官方APP下载:英语全能特训(微信小程序版,支持苹果手机、安卓手机)
创办于2003年
UNSV记不住?那就记中文谐音“忧安思危”吧!
  Slow and Steady Wins the Race!
UNSV英语学习频道 - Slow and steady wins the race!
英语全能特训(微信小程序)
UNSV英语学习频道淘宝网店
客服短信:18913948480
客服邮箱:web@unsv.com
初级VIP会员
全站英语学习资料下载。
¥98元/12个月

DEVELOPMENT REPORT - Tree-Growing Campaign Makes for a Greener Niger

阅读次数:


VIP会员专享下载:(非VIP会员无权下载!如果想下载,但还不是VIP会员,请点此订购
下载方式:使用鼠标右键(注意是鼠标右键!)点击下面的MP3音频/MP4视频链接,然后选择“另存为…”。
MP3节目录音 MP3节目录音  PDF节目文稿 PDF节目文稿 
文章正文
同步字幕

This is the VOA Special English Development Report.

The Sahel is the area of Africa that lies between the Sahara desert to the north and more fertile land to the south. The dry plains of the Sahel are mostly treeless. Yet in Niger, one of the nations along the Sahel, millions of trees are now growing.

Researchers have been studying the progress of a re-greening campaign in Niger. Chris Reij is a scientist from the Netherlands. In a message at frameweb.org last February, he described how, in some places, "densities are so high that you almost look at a wall of trees."

A United Nations news service reported in October that Niger's government said the campaign had already reclaimed three million hectares. Teams of workers have used simple methods such as planting trees and protecting natural vegetation to save land from being lost to desert.

Ten to twenty times more trees were reported in parts of southern Niger in two thousand five than there were thirty years earlier.

Some reclaimed land can now be farmed again. The land became infertile during the nineteen seventies and early eighties. But about twenty years ago, local farmers recognized that their once-productive soil was being carried away by severe winds.

Farmers plow their land in Niger
Farmers plow their land in Niger

Trees were traditionally cut down for firewood or cleared for agriculture. Instead of clearing trees, farmers began to let them grow among their crops. At the same time, rainfall levels began to rise after a long dry period. Today, the rate of desert expansion in Niger is dropping and the amount of harvested crops is up.

All this was described earlier this month in the New York Times.

Niger is one of the world's poorest countries and its population is growing quickly. Being able to grow more food is important. The trees hold soil in place. They also help keep the ground from getting too dry. And they offer the possibility of extra money from selling branches, leaves and fruit.

Most of the trees are a kind of acacia that people in Niger call the gao tree. The trees are being grown mostly in densely populated areas. As the Times noted, this goes against the traditional thinking that population growth means a loss of trees and destruction of land.

The success of the effort also suggests that earlier damage to the Sahel may not have been permanent. And some say it could put Niger in a better position to deal with whatever effects climate change might bring.

And that's the VOA Special English Development Report, written by Jill Moss. I'm _________.

网友的学习评论(0条):
版权所有©2003-2019 南京通享科技有限公司,保留所有权利。未经书面许可,严禁转载本站内容,违者追究法律责任。 互联网经营ICP证:苏B2-20120186
网站备案:苏ICP备05000269号-1中国工业和信息化部网站备案查询
广播台