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China's Melting Glacier Brings Visitors, Adds to Climate Concerns

时间:2018-10-29 14:43来源:互联网 提供网友:nan   字体: [ ]
    (单词翻译:双击或拖选)

 

Each year, millions of people visit the 4,570-meter-high Baishui Glacier1 in southern China. Scientists say it is one of the world’s fastest-melting glaciers2.

The huge body of ice is in the southeastern edge of a Central Asian region called the Third Pole. It is about 4.5 million square kilometers in area and holds the world’s third largest collection of ice after Antarctica and Greenland.

Third Pole glaciers are critical to billions of people from Vietnam to Afghanistan. Seasonal3 glacier melts feed Asia’s 10 largest rivers, including the Yangtze, Yellow, Mekong, and Ganges.

Ashley Johnson is an energy, trade and economics4 expert at the National Bureau of Asian Research, based in the United States. She says the Third Pole is one of the world’s largest sources of fresh drinking water. She says an increase in melting from climate change may put that at risk.

Johnson said, “Depending on how it melts, a lot of the freshwater will be leaving the region for the ocean, which will have severe impacts on water and food security."

Earth is one degree Centigrade hotter than in pre-industrial times. The United Nations Intergovernmental Panel5 on Climate Change recently reported that that rise is enough to melt 28 to 44 percent of glaciers worldwide. And temperatures are expected to keep rising.

Baishui is about as close to the equator6 as Tampa, Florida. And the effects from climate change are already extreme.

A report this year in the Journal of Geophysical Research showed that the glacier has lost 60 percent of its mass. Since 1982, it has shrunk by 250 meters.

In 2015, scientists found that 82 percent of glaciers studied in China had decreased in size. They warned that the effects of glacier melting on water resources are becoming “increasingly serious” for China.

Jonna Nyman is an energy security expert at the University of Sheffield in England. She said, “China has always had a freshwater supply problem with 20 percent of the world’s population but only 7 percent of its freshwater.

“That’s heightened7 by the impact of climate change,” she added.

For years, scientists have observed global warming change Jade8 Dragon Snow Mountain in the Chinese province of Yunnan.

One research team has recorded Baishui’s decrease at about 27 meters per year over the last 10 years. Wang Shijin is a glacier expert and director of the Yulong Snow Mountain Glacial and Environmental Observation Research Station. The station is part of a group of stations run by the Chinese Academy of Sciences.

Wang notes that flowers have rooted and grow in the area once covered with ice.

The research station that houses Wang and his team is outside Lijiang, a city of about 1.2 million people. The team uses special equipment to collect data on temperature, wind speed and rainfall. Other devices measure water flow in streams fed by melted ice. Cold temperatures, heavy rain, falling rocks, strong winds and glacier movement can damage the equipment. One recent morning the team had to replace a broken weather research station.

However, the difficult weather conditions will ensure Yunnan has plenty of freshwater. In other areas, glacier loss creates serious risk of a dry period across the Third Pole, Wang said.

The next day, the team had to wear special ice climbing footwear while repairing other research devices on the glacier.

Wang spoke9 of how the area had changed.

He said, “Where we’re at right now was back in 2008 all covered with ice. From here to there at the side, the glacier shrank about 20 to 30 meters.”

The team crossed streams and jumped across deep, narrow divides in the glacier. They were looking for some measuring equipment they had placed in the ice earlier. The equipment shows how much the glacier has moved and the amount it dropped in height over the summer.

One team member launched a camera drone over the Third Pole. The images it captured help tell a story of extreme loss: 25 percent of its ice and four of its 19 glaciers have disappeared since 1957.

Wang said such changes to the Baishui glacier provide the chance to educate visitors about global warming.

Last year, Yulong Snow Mountain park officials reported that 2.6 million visitors came to the mountain.

On a recent windy day, hundreds of visitors climbed wooden stairs to take pictures in front of the glacier.

One visitor named Hou Yugang said he was not too concerned about climate change and Baishui’s melting.

“I don’t think about it now because it still has a long way to go,” he said.

To protect the glacier, officials have limited the number of visitors to 10,000 a day and have banned hiking on the ice. China plans to create snow there and block streams to increase the amount of water in the air, which slows melting.

Security guard Yang Shaofeng is a member of the local Naxi minority community. It considers Jade Dragon Snow Mountain to be sacred. Yang says he remembers being able to see the glacier’s lowest edge from his home village. But that time has passed.

“Only when we climb up can we see it,” he said sadly.

I’m Ashley Thompson. And I’m Caty Weaver10.

Words in This Story

glacier – n. a very large area of ice that moves slowly down a slope or valley or over a wide area of land

region – n. a part of a country, of the world, etc., that is different or separate from other parts in some way

impact – n. a powerful or major influence or effec?t

province – n. any one of the large parts that some countries are divided into?

stream – n. a natural flow of water that is smaller than a river?

hike – v. to walk a long distance especially for pleasure or exercise: to go on a hike


点击收听单词发音收听单词发音  

1 glacier YeQzw     
n.冰川,冰河
参考例句:
  • The glacier calved a large iceberg.冰河崩解而形成一个大冰山。
  • The upper surface of glacier is riven by crevasses.冰川的上表面已裂成冰隙。
2 glaciers e815ddf266946d55974cdc5579cbd89b     
冰河,冰川( glacier的名词复数 )
参考例句:
  • Glaciers gouged out valleys from the hills. 冰川把丘陵地带冲出一条条山谷。
  • It has ice and snow glaciers, rainforests and beautiful mountains. 既有冰川,又有雨林和秀丽的山峰。 来自英语晨读30分(高一)
3 seasonal LZ1xE     
adj.季节的,季节性的
参考例句:
  • The town relies on the seasonal tourist industry for jobs.这个城镇依靠季节性旅游业提供就业机会。
  • The hors d'oeuvre is seasonal vegetables.餐前小吃是应时蔬菜。
4 economics grzxZ     
n.经济学,经济情况
参考例句:
  • He is studying economics,which subject is very important.他正在学习经济学,该学科是很重要的。
  • One can't separate politics from economics.不能把政治与经济割裂开来。
5 panel l4IzD     
n.面,板,专门小组,控制板,仪表盘
参考例句:
  • The unusual control panel on the walls caught our attention.墙上不同寻常的控制板引起了我们的注意。
  • The panel of judges included several well-known writers.评判小组中包括几位知名作家。
6 equator piJzt     
n.赤道,(平分球形物体的面的)圆
参考例句:
  • Singapore is near the equator.新加坡位于赤道附近。
  • The United States is north of the equator.美国位于赤道以北。
7 heightened bdaa72284643357b643087fb61fca19a     
(使)变高, (使)增大( heighten的过去式和过去分词 ); (使)提高; (使)加强[重]
参考例句:
  • Tension has heightened after the recent bomb attack. 最近的炸弹袭击之后,情势更加紧张。
  • The lively dance heightened the joyous atmosphere of the scene. 轻快的舞蹈给这场戏渲染了欢乐气氛。
8 jade i3Pxo     
n.玉石;碧玉;翡翠
参考例句:
  • The statue was carved out of jade.这座塑像是玉雕的。
  • He presented us with a couple of jade lions.他送给我们一对玉狮子。
9 spoke XryyC     
n.(车轮的)辐条;轮辐;破坏某人的计划;阻挠某人的行动 v.讲,谈(speak的过去式);说;演说;从某种观点来说
参考例句:
  • They sourced the spoke nuts from our company.他们的轮辐螺帽是从我们公司获得的。
  • The spokes of a wheel are the bars that connect the outer ring to the centre.辐条是轮子上连接外圈与中心的条棒。
10 weaver LgWwd     
n.织布工;编织者
参考例句:
  • She was a fast weaver and the cloth was very good.她织布织得很快,而且布的质量很好。
  • The eager weaver did not notice my confusion.热心的纺织工人没有注意到我的狼狈相。
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