干旱区生态环境知识资源中心(Arid): Soil organic carbon fractions in the Great Plains of the United States: an application of mid-infrared spectroscopy

Arid

DOI	10.1007/s10533-021-00755-1
	Soil organic carbon fractions in the Great Plains of the United States: an application of mid-infrared spectroscopy
	Sanderman, Jonathan; Baldock, Jeffrey A.; Dangal, Shree R. S.; Ludwig, Sarah; Potter, Stefano; Rivard, Charlotte; Savage, Kathleen
通讯作者	Sanderman, J (corresponding author), Woodwell Climate Res Ctr, 149 Woods Hole Rd, Falmouth, MA 02540 USA.
来源期刊	BIOGEOCHEMISTRY
ISSN	0168-2563
EISSN	1573-515X
出版年	2021
英文摘要	Spectroscopy is a powerful means of increasing the availability of soil data necessary for understanding carbon cycling in a changing world. Here, we develop a calibration transfer methodology to appropriately apply an existing mid infrared (MIR) spectral library with analyte data on the distribution of soil organic carbon (SOC) into particulate (POC), mineral-associated (MAOC), and pyrogenic (PyC) forms to nearly 8000 soil samples collected in the Great Plains ecoregion of the United States. We then use this SOC fraction database in combination with a machine learning-based predictive soil mapping approach to explore the controls on the distribution of fractions through soil profiles and across the region. The relative abundance of each fraction had unique depth distribution profiles with POC fraction dropping exponentially with depth, the MAOC fraction having a broad distribution with a maxima at 35-50 cm, and the PyC fraction showed a slight subsurface maxima (10-20 cm) and then a steady decline with increasing depth. Within the Great Plains ecoregion, clay content was a strong control on the total amount and relative proportion of each fraction in both the surface and subsoil horizons. Sandy soils and soils in cool semi-arid regions contained significantly more POC relative to the MAOC and PyC fractions. Cultivated soils had significantly less SOC than grassland soils with losses following a predictable pattern: POC > MAOC PyC. This SOC fraction database and resulting maps can now form the basis for improved representation of SOC dynamics in biogeochemical models.
英文关键词	Particulate carbon Pyrogenic carbon Mineral stabilization Chemometrics Carbon cycling Predictive soil mapping
类型	Article ; Early Access
语种	英语
开放获取类型	Other Gold
收录类别	SCI-E
WOS记录号	WOS:000613983100001
WOS关键词	EARTH SYSTEM MODELS ; BLACK CARBON ; BIOCHAR APPLICATION ; SPECTRAL LIBRARIES ; MATTER FRACTIONS ; TEMPERATE SOILS ; STABILIZATION ; DYNAMICS ; STOCKS ; STANDARDIZATION
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
来源机构	Commonwealth Scientific and Industrial Research Organisation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352087
作者单位	[Sanderman, Jonathan; Dangal, Shree R. S.; Ludwig, Sarah; Potter, Stefano; Rivard, Charlotte; Savage, Kathleen] Woodwell Climate Res Ctr, 149 Woods Hole Rd, Falmouth, MA 02540 USA; [Baldock, Jeffrey A.] CSIRO Food & Agr, Waite Campus, Urrbrae, SA 5064, Australia; [Ludwig, Sarah] Columbia Univ, New York, NY USA
推荐引用方式 GB/T 7714	Sanderman, Jonathan,Baldock, Jeffrey A.,Dangal, Shree R. S.,et al. Soil organic carbon fractions in the Great Plains of the United States: an application of mid-infrared spectroscopy[J]. Commonwealth Scientific and Industrial Research Organisation,2021.
APA	Sanderman, Jonathan.,Baldock, Jeffrey A..,Dangal, Shree R. S..,Ludwig, Sarah.,Potter, Stefano.,...&Savage, Kathleen.(2021).Soil organic carbon fractions in the Great Plains of the United States: an application of mid-infrared spectroscopy.BIOGEOCHEMISTRY.
MLA	Sanderman, Jonathan,et al."Soil organic carbon fractions in the Great Plains of the United States: an application of mid-infrared spectroscopy".BIOGEOCHEMISTRY (2021).