贝加尔湖畔英语ppt课件.pptx

,Lake Baikal,the worlds oldest and,deepest lake,Lake Baikal ,which today is located near the center of Asia, is most likely the oldest lake in the world. It began forming 25 million years ago as Asia started splitting apart in series of great faults. The Baikal valley dropped away, eventually filling with water and creating the deepest of the worlds lakes.,Lake Baikal is the worlds largest and deepest freshwater lake, known as the blue eyes of Siberia.Type strip is bent, like the crescent moon, so it is called Moon Lake.,It is 636 kilometers long, the average width of 48 km, the width of 79.4 kilometers,the area of 31 thousand and 500 square kilometers, with an average depth of,744 meters, the deepest point of 1620 meters, Lake 456 meters above sea level.,It holds on one-fifth of the worlds total freshwater, which is more than,water in spite of its less than impressive area because,it is by far the worlds lake.,the total of all the water in five great lakes; it holds so much fresh,There are 336 rivers into the Lake Baikal.,Crescent-shaped lake Baikal, in Siberia, is only the ninth largest lake in area at 385 miles620km in length and 46 miles74km in width, yet it is easily the largest body of fresh water in the world. The lake has a variety of marine and plant life.,In the lake to the north into the outlet of the Angara river there is a huge boulder, called the sacred stone.,Beautiful legend,Baikal wild animal, as the most conspicuous of water seal.,Talk of the Lake Baikal, the first thought is the Baikal Lake monster. because the Lake Baikal monster, it covered with a layer of mystery. And because of the Lake Baikal generation age, many rare animals living in the lake, is the worlds most endangered endemic animals plants in Lake, there are 848 species of animals and fish.,The Lake Baikal monster,Problem: waste water of paper pulp is being poured into the lake.,In winter, the frozen lake to 1m above the depth, for 4-5 months. But, the temperature of the deep within the lake has remained the same, about 3.5 degrees Celsius.,Thank you,