Global S&T Development Trend Analysis Platform of Resources and Environment
Saharan Dust Reaching Amazon Quantified | |
admin | |
2020-09-17 | |
发布年 | 2020 |
语种 | 英语 |
国家 | 美国 |
领域 | 气候变化 |
正文(英文) | A new study by researchers at the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science and ATMO Guyane quantified the amount of Saharan dust reaching the Amazon to better understand how dust could impact soil fertility in the region. Intense tropical weathering and local biomass burning have both contributed to nutrient-poor soil in the Amazon Basin. The research team analyzed 15 years of daily measurements of African dust transported in trade winds and collected at a coastal research station in Cayenne, French Guiana. The results showed that significant quantities of dust reach the heart of the Amazon Basin and are deposited there. "African dust provides an important source of nutrients to enhance Amazonian soil fertility," said Joseph Prospero, professor emeritus at the UM Rosenstiel School and lead author of the study. Every year, mineral-rich dust from North Africa's Sahara Desert is lifted into the atmosphere by winds and carried on a 5,000-mile journey across the North Atlantic to the Americas. African dust contains phosphorus and other important plant nutrients that help offset soil losses and increase Amazonian soil fertility. This study, the first to quantify African dust transport to South America, showed that significant amounts of dust is deposited to the Amazon. The analysis also found that previous studies, which were based on limited measurements of dust, may have greatly overestimated the impact. The Amazon Basin plays a major role in global climate. Trees and plants in the Amazon remove huge quantities of carbon dioxide from the atmosphere and store the carbon in vegetation. This removal offsets some of the human-made CO2 emitted into the atmosphere and mitigates the impact of CO2 on global climate. The scientists also found that quantities of dust transported to South America are inversely linked to rainfall in North Africa and concluded that climate change will affect dust transport to South America. "Changes in dust transport could affect plant growth in the Amazon and the amount of CO2 drawn from the atmosphere. This, in turn, would further impact climate," said Prospero. "Our results highlight the need for long-term monitoring to identify changes that might occur to Africa dust transport from climate change."
make a difference: sponsored opportunity
Story Source: Materials provided by University of Miami Rosenstiel School of Marine & Atmospheric Science. Original written by Diana Udel. Note: Content may be edited for style and length. Journal Reference:
Cite This Page: University of Miami Rosenstiel School of Marine & Atmospheric Science. "Saharan dust reaching Amazon quantified: UM Rosenstiel School-led study has important implications for soil fertility in Amazon Basin." ScienceDaily. ScienceDaily, 17 September 2020.
University of Miami Rosenstiel School of Marine & Atmospheric Science. (2020, September 17). Saharan dust reaching Amazon quantified: UM Rosenstiel School-led study has important implications for soil fertility in Amazon Basin. ScienceDaily. Retrieved September 17, 2020 from www.sciencedaily.com/releases/2020/09/200917105358.htm
University of Miami Rosenstiel School of Marine & Atmospheric Science. "Saharan dust reaching Amazon quantified: UM Rosenstiel School-led study has important implications for soil fertility in Amazon Basin." ScienceDaily. www.sciencedaily.com/releases/2020/09/200917105358.htm (accessed September 17, 2020).
|
URL | 查看原文 |
来源平台 | Science Daily |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/294491 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | admin. Saharan Dust Reaching Amazon Quantified. 2020. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[admin]的文章 |
百度学术 |
百度学术中相似的文章 |
[admin]的文章 |
必应学术 |
必应学术中相似的文章 |
[admin]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论