Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.5194/soil-7-305-2021 |
| Continental-scale controls on soil organic carbon across sub-Saharan Africa | |
| von Fromm, Sophie F.; Hoyt, Alison M.; Lange, Markus; Acquah, Gifty E.; Aynekulu, Ermias; Berhe, Asmeret Asefaw; Haefele, Stephan M.; McGrath, Steve P.; Shepherd, Keith D.; Sila, Andrew M.; Six, Johan; Towett, Erick K.; Trumbore, Susan E.; Vagen, Tor-G; Weullow, Elvis; Winowiecki, Leigh A.; Doetterl, Sebastian | |
| 通讯作者 | von Fromm, SF (corresponding author), Max Planck Inst Biogeochem, Dept Biogeochem Proc, Jena, Germany. ; von Fromm, SF (corresponding author), Swiss Fed Inst Technol, Dept Environm Syst Sci, Zurich, Switzerland. |
| 来源期刊 | SOIL
 |
| ISSN | 2199-3971 |
| EISSN | 2199-398X |
| 出版年 | 2021 |
| 卷号 | 7期号:1页码:305-332 |
| 英文摘要 | Soil organic carbon (SOC) stabilization and destabilization has been studied intensively. Yet, the factors which control SOC content across scales remain unclear. Earlier studies demonstrated that soil texture and geochemistry strongly affect SOC content. However, those findings primarily rely on data from temperate regions where soil mineralogy, weathering status and climatic conditions generally differ from tropical and subtropical regions. We investigated soil properties and climate variables influencing SOC concentrations across sub-Saharan Africa. A total of 1601 samples were analyzed, collected from two depths (0-20 and 20-50 cm) from 17 countries as part of the Africa Soil Information Service project (AfSIS). The data set spans arid to humid climates and includes soils with a wide range of pH values, weathering status, soil texture, exchangeable cations, extractable metals and land cover types. The most important SOC predictors were identified by linear mixed-effects models, regression trees and random forest models. Our results indicate that geochemical properties, mainly oxalate-extractable metals (Al and Fe) and exchangeable Ca, are equally important compared to climatic variables (mean annual temperature and aridity index). Together, they explain approximately two-thirds of SOC variation across sub-Saharan Africa. Oxalate-extractable metals were most important in wet regions with acidic and highly weathered soils, whereas exchangeable Ca was more important in alkaline and less weathered soils in drier regions. In contrast, land cover and soil texture were not significant SOC predictors on this large scale. Our findings indicate that key factors controlling SOC across sub-Saharan Africa are broadly similar to those in temperate regions, despite differences in soil development history. |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | Green Submitted, Green Published, gold |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000669513300001 |
| WOS关键词 | PARTICLE-SIZE FRACTIONS ; TROPICAL SOILS ; LAND-COVER ; R PACKAGE ; MATTER ; CLIMATE ; STORAGE ; STABILIZATION ; DYNAMICS ; CALCIUM |
| WOS类目 | Soil Science |
| WOS研究方向 | Agriculture |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/367885 |
| 作者单位 | [von Fromm, Sophie F.; Hoyt, Alison M.; Lange, Markus; Trumbore, Susan E.] Max Planck Inst Biogeochem, Dept Biogeochem Proc, Jena, Germany; [von Fromm, Sophie F.; Six, Johan; Doetterl, Sebastian] Swiss Fed Inst Technol, Dept Environm Syst Sci, Zurich, Switzerland; [Hoyt, Alison M.] Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA USA; [Acquah, Gifty E.; Haefele, Stephan M.; McGrath, Steve P.] Rothamsted Res, Dept Sustainable Agr Sci, Harpenden, Herts, England; [Aynekulu, Ermias; Shepherd, Keith D.; Sila, Andrew M.; Towett, Erick K.; Vagen, Tor-G; Weullow, Elvis; Winowiecki, Leigh A.] World Agroforestry Ctr ICRAF, Nairobi, Kenya; [Berhe, Asmeret Asefaw] Univ Calif Merced, Dept Live & Environm Sci, Merced, CA USA |
| 推荐引用方式 GB/T 7714 | von Fromm, Sophie F.,Hoyt, Alison M.,Lange, Markus,et al. Continental-scale controls on soil organic carbon across sub-Saharan Africa[J],2021,7(1):305-332. |
| APA | von Fromm, Sophie F..,Hoyt, Alison M..,Lange, Markus.,Acquah, Gifty E..,Aynekulu, Ermias.,...&Doetterl, Sebastian.(2021).Continental-scale controls on soil organic carbon across sub-Saharan Africa.SOIL,7(1),305-332. |
| MLA | von Fromm, Sophie F.,et al."Continental-scale controls on soil organic carbon across sub-Saharan Africa".SOIL 7.1(2021):305-332. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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。
