Global S&T Development Trend Analysis Platform of Resources and Environment
Dust on the wind: Study reveals surprising role of dust in mountain ecosystems | |
admin | |
2017-12-06 | |
发布年 | 2017 |
语种 | 英语 |
国家 | 美国 |
领域 | 气候变化 ; 地球科学 ; 资源环境 |
正文(英文) |
Find related stories on NSF's Critical Zone Observatories at this link. Trees growing atop granite in the southern Sierra Nevada Mountains rely on nutrients from windborne dust more than on nutrients from the underlying bedrock. This surprising finding resulted from a study led by University of Wyoming (UW) scientists. The research was funded by the National Science Foundation (NSF). A paper reporting the results is published today in the journal Science Advances. Lindsay Arvin of UW is the paper's lead author and co-authors are Cliff Riebe of UW, Sarah Aciego of UW and the University of Michigan (U-M), and Molly Blakowski of U-M. Arvin, Riebe and colleagues took samples of live pine needles in the Sierra Nevada Mountains. They used two biochemical "fingerprints" in the pine needles to trace the nutrients. "Dust has one fingerprint and bedrock another," Riebe said. "The pine needles showed the degree of mixing of the two." The results suggest that dust-derived nutrients can be vital to mountain ecosystems, even when nutrient supply from bedrock is substantial. Riebe said that after making the initial findings, the team then took two datasets -- a global database of erosion rates and a global model of dust inputs -- to look at the effects of dust on nutrients in mountain ecosystems worldwide. The analysis demonstrates that dust can provide a large fraction of a mountain ecosystem's nutrients. "This combination of datasets allowed us to see where dust is important in the world," Riebe said. "One surprising finding is that it may be more critical than previously thought in a lot of places, such as the Appalachian Mountains and Western Europe." The concept of Earth's "critical zone" -- the swath from the top of the tree canopy down to bedrock -- gives scientists the framework to look at the environment from a larger perspective, said Richard Yuretich, program director for NSF's Critical Zone Observatories Program, which funded the study. "Researchers can see the global influence of what were thought to be regional processes," said Yuretich." This study shows that dust transported around the world in the atmosphere is an important source of nutrients for plants, even where its contribution isn't obvious. Earth maintains its balance, often in surprising ways." -NSF- |
URL | 查看原文 |
来源平台 | US National Scientific Foundation (NSF) |
文献类型 | 新闻 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/125715 |
专题 | 气候变化 地球科学 资源环境科学 |
推荐引用方式 GB/T 7714 | admin. Dust on the wind: Study reveals surprising role of dust in mountain ecosystems. 2017. |
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