Modelling soil carbon fractions with visible near-infrared (VNIR) and mid-infrared (MIR) spectroscopy

Geoderma ◽  
2015 ◽  
Vol 239-240 ◽  
pp. 229-239 ◽  
Author(s):  
N.M. Knox ◽  
S. Grunwald ◽  
M.L. McDowell ◽  
G.L. Bruland ◽  
D.B. Myers ◽  
...  
Keyword(s):  
Soil Carbon ◽  
Near Infrared ◽  
Mid Infrared ◽  
Carbon Fractions ◽  
Mir Spectroscopy ◽  
Soil Carbon Fractions

Soil organic carbon dynamics jointly controlled by climate, carbon inputs, soil properties and soil carbon fractions

2017 ◽  
Vol 23 (10) ◽  
pp. 4430-4439 ◽  
Author(s):  
Zhongkui Luo ◽  
Wenting Feng ◽  
Yiqi Luo ◽  
Jeff Baldock ◽  
Enli Wang
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Properties ◽  
Soil Carbon ◽  
Carbon Dynamics ◽  
Carbon Fractions ◽  
Soil Organic Carbon Dynamics ◽  
Soil Carbon Fractions

scholarly journals Can Agricultural Management Induced Changes in Soil Organic Carbon Be Detected Using Mid-Infrared Spectroscopy?

2021 ◽  
Vol 13 (12) ◽  
pp. 2265
Author(s):  
Jonathan Sanderman ◽  
Kathleen Savage ◽  
Shree Dangal ◽  
Gabriel Duran ◽  
Charlotte Rivard ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Carbon ◽  
Diffuse Reflectance Spectroscopy ◽  
Low Cost ◽  
Soil Survey ◽  
Mid Infrared ◽  
Mir Spectroscopy ◽  
Induced Changes ◽  
Carbon Change

A major limitation to building credible soil carbon sequestration programs is the cost of measuring soil carbon change. Diffuse reflectance spectroscopy (DRS) is considered a viable low-cost alternative to traditional laboratory analysis of soil organic carbon (SOC). While numerous studies have shown that DRS can produce accurate and precise estimates of SOC across landscapes, whether DRS can detect subtle management induced changes in SOC at a given site has not been resolved. Here, we leverage archived soil samples from seven long-term research trials in the U.S. to test this question using mid infrared (MIR) spectroscopy coupled with the USDA-NRCS Kellogg Soil Survey Laboratory MIR spectral library. Overall, MIR-based estimates of SOC%, with samples scanned on a secondary instrument, were excellent with the root mean square error ranging from 0.10 to 0.33% across the seven sites. In all but two instances, the same statistically significant (p < 0.10) management effect was found using both the lab-based SOC% and MIR estimated SOC% data. Despite some additional uncertainty, primarily in the form of bias, these results suggest that large existing MIR spectral libraries can be operationalized in other laboratories for successful carbon monitoring.

Effect of land use on soil carbon fractions

2020 ◽  
Vol 68 (4) ◽  
pp. 392-399
Author(s):  
D. Pal ◽  
P.K. Patra ◽  
D. Deb ◽  
R. Bhattacharyya ◽  
D. Mukhopadhyay
Keyword(s):  
Land Use ◽  
Soil Carbon ◽  
Carbon Fractions ◽  
Soil Carbon Fractions

scholarly journals Sensitivity of soil carbon fractions and their specific stabilization mechanisms to extreme soil warming in a subarctic grassland

2016 ◽  
Vol 23 (3) ◽  
pp. 1316-1327 ◽  
Author(s):  
Christopher Poeplau ◽  
Thomas Kätterer ◽  
Niki I. W. Leblans ◽  
Bjarni D. Sigurdsson
Keyword(s):  
Soil Carbon ◽  
Soil Warming ◽  
Carbon Fractions ◽  
Soil Carbon Fractions

scholarly journals Responses of Carbon Dynamics to Nitrogen Deposition in Typical Freshwater Wetland of Sanjiang Plain

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yang Wang ◽  
Jingshuang Liu ◽  
Longxue He ◽  
Jingxin Dou ◽  
Hongmei Zhao
Keyword(s):  
Soil Carbon ◽  
Nitrogen Deposition ◽  
Carbon Dynamics ◽  
N Deposition ◽  
Sanjiang Plain ◽  
Carbon Accumulation ◽  
Total Biomass ◽  
Soil System ◽  
Carbon Fractions ◽  
Soil Carbon Fractions

The effects of nitrogen deposition (N-deposition) on the carbon dynamics in typicalCalamagrostis angustifoliawetland of Sanjiang Plain were studied by a pot-culture experiment during two continuous plant growing seasons. Elevated atmospheric N-deposition caused significant increases in the aboveground net primary production and root biomass; moreover, a preferential partition of carbon to root was also observed. Different soil carbon fractions gained due to elevated N-deposition and their response intensities followed the sequence of labile carbon > dissolved organic carbon > microbial biomass carbon, and the interaction between N-deposition and flooded condition facilitated the release of different carbon fractions. Positive correlations were found between CO2and CH4fluxes and liable carbon contents with N-deposition, and flooded condition also tended to facilitate CH4fluxes and to inhibit the CO2fluxes with N-deposition. The increases in soil carbon fractions occurring in the nitrogen treatments were significantly correlated with increases in root, aboveground parts, total biomass, and their carbon uptake. Our results suggested that N-deposition could enhance the contents of active carbon fractions in soil system and carbon accumulation in plant of the freshwater wetlands.

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