyuan County Luguhu Town (formerly Zuosuo District), the west of the lake is Yongning Township, Ninglang County. [1] The lake is slightly north-west-southeast, north-south long, east-west wide, the shoreline is about 44 kilometers long, the lake area is square kilometers, the catchment area is square kilometers, the maximum water depth is meters, the average water depth is meters, the lake reservoir capacity is 100 million cubic meters, the maximum transparency of the lake water is 12 meters, and the lake surface elevation is 2685 meters.

The largest, the largest water storage, the best water quality is Fuxian Lake in Chengjiang, Yunnan

Fuxian Lake, Lugu Lake, Namco, Yangzhuo Yongcuo, Mapanyongcuo, Chaka Salt Lake.

Fuxian Lake in Yuxi, Yunnan Province must be on the list.

It must be the Fuxian Lake of my family's big river.

China's top 10 famous lakes: Chaohu Lake, Poyang Lake, Dongting Lake, Taihu Lake, Wuhan East Lake, Jiaxing South Lake, Hangzhou West Lake, Yangzhou Slender West Lake, Shanghai Dianshan Lake, Xuanwu Lake, Qiandao Lake. Poyang Lake is the largest freshwater lake in China, there are many strange peaks and caves around the lake, dense forests and valleys, and it is a famous tourist attraction in the country.

Dongting Lake is the second largest freshwater lake in China, connecting the Yangtze River in the north and the four rivers of Hunan, Zi, Yuan and Li in the south. Taihu Lake is the largest lake in the southeast of China, located in the west of Suzhou City, Jiangsu Province, spanning Jiangsu and Zhejiang provinces, the lake surface is 2425 square kilometers, there are 48 large and small islands in the lake, there are mountains in the lake, the mountains and rivers are reflected, the scenery is beautiful, and there are many scenic spots.

Hangzhou West Lake is located in the west of Hangzhou, surrounded by mountains on three sides, the green mountains around the lake are stacked and green, the flowers and trees are luxuriant, the scenery is different in the four seasons, the scenery is charming, and the literati and writers of the past dynasties have praised the works with poems. Wuhan East Lake is located in the eastern suburbs of Wuhan City, which is the most extensive and beautiful scenic spot in Wuhan. Yangzhou Slender West Lake is located in the western part of Yangzhou.

The lake is full of light, the garden is elegant, like a landscape painting, along the lake there are long causeway spring willows, Xu Garden, Xiaojin Mountain, Diaoyutai, Wuting Bridge and other scenic spots Shanghai Dianshan Lake is located in the west of Qingpu District, Shanghai, with an area of 60 square kilometers, the lake water is clear as a mirror, rich in the scenery of the water town in the south of the Yangtze River, it is the largest tourist area in Shanghai.

Lop Nur is located in the eastern part of the Limu Basin in the northwest, and in the middle of the Qing Dynasty, Lop Nur was still a lake with a large amount of water, with more than 20,000 square kilometers of water. The northwest is deep in the belly of the Asian continent, the climate is cold and dry in winter, the high temperature and precipitation are scarce in summer, the surface evaporation is relatively large, the continental climate is significant, the formation of a vast area of desert Gobi, Lop Nur Lake is mainly the Talimu River and the Altai Mountains. The glacier water supply of the snow peaks of the Tianshan Mountains is the mainstay.

Lop Nur is a lake formed by aeolian accumulation, under the action of high pressure in Siberia, Mongolia, especially under the cold and dry winter wind, the sand grains and pebbles in the area around Lop Nur in the east of the Tarim River are constantly weathered, transported and deposited, forming Gobi sand dunes, and the sand dunes are constantly moving under the force of the wind, making the area around the original sand dune that is, the area near Lop Nur become potholes.

The water surface of Lop Nur Lake is lower than the diving layer line, which leads to the continuous expansion of the area of Lop Nur Lake, and the lake area of Lop Nur reached more than 10,000 square kilometers in its heyday. Later, people did not pay attention to environmental protection, indiscriminate logging, overgrazing, many desert oases in the northwest were gradually destroyed, and Lop Nur gradually shrank and disappeared.

With the improvement of people's awareness of environmental protection, the Northwest Shelter Forest has been set up in the northwest region to protect against sand and dust storms, plant trees and grasses, and conserve water sources.

Yunmengze is located in the middle reaches of the Yangtze River, is a huge waterlogged lake in ancient times, recorded in the ancient history books, Dongting Lake is the lake left by the shrinkage of Yunmengze in ancient times, Yunmengze Lake in its heyday can reach more than 100,000 square kilometers of water. Yunmengze is a dammed lake with a huge area of water.

In the spring and autumn period, the middle and lower reaches of the Yangtze River are still swampy, rich in aquatic grass, lush vegetation and primitive forest area, Yunmengze is located in the low-lying middle reaches of the Yangtze River, with climate change, human activities, and landform changes, especially the landform rocks at the outlet of Yunmengze flowing into the Yangtze River are corroded and eroded by the water flow, resulting in the rock breaking and overflowing of the lake, and the water of Yunmengze Lake continues to flow out and gradually shrinks, and finally only Dongting Lake remains.

Kunoze (Qingtu Lake), Danyang Lake, Yunmengze, and Lop Nur are relatively large lakes in our country, but later due to the decrease in precipitation and the drop in water level, these artillery pieces have disappeared.

Of course, there are, such as Onozawa, which was the largest lake in the north in ancient times, but unfortunately it has since disappeared.

Like Poyang Lake, Dongting Lake, Chaohu Lake, Qinghai Lake, Crescent Spring, etc.

It is mainly industrial wastewater pollution and garbage pollution that deteriorate the soil environment and seriously affect the growth of crops. The degradation time of plastic products currently used in China usually takes at least 200 years. The waste agricultural film and plastic bags in the farmland remain in the field for a long time, which will affect the absorption of water and nutrients by crops, inhibit the growth and development of crops, and reduce crop yields.

If livestock eats plastic film, it can cause digestive diseases and even death of livestock. The reason is the problem of water environment pollution The pollution degree of China's seven major water systems is: Liaohe River, Haihe River, Huaihe River, Yellow River, Songhua River, Pearl River, and Yangtze River, of which 42% of the water quality exceeds the 3 category standard (can not be used as a drinking water source), and 36% of the country's urban river sections are inferior to 5 categories of water quality and lose their use function.

The water quality of large freshwater lakes (reservoirs) and urban lakes is generally poor, and more than 75% of the lakes have increased eutrophication, mainly caused by nitrogen and phosphorus pollution.

Non-point source pollution has gradually replaced point sources as the leading factor in lake water quality problems in the world.

Point source pollution is the main source of pollution in most lake basins in China, which has the characteristics of fixed discharge location and relatively stable discharge, and systematic regulation and control of it is essential. Non-point source pollution mainly comes from urban runoff, farmland fertilizer use, soil erosion, livestock and poultry breeding, etc. With rainfall and agricultural irrigation, these pollutants flow into the lake and cause pollution.

Wang Hao, academician of the Chinese Academy of Sciences and director of the Institute of Water Resources of the China Institute of Water Resources and Hydropower Research, believes that for a long time, point source pollution from wastewater discharge from industrial and urban sewage treatment plants has been regarded as the main source of pollution into the lake, and China's lake management is mainly aimed at these point source pollution. With the increasing understanding of the environmental problems of lakes and their basins, non-point source pollution has gradually replaced point sources as the leading factor in lake water quality problems in the world, but its control is still in its infancy in China.

Qin Boqiang, a researcher at the Nanjing Institute of Geography and Limnology of the Chinese Academy of Sciences, also said that non-point source pollution is an important factor in lake pollution. Due to the influence of soil, climate and topography, non-point source pollution has the characteristics of randomness, extensiveness and lag, so it is difficult to control, and the reduction of pollutants into the lake is an important challenge for the world and China.

To address this problem, many experts have suggested that the relevant authorities should adopt a more systematic approach to the lake basin as a whole, and at the same time raise public awareness of environmental protection and restore the lake ecology at the source.

Main pollution factors: total nitrogen, total phosphorus and other nutrients and ozone-depleting organic matter pollution.

Hazards: Rapidly improve the nutrient level of the lake, accelerate the evolution process of the lake to eutrophication and even swamping, affect the lake ecology, reduce the use function of the lake water, and in serious cases, it will produce algae outbreaks, destroy the ecological environment of the lake, and turn the lake into a dead lake.