60秒科学:Immigrant Dust Feeds Rain Forests

Immigrant Dust Feeds Rain Forests
Intercontinental dust helps fertilize¹ lush forests in the Western Hemisphere and Hawaii, noted² Oliver Chadwick of the University of California, Santa Barbara, at the annual meeting of the American Association for the Advancement³ of Science in San Diego on February 19th. Steve Mirsky reports

It’s long been known that nutrient-rich dust from Africa floats across the Atlantic to the Amazon. And it’s assumed that the dust fertilizes⁴ the rainforest. Oliver Chadwick from the University of California, Santa Barbara, says that Hawaii can also thank immigrant dust for its lush forests:

“Hawaii is one of the least dusty places in the world. It’s one of the most remote archipelagos in the world and receives very little dust. And yet, we’ve been able to demonstrate that the phosphorus that’s carried by the dust and deposited on the old landscapes in Kauai actually fertilizes the forest.”

Speaking February 19th at the annual meeting of the American Association for the Advancement of Science in San Diego, Chadwick noted that Puerto Rico also relies on African dust for fertilization. “Through the atmosphere, all parts of terrestrial ecosystems⁵, forests, grasslands⁶, are linked in a very effective way.”
 

1 fertilize   

v.使受精，施肥于，使肥沃

参考例句：

• Fertilizer is a substance put on land to fertilize it.肥料是施在地里使之肥沃的物质。
• Reading will fertilize his vocabulary.阅读会丰富他的词汇。

2 noted   

adj.著名的，知名的

参考例句：

• The local hotel is noted for its good table.当地的那家酒店以餐食精美而著称。
• Jim is noted for arriving late for work.吉姆上班迟到出了名。

3 advancement   

n.前进，促进，提升

参考例句：

• His new contribution to the advancement of physiology was well appreciated.他对生理学发展的新贡献获得高度赞赏。
• The aim of a university should be the advancement of learning.大学的目标应是促进学术。

4 fertilizes   

n.施肥( fertilize的名词复数 )v.施肥( fertilize的第三人称单数 )

参考例句：

• The male sperm fertilizes the female egg. 雄性的精子使雌性的卵子受精。 来自辞典例句
• When the male reproductive cell fertilizes the female reproductive cell a zygote is formed. 当男性生殖细胞与女性生殖细胞发生受精时，就形成了一个合子。 来自辞典例句

5 ecosystems   

n.生态系统( ecosystem的名词复数 )

参考例句：

• There are highly sensitive and delicately balanced ecosystems in the forest. 森林里有高度敏感、灵敏平衡的各种生态系统。 来自《简明英汉词典》
• Madagascar's ecosystems range from rainforest to semi-desert. 马达加斯加生态系统类型多样，从雨林到半荒漠等不一而足。 来自辞典例句

6 grasslands   

n.草原，牧场( grassland的名词复数 )

参考例句：

• Songs were heard ringing loud and clear over the grasslands. 草原上扬起清亮激越的歌声。 来自《现代汉英综合大词典》
• Grasslands have been broken and planted to wheat. 草原已经开垦出来，种上了小麦。 来自《简明英汉词典》