Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41561-019-0373-z |
Continental-scale soil carbon composition and vulnerability modulated by regional environmental controls | |
Rossel, R. A. Viscarra1,2; Lee, J.1,2; Behrens, T.3; Luo, Z.4; Baldock, J.5; Richards, A.6 | |
2019-07-01 | |
发表期刊 | NATURE GEOSCIENCE |
ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2019 |
卷号 | 12期号:7页码:547-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Australia; Germany |
英文摘要 | Soil organic carbon (C) is an essential component of the global C cycle. Processes that control its composition and dynamics over large scales are not well understood. Thus, our understanding of C cycling is incomplete, which makes it difficult to predict C gains and losses due to changes in climate, land use and management. Here we show that controls on the composition of organic C, the particulate, humus and resistant fractions, and the potential vulnerability of C to decomposition across Australia are distinct, scale-dependent and variable. We used machine-learning with 5,721 topsoil measurements to show that, continentally, the climate, soil properties (for example, total nitrogen and pH) and elevation are dominant controls. However, we found that such general assessments disregard underlying region-specific controls that affect the distribution of the organic C fractions and vulnerability. This can lead to misinterpretations that prejudice our understanding of soil C processes and dynamics. Regionally, climate is mediated through interactions with soil properties, mineralogy and topography. In some regions, climate is uninfluential. These results highlight the need for regional assessments of soil C dynamics and more local parameterization of biogeochemical and Earth system models. Our analysis propounds the development of region-specific strategies for effective C management and climate change mitigation. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000473104300012 |
WOS关键词 | C-13 NMR-SPECTRA ; ORGANIC-CARBON ; DETERMINING QUANTITATION ; AUSTRALIAN SOIL ; MATTER ; MODEL ; CLIMATE ; STABILIZATION ; MECHANISMS ; FRACTIONS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/184807 |
专题 | 地球科学 气候变化 |
作者单位 | 1.Curtin Univ, Fac Sci & Engn, Sch Mol & Life Sci, Perth, WA, Australia; 2.CSIRO Land & Water, Canberra, ACT, Australia; 3.Eberhard Karls Univ Tubingen, Cluster Excellence Machine Learning New Perspect, Tubingen, Germany; 4.CSIRO Agr & Food, Canberra, ACT, Australia; 5.CSIRO Agr & Food, Glen Osmond, SA, Australia; 6.CSIRO Land & Water, Winnellie, NT, Australia |
推荐引用方式 GB/T 7714 | Rossel, R. A. Viscarra,Lee, J.,Behrens, T.,et al. Continental-scale soil carbon composition and vulnerability modulated by regional environmental controls[J]. NATURE GEOSCIENCE,2019,12(7):547-+. |
APA | Rossel, R. A. Viscarra,Lee, J.,Behrens, T.,Luo, Z.,Baldock, J.,&Richards, A..(2019).Continental-scale soil carbon composition and vulnerability modulated by regional environmental controls.NATURE GEOSCIENCE,12(7),547-+. |
MLA | Rossel, R. A. Viscarra,et al."Continental-scale soil carbon composition and vulnerability modulated by regional environmental controls".NATURE GEOSCIENCE 12.7(2019):547-+. |
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。
修改评论