Estimate of Organic Carbon in World Soils

Bohn, Hinrich L.

doi:10.2136/sssaj1976.03615995004000030045x

Cited by 161 publications

(45 citation statements)

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“…For the essentially primeval world represented by Figure 6, the MAPCOUNT-estimated total is 1547 x lo9 metric tons of soil carbon. This value compares favourably (Table 11) with estimates made by other authors using a variety of ... ....................... Bolin (1970) to a high of 2946 x lo9 mtC by Bohn (1976). This is well over a four-fold range in estimates for one of the largest carbon pools on the earth.…”

Section: World Totalssupporting

confidence: 74%

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World patterns and amounts of detrital soil carbon

Meentemeyer¹,

Gardner²,

Box³

1985

Earth Surf Processes Landf

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Soil carbon data were collected from published sources for 50 measurement sites spanning the globe's major climate and vegetation types. For each site, climate, vegetation, and land-use variables were determined and entered into a multiple curvilinear regression program to predict soil carbon. The best model incorporates an estimate of site disturbance, annual actual evapotranspiration, and annual soil moisture deficit, and yields an R = 0.803. The curvilinear regression equation was coupled with a large climatic database and computer cartography programs to produce first-generation maps of estimated soil carbon. These maps correctly portray soil carbon as high in boreal and cool temperate zones arid low in deserts and tropical zones.Computer planimetry of maps of soil carbon for an 'undisturbed' world and for a 'disturbed' world resulted in estimates of 1457 x lo9 mtC and 504 x lo9 mtC respectively. These estimates compare favourably with recent estimates using other approaches. Clearly, the disturbance factor is critical to future refinements in estimates, suggesting the need for detailed studies of the relationship between land-use history and the creation and destruction of this important carbon pool.

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Section: World Totalssupporting

confidence: 74%

“…Our estimate also falls between the high (1728) and low (1309) estimates recently published by Zinke et al (1984). If one excludes our 'disturbed' estimate and the earlier high estimate by Bohn (1976), the various estimates for an undisturbed world average 1533 x lo9 mtC (Table 11).…”

Section: World Totalsmentioning

confidence: 97%

World patterns and amounts of detrital soil carbon

Meentemeyer¹,

Gardner²,

Box³

1985

Earth Surf Processes Landf

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“…The effect of carbon density on carbon storage was 100.1%, which was mainly due to the implementation of the policy of returning farmland to forest (grassland) in the late 1990s [8]. This policy effectively promoted the restoration and reconstruction of vegetation in the Loess Plateau, including the existing vegetation area.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Carbon Storage and Its Contributing Factors—A Case Study in the Loess Plateau (China)

Liu

Zhao

2018

Energies

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Abstract:The Chinese Loess Plateau is an ecologically fragile and sensitive area. The carbon storage dynamics in this region and the contributions from land use/land cover change (LUCC) and carbon density from 2000 to 2010 were analyzed in this paper. Normalized difference vegetation index (NDVI), biomass and soil carbon data in 2000 were used for regression analysis of biomass and soil carbon, and an inversion analysis was used to estimate biomass and soil carbon in 2005 and 2010. Quadrat data, including aboveground biomass and soil organic carbon, were used to calibrate the model output. Carbon storage and sequestration were calculated by the InVEST toolset with four carbon pools, including aboveground biomass, belowground biomass, dead wood and soil carbon. The results showed that carbon storage increased steadily from 2000 to 2010, increasing by 0.260 billion tons, and that woodland area increased and arable land decreased; the overall trend in land cover improved, but the improvement was not pronounced. Carbon storage in the Loess Plateau was correlated with geographical factors. We found that when assuming a constant carbon density, carbon storage decreased, accounting for −1% of the carbon storage dynamics. When assuming no land conversion, carbon storage increased, accounting for 101% of the carbon storage dynamics.

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“…Concerns over global warming have led to several investigations on quality, kind, distribution and behaviour of soil organic carbon [4,5,6,7] that have led to various quantitative estimates of soil organic carbon [8,9,10]. Reporting of organic' carbon status of soils in terms of per cent distribution is one way [3]; yet, it does not show the stock and reservoir of organic carbon in a particular area.…”

Section: Introductionmentioning

confidence: 99%

Soil Organic Carbon Concentrations and Stocks under Maize/Legume Cropping System in Alfisols of a Savanna Zone, Nigeria

Chidowe¹,

Destiny²,

Abdulkadir³

2017

BJAST

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Carbon sequestration in soil aggregates and Carbon stock (SOC) under Maize-Legume Cropping system in a Northern Guinea Savanna Alfisol, Nigeria trial was conducted in 2014 and 2015 cropping seasons. The experiment was a randomized complete block design (RCBD), replicated three times and treatments used were: Sole Maize (M), Desmodium (D) and Soybeans (S); Maizesoybeans intercrop (MS), Maize-Desmodium intercrop (MD), Maize Strip cropped with Soybean (MS 2:4) and Maize Strip cropped with Desmodium (MD 2:4). Data obtained were evaluated for Organic carbon, carbon stock, Bulk density and mean weight diameter of aggregates in the soil. Results obtained show that Mono-crop (Sole) Maize treatment gave significantly higher BD than other treatments at 8WAP and 16WAP, suggesting that soils under sole maize were degraded for sustainable crop production. Organic carbon sequestered over 2014 to 2015 was least under MD and highest under MD2:4 treatments and mean carbon stock sequestered in the macro and micro aggregates was highest under MD 2:4 (28.35 t Cha -1 ) and least under MD (8.82 t Cha -1 ). Soil Chidowe et al.; BJAST, 21(1): 1-12, 2017; Article no.BJAST.32538 2 organic carbon (SOC) sequestered in macro aggregates under MS (1.38 gkg -1 ) were significantly higher than the other treatments. Maize/Desmodium 2:4 treatment was inferred to have best improved soil conditions (quality/health) for sustainable crop production, mitigate climate change and global warming by sequestering carbon better than the other treatments. Original Research Article

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Estimate of Organic Carbon in World Soils

Cited by 161 publications

References 0 publications

World patterns and amounts of detrital soil carbon

World patterns and amounts of detrital soil carbon

Analysis of Carbon Storage and Its Contributing Factors—A Case Study in the Loess Plateau (China)

Soil Organic Carbon Concentrations and Stocks under Maize/Legume Cropping System in Alfisols of a Savanna Zone, Nigeria

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