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VOA科学技术2024--Severe Drought Returns to the Amazon Earlier Than Expected

时间:2024-08-19 09:11:08

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The Amazon Basin is facing one of the most severe droughts in recent years, the Amazon Cooperation Treaty Organization (or ACTO) said.

As the dry season begins in August, many of its rivers are already at very low levels. And several South American countries are preparing to deal with increasing forest fires, water shortages2 and higher food prices.

In several rivers in the southwestern Amazon, water levels are the lowest on record for this time of year. August and September are usually the driest months. That is also when most fires happen. The ACTO says the most affected3 countries so far this year are Bolivia, Peru and Brazil.

Recently, Brazil's federal water agency declared a water shortage1 in two major basins, Madeira and Purus. Together, they cover an area nearly the size of Mexico. And in Brazil's Acre state, the drought has already caused water shortages in the city of Rio Branco. In June, neighboring Amazonas state declared a water shortage in 20 of its communities.

The declared shortages came more than two months earlier than last year when most of the Amazon Basin suffered its worst drought on record.

The 2023 drought isolated5 people who depend on water for transportation. Smoke from forest fires made the air in cities unhealthy to breathe. And high water temperatures killed more than 100 river dolphins.

The Madeira River is one of the largest rivers in the Basin. It is also an important waterway for soybeans and fuel. The river's level dropped below three meters near Porto Velho on July 20. In 2023, that happened nearly a month later on August 15.

The low water level means fewer boats could travel the river at night. And two of Brazil's largest hydroelectric plants may halt production, as happened last year.

In the Amazonas town of Envira, nearby rivers have become too shallow to travel by boat. Local officials have asked old people and pregnant6 women to move from communities by the river to the city center. This is because medical help may not be able to reach them.

The low water is also affecting food prices. Farmers who produce cassava flour cannot get it to market. As a result, this important Amazon food has more than doubled in price, local government says.

Another worry is fire. There were around 25,000 fires from January until late July - the highest number for this period in almost twenty years. In the Amazon, fires are mostly human-made. People use the fires to manage fields and clear areas where trees have been cut down.

Drought is not the only weather event affecting areas in Brazil's Acre state. Severe flooding hit 19 of the state's 22 communities last year.

"It's been two years in a row of extreme events," said Julie Messias, Acre's secretary of environment. She added, "The result is that we are facing a threat of food shortage. First, the crops were flooded, and now the planting period is very dry."

The Amazon is the world's largest river system, carrying 20 percent of the world's river water into the oceans each year.

Words in This Story

basin -n. the land around a river and the area from which water flows into it

drought -n. an extended period of very dry weather

isolate4 -v. to keep physically7 separated and away from other people or things

shallow -adj. not deep

in a row -prep. phrase consecutively


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1 shortage 1yrwh     
n.缺少,缺乏,不足
参考例句:
  • The city is suffering a desperate shortage of water.这个城市严重缺水。
  • The heart of the problem is a shortage of funds.问题的关键是缺乏经费。
2 shortages f09a7486187a5c082c18856f7aa1adb5     
n.不足( shortage的名词复数 );缺少;缺少量;不足额
参考例句:
  • Food shortages often occur in time of war. 在战争期间常常发生粮食短缺的情形。 来自《现代汉英综合大词典》
  • At the same time, worldwide food and fuel shortages eased. 同时,世界性粮食和石油短缺的现象终止了。 来自英汉非文学 - 政府文件
3 affected TzUzg0     
adj.不自然的,假装的
参考例句:
  • She showed an affected interest in our subject.她假装对我们的课题感到兴趣。
  • His manners are affected.他的态度不自然。
4 isolate G3Exu     
vt.使孤立,隔离
参考例句:
  • Do not isolate yourself from others.不要把自己孤立起来。
  • We should never isolate ourselves from the masses.我们永远不能脱离群众。
5 isolated bqmzTd     
adj.与世隔绝的
参考例句:
  • His bad behaviour was just an isolated incident. 他的不良行为只是个别事件。
  • Patients with the disease should be isolated. 这种病的患者应予以隔离。
6 pregnant IP3xP     
adj.怀孕的,怀胎的
参考例句:
  • She is a pregnant woman.她是一名孕妇。
  • She is pregnant with her first child.她怀了第一胎。
7 physically iNix5     
adj.物质上,体格上,身体上,按自然规律
参考例句:
  • He was out of sorts physically,as well as disordered mentally.他浑身不舒服,心绪也很乱。
  • Every time I think about it I feel physically sick.一想起那件事我就感到极恶心。

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