Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1080/02723646.2021.1919379 |
| Assessing biological soil crusts as agents of Ca-Mg silicate dissolution and CO2 sequestration | |
| Dorn, Ronald, I | |
| 通讯作者 | Dorn, RI (corresponding author), Arizona State Univ, Urban Planning, Sch Geog Sci, Tempe, AZ 85281 USA. |
| 来源期刊 | PHYSICAL GEOGRAPHY
 |
| ISSN | 0272-3646 |
| EISSN | 1930-0557 |
| 出版年 | 2021-05 |
| 英文摘要 | Biological soil crusts (BSCs) monitored over a 25-year period enhance the dissolution of the Ca-silicate plagioclase and the Mg-silicate olivine at Sonoran Desert and Colorado Plateau, USA, study sites. This first measured biological enhancement of weathering (BEW) for plagioclase is a mean of 2.3 +/- 0.4 and 3.0 +/- 0.4 for the Organic Pipe, Arizona and Moab, Utah study sites; and it is 4.9 +/- 0.8 and 3.9 +/- 0.3 for olivine at these respective sites. These BEWs are low compared to other biological agents such as lichens, tree roots, termites and especially ants. If these modern BEW for BCSs reflect the magnitude of BEW in Archean soil crusts, then the presence of abundant BSCs covering an Archean Earth surface would not contradict available evidence for no substantial atmospheric CO2 decline in Earth's early atmosphere. The relatively low BEW value for BCSs indicates that BSCs would not be a useful geoengineering solution to high levels of atmospheric carbon dioxide. |
| 英文关键词 | carbon dioxide drawdown Earth’ s habitability faint sun hypothesis in situ weathering |
| 类型 | Article ; Early Access |
| 语种 | 英语 |
| 开放获取类型 | hybrid |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000647000600001 |
| WOS关键词 | BIOTIC ENHANCEMENT ; WEATHERING RATES ; DIVERSITY ; ULTRAVIOLET ; PLANTS ; ROCKS ; FIELD |
| WOS类目 | Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography ; Geology ; Meteorology & Atmospheric Sciences |
| 来源机构 | Arizona State University |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/352420 |
| 作者单位 | [Dorn, Ronald, I] Arizona State Univ, Urban Planning, Sch Geog Sci, Tempe, AZ 85281 USA |
| 推荐引用方式 GB/T 7714 | Dorn, Ronald, I. Assessing biological soil crusts as agents of Ca-Mg silicate dissolution and CO2 sequestration[J]. Arizona State University,2021. |
| APA | Dorn, Ronald, I.(2021).Assessing biological soil crusts as agents of Ca-Mg silicate dissolution and CO2 sequestration.PHYSICAL GEOGRAPHY. |
| MLA | Dorn, Ronald, I."Assessing biological soil crusts as agents of Ca-Mg silicate dissolution and CO2 sequestration".PHYSICAL GEOGRAPHY (2021). |
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