Soil organic-carbon dynamics after 80 years of cropping a Dark Brown Chernozem

1993 ◽  
Vol 73 (1) ◽  
pp. 133-136 ◽  
Author(s):  
C. M. Monreal ◽  
H. H. Janzen
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Temporal Change ◽  
Soil Samples ◽  
Crop Rotations ◽  
Surface Samples ◽  
Soil Organic Carbon Dynamics ◽  
Over Time ◽  
Dry Combustion

The temporal change of soil organic-carbon (Corg) was studied in soil samples taken from long-term crop rotations at Lethbridge. Between 1910 and 1990, net Corg losses for the 0–15 cm depth varied between 23% under fallow–wheat (FW) and 21% under fallow–wheat–wheat (FWW) and 17% under continuous wheat (W). Analysis of variance and an LSD test indicated that in 1990 the surface Corg concentrations were similar among all crop rotations. Corg in the 15–30 cm depth decreased over time and was significantly lower than in surface samples. Key words: Organic carbon, dry combustion, cold-wet dichromate digestion

Soil organic carbon dynamics under long-term sugarcane monoculture

Soil Research ◽  
1999 ◽  
Vol 37 (1) ◽  
pp. 151 ◽  
Author(s):  
J. O. Skjemstad ◽  
J. A. Taylor ◽  
L. J. Janik ◽  
S. P. Marvanek
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Organic Matter ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Samples ◽  
Resonance Spectroscopy ◽  
13C Nuclear Magnetic Resonance ◽  
Potential Impact ◽  
Soil Organic Carbon Dynamics

Comparisons of soil samples from virgin sites or sites recently planted to sugarcane (new) with sites that had been under cane production for many years (old) were made to investigate the potential impact of cane production on soil organic carbon (OC) levels and chemistry. The comparisons showed that very little change had occurred in total OC and in ‘light’ fraction (<1·6 Mg/m3). Increasing pyrophosphate extractability throughout the profile at some sites, as a result of cultivation, however, suggested that the organic matter generally became more ‘humified’ with long-term cane production. Evidence is presented for a redistribution of OC within profiles under cane production. Old, well-established cane sites had soils with lower OC levels in the surface horizons and higher levels in the subsoils relative to new sites. The overall chemistry of the soil organic matter, as indicated by solid state 13C nuclear magnetic resonance spectroscopy, did not change significantly at each site even though between site differences were large. Some soils contained substantial amounts of charcoal which was of pre-cane origin. In some of the coarse-textured soils, smaller amounts of charcoal produced during the burning of cane appeared to accumulate below the A1 horizons in the profiles. It also appeared likely that the redistribution of carbon in the upper horizons of some soils resulted from the movement of charcoal within the profile, probably as a result of tillage.

Modelling long-term soil organic carbon dynamics under the impact of land cover change and soil redistribution

CATENA ◽  
2017 ◽  
Vol 151 ◽  
pp. 63-73 ◽  
Author(s):  
Samuel Bouchoms ◽  
Zhengang Wang ◽  
Veerle Vanacker ◽  
Sebastian Doetterl ◽  
Kristof Van Oost
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Land Cover ◽  
Land Cover Change ◽  
Carbon Dynamics ◽  
Soil Redistribution ◽  
The Impact ◽  
Soil Organic Carbon Dynamics

Predicting Agricultural Management Influence on Long-Term Soil Organic Carbon Dynamics: Implications for Biofuel Production

2011 ◽  
Vol 103 (1) ◽  
pp. 234-246 ◽  
Author(s):  
H. T. Gollany ◽  
R. W. Rickman ◽  
Y. Liang ◽  
S. L. Albrecht ◽  
S. Machado ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Dynamics ◽  
Agricultural Management ◽  
Biofuel Production ◽  
Soil Organic Carbon Dynamics

scholarly journals Long-term soil organic carbon dynamics in temperate cropland-grassland systems

2021 ◽  
Vol 305 ◽  
pp. 107184 ◽  
Author(s):  
Thomas Guillaume ◽  
Luca Bragazza ◽  
Clément Levasseur ◽  
Zamir Libohova ◽  
Sokrat Sinaj
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Dynamics ◽  
Soil Organic Carbon Dynamics
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