About 700 years ago, when the Italian explorer Kyle Polo first called Hangzhou the greatest city in the world, he could not have known that the water in the West Lake would become so clear.
In 2004, the average transparency of the lake reached 60.07 cm.
According to a report by the West Lake Water Management Office in Hangzhou, the capital of Zhejiang Province in eastern China, this means that objects about 60 cm deep can be seen by the naked eye.
"The West Lake witnessed the best water quality record ever, and the transparency continued to rise," said Wu Zhiying, deputy director of the department.
According to the report, compared with 2003 and 2002, the average clarity of lake water increased by10.65cm and 16.4 1 cm respectively.
Covering an area of 6.5 square kilometers, West Lake is the most important scenic spot in Hangzhou. Iat is famous for its intoxicating beauty for thousands of years. It was originally a shallow sea bay, and later it became a lake due to silt deposition.
In Wu Shuo, the transparency of this water wonderland is attributed to the success of the West Lake Protection Project, which was initiated by the local government in 2003 to improve water quality.
About 400,000 cubic meters of circulating water is introduced into the lake from Qiantang River every day, which means that the water should be completely replaced every month.
Wu Shuo: "This provides1.200 million cubic meters of fresh water for the West Lake every year, and the West Lake has now become a flowing lake." He added that water used to be changed every year.
More importantly, due to the westward movement, the self-purification ability of lakes has been greatly improved.
According to Wu Shuo, this has reclaimed wetlands in the west and expanded the lake area from 5.6 square kilometers to 6.5 square kilometers.
The average depth of the lake increased from 1.65 m to 2.27 m, and its volume was1.4000 m3, which was 40% higher than before.
In Wu Shuo, efforts are being made to build a wastewater discharge system to solve the problem of farmers living nearby dumping wastewater into the lake.
In order to maintain the balance of the ecosystem, more than 1 10,000 plants, a total of about 66 species, have been planted around the lake, making it the habitat of wild ducks and cormorants.
However, in Wu Shuo, the most difficult problem is how to fully restore the ecosystem of the West Lake.
"We still have a long way to go to strike a balance between man and nature," Wu added.
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10 The most beautiful place in America
This is a country with so many natural and man-made landscapes. You can ask all 300 million residents what they like best and expect 300 million different answers. So, how do you choose the most beautiful scenic spots in this country 10?
1. Hongyan Village (sedona, Arizona)
Since the early days of the film, when Hollywood wanted to show the unique beauty of the west, it went to sedona, a place that looked different. Since 1923' s The Call of the Canyon, hundreds of movies and TV programs have been shot in and out of the town. We are also fascinated by the charm of sedona. When discussing our scenic spot # 1, we keep coming back to it for the same reason as Hollywood: the photogenic canyons, windy buttes and striking sandstone towers in this area reflect the rugged character of the west and the central position this character occupies in our national identity. These ancient rocks have a sense of eternity, which inspires the imagination of all people who meet them. American Indians settled in sedona about 1000 years before the film camera discovered it. Yeoman farmers, artists and, more recently, New Age spiritualists followed. Many cultures and agendas abound, but there is only one real attraction: the pure and rich beauty of this place. People come here to seek inspiration and rebirth. The yellow-brown cliffs rise from the pale yellow desert floor, the wind sings in the box canyon, and the sunset seems to make the ancient buttes and spires glow from the inside. We can't resist the call of the canyon. For more information, please visit www.sedona.net.
2. Night view of Mount Washington in Pittsburgh
In a country with many fascinating cities and fascinating stories, it may be our most surprising choice to list Pittsburgh as the second largest scenic spot. However, the aesthetic appeal of this steel city is undeniable, just like its very American renewal ability. Standing at the top of Mount Washington, this steep mountain rises dizzyingly in the south of the city. Visitors enjoy the unforgettable panoramic view of Allegheny River and Monongahela River. These two rivers come together to form the mighty Ohio. This waterway is so important in American colonies. The golden triangle in the center of Rivers Cup is dazzling, where the iconic skyscrapers extend upward like rockets. At night, at least 15 bridges have lights flashing. Almost as amazing as the scenery itself is the urban renewal that makes it possible. A century ago, a thick layer of smoke enveloped the town, and the street lights were on all day. Pittsburgh continues its evolution from a trading post to a transportation hub to an industrial giant, and we cheer for it to become one of the most beautiful and livable communities in the United States again. In city life, nothing is more beautiful and inspiring than the Renaissance. For more information, please visit pittsburgh.net.
3. Upper Mississippi River
For the honor of the third place, we turned to a region that is not as famous as other places, but it is still full of the unique beauty of our country. Its low-key makes it more charming. In order to really appreciate the Mississippi Pier, we left Huck's and Tom's familiar territory and took a detour along the River Road, which runs along the upper reaches of the old Mud River and passes through Illinois, Iowa, Wisconsin and Minnesota. This is one of the most scenic routes in America, winding through hills, towering cliffs, and passing through one river town after another19th century. The scenic spots along the way read like a chapter in American history. The ancient Indian cemetery is dotted with undulating green spaces, side-wheel carts go back and forth on the river, and the villages on both sides of the river present a Gothic model of steamboats. This gorgeous architectural style was born in the heyday of river travel. In Galina, Illinois. 85% of the buildings are on the national historical sites list. In Trenpiro, Wisconsin, the Trenpiro Hotel has been providing a safe haven for tourists since 1888. The real attraction of the whole leisure area is the river itself. Stable and eternal, it is a good travel companion when it rolls to the bay.
4. Napari Coast, Hawaii
On the westernmost edge of this country, half a globe away from the cradle of the American Revolution, we see the anxiety that drove our ancestors from New England to the Pacific Ocean and beyond. They pushed westward in search of heaven. They must have found it among the coral reefs, beaches and misty volcanic peaks of Hawaii's oldest island. Along the Kalalau Trail on the Napari coast of Kauai, the verdant mountains are 4,000 feet straight into the sparkling Pacific Ocean. During a short inland hiking trip, Hankapiai Waterfall pours into a crystal pool, tropical flowers dot the lush hillside, and the game of color and light creates the effect of a localized impressionist painting. Magnificent experience at your own risk: the hardest thing about a trip to Kauai is getting on a plane and going home. For more information, please visit kauaivisitorsbureau.org.
5. Golden Gate Bridge in San Francisco
Engineering miracle, symbol of decorative arts, monument of progress: Golden Gate Bridge is more than just connecting San Francisco and Marin County. The bridge is named after the strait it crosses. It is a 3-mile-long passage between San Francisco Bay and the Pacific Ocean, and it is a grand symbol of one of the most striking cities in the world. This reinforced concrete building with a cost of 35 million dollars was completed in 1937, which embodies the irresistible spirit of a city and the irresistible spirit of the whole country. Against the iconic orange paint, two 750-foot-tall towers that seem to disappear into the sky, and spider webs that stretch like harp strings, the Golden Gate Bridge is different from any building built before. The main suspension span of 4200 feet is undoubtedly the longest in the world. (Almost 70 years later, ranked seventh. Facts and figures tell only a part of the story: the bridge is appreciated as a practical feat, loved as a work of art, and is one of the greatest works in all media in the 20th century. For more information, please visit sfvisitor.org.
6.grafton, Vermont.
If the French explorer samuel de champlain had arrived in Vermont in the autumn of 1609 instead of the summer, he would never have named the land "Vert Mont". In autumn, the foothills of the green mountains with the same name as the state sparkled with red, yellow and orange. One of the best attractions in the Natural Annual Art Exhibition is grafton (right), which is one of the most beautiful villages in the state. Thanks to the efforts of the non-profit organization Windham Foundation, it can be said to be the best preserved village. The foundation has restored more than 50 historic buildings, including the old pub in grafton, which used to be a post station. Other man-made attractions include the award-winning grafton Village Cheese Factory, two elegant New England churches, a natural history museum, some art galleries and almost indispensable covered bridges. But this small village of 600 people doesn't really have beautiful buildings. This is about the virtues of simplicity, humility and saving important things in America. Past and present live in harmony in this important community. In autumn, you will swear that you can hear the brilliant hillside singing. For more information, please visit www.graftonvermont.org.
7. Jenny Lake in Grand Teton National Park, Wyoming
The United States has mountains that are older than the Teton Mountains, and there are also higher mountains. But nothing could be more dramatic. This jagged mountain range was formed 6 to 9 million years ago, when the grinding pressure along the Teton fault caused two huge parts of the earth's crust to separate. On the west side of the rift valley, a uplifted rock formed the Teton Mountains. To the east, an independent plate sinks, forming a valley called Jackson Hole. It is this geological violence that makes the Teton Mountains so spectacular: despite the beauty of the foothills, more than a dozen peaks12,000 feet suddenly rise from the bottom of the valley, which is simply the eruption of granite. In the magnificent scenery, there is the sparkling Jenny Lake (left). Named after Shoshone's bride, a hunter in the19th century, the original, 2.5-mile-long water body reflects the glory of the mountains. Lovely Jenny is very popular with canoeists, hikers and honeymooners, as well as elk, moose and trumpeter swan. Small and dazzling, she is one of the real gems in our brilliant national park system. For more information, please visit nps.gov/grte/.
8. From Kilago to key west, Florida
So little real land, so many associations: coral reefs, deer, manatees, pirates, Kilimanjaro, Silver Palm, gangsters of bogart and bacall Downing in Kilago, and Hemingway's Mojito cocktail of sloppy Joe in key west. It is said that when you pick up this continent and shake it, Florida's free rotation key is the place where everything settles down. One thing is certain: in the Conch Republic, sometimes called key west, an American individualism prevails. Jumping down the fragile, banded 11mile islands on the US1highway, visitors can see things that are not found in other parts of the country. The highest peak is 18 feet above sea level, with the sparkling Atlantic Ocean on one side and the blue-green bay on the other. This continent seems to be just a supplement. In some places, the only thing that separates them is the road itself. The panoramic water fascinates travelers and has a delicious sense of loss. They have merged with the sea. In addition to the famous colorful scenic spots and fauvism sunsets, this is another important reason to visit this charming place. For more information, please visit fla-keys.com.
9. Stone Forest Dome on Appalachian Trail in Great Smoky Mountain National Park
From Georgia to Maine, winding through 14 states, the whole Appalachian Trail is among the best in any scenic gem list. Benton MacKaye, a hiker, first proposed this trail in 192 1 and put it into use as a continuous trail across the eastern states in 1937. This is an immortal achievement, which has given countless Americans a new understanding of the vastness of this land, and it has rewarded the exploration of every mile's footprint. The Klinmans Dome on the eastern edge of Tennessee is 6643 feet high, which is the highest point of the 2 172 mile long route. The surrounding smog has nurtured more than 4,000 species of plants, 230 species of birds and about 65 species of mammals. From the observation deck at the top of the mountain, hikers stared at the misty wilderness and saw the lush forests extending in all directions in the East hundreds of years ago. In the clouds, people feel double awe: the magnificent nature of our country and our responsibility to manage it. For more information, please visit nps.gov/appa/.
10. Square in Savannah, Georgia.
In this charming city, the city and the countryside blend gracefully in a unique southern way-that is, with elegance and infinite mystery. Twenty-two charming public squares (including Columbia Square in the above picture) attract people like secret gardens. They are covered by live oak trees, fragrant with magnolia and surrounded by historical buildings. Visual feast, spiritual comfort, pocket park gathering, quiet retreat and tourist attractions in one. Spanish moss hung romantically in Plaski Square, named after the revolutionary war hero General casimir Plaski. In Chippewa Square, ruled by the statue of James Oglethorpe, the founder of Georgia, pay tribute to the man who made the street planning of Savannah18th century. Forrest Gump's idea is correct: he is thinking about life on a bench in Chippewa Square. For more information, please visit savannah-visit.com.