Calculation of organic matter and nutrients stored in soils under contrasting management regimes
B. H. Ellert,J. R. Bettany +1 more
TLDR
In this paper, the mass of organic C, N, P and S in Gray Luvisol soils under native aspen forest and various cropping systems was investigated and compared.Abstract:
Assessments of management-induced changes in soil organic matter depend on the methods used to calculate the quantities of organic C and N stored in soils. Chemical analyses in the laboratory indicate the concentrations of elements in soils, but the thickness and bulk density of the soil layers in the field must be considered to estimate the quantities of elements per unit area. Conventional methods that calculate organic matter storage as the product of concentration, bulk density and thickness do not fully account for variations in soil mass. Comparisons between the quantities of organic C, N, P and S in Gray Luvisol soils under native aspen forest and various cropping systems were hampered by differences in the mass of soil under consideration. The influence of these differences was eliminated by calculating the masses of C, N, P and S in an "equivalent soil mass" (i.e. the mass of soil in a standard or reference surface layer). Reassessment of previously published data also indicated that estimates of...read more
Citations
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Journal ArticleDOI
Review of greenhouse gas emissions from crop production systems and fertilizer management effects
TL;DR: A review of the available science on the effects of N source, rate, timing, and placement, in combination with other cropping and tillage practices, on GHG emissions was conducted as mentioned in this paper.
Journal ArticleDOI
Impact of tropical land-use change on soil organic carbon stocks - a meta-analysis
TL;DR: In this paper, a global meta-analysis of 385 studies on land-use change in the tropics were explored to estimate the organic carbon (SOC) stock changes for all major land use change types.
Journal ArticleDOI
Does conversion of forest to agricultural land change soil carbon and nitrogen? a review of the literature
TL;DR: In this paper, the authors reviewed the literature to assess changes in soil carbon (C) upon conversion of forests to agricultural land and found that conversion of forest to cultivated land led to an average loss of approximately 30% of soil C.
Journal ArticleDOI
Carbon sequestration in agricultural soils via cultivation of cover crops – A meta-analysis
Christopher Poeplau,Axel Don +1 more
TL;DR: In this article, the authors conducted a meta-analysis to derive a carbon response function describing soil organic carbon (SOC) stock changes as a function of time and estimated a potential global SOC sequestration of 0.03% of the direct annual greenhouse gas emissions from agriculture.
Journal ArticleDOI
Temporal dynamics of soil organic carbon after land-use change in the temperate zone ― carbon response functions as a model approach
Christopher Poeplau,Axel Don,Lars Vesterdal,Jens Leifeld,Bas van Wesemael,Jens Schumacher,Andreas Gensior +6 more
TL;DR: In this article, carbon response functions (CRFs) were derived to model the temporal dynamic of soil organic carbon (SOC) stocks after five different LUC types (mean soil depth of 30±6cm).
References
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Journal Article
The global carbon cycle.
Wilfred M. Post,Tsung-Hung Peng,William R. Emanuel,Anthony W. King,Virginia H. Dale,Donald L. DeAngelis +5 more
Journal ArticleDOI
Changes in soil carbon inventories following cultivation of previously untilled soils
TL;DR: In this paper, the authors reexamined the conclusions of previous reviews of this subject and found no relation between carbon content of uncultivated soil and the percentage lost following cultivation, and they also found that most of the loss of soil carbon occurs within the first few years (even within two years in some cases) following initial cultivation.
Journal ArticleDOI
Microbial biomass and mineralizable nitrogen distributions in no-tillage and plowed soils
TL;DR: In this article, the distribution of soil microbial biomass and potentially mineralizable nitrogen (PMN) in long-term tillage comparisons at seven sites in the United States varied with tillage management and depth in soil.
Book ChapterDOI
Changes in Soil Carbon Storage and Associated Properties with Disturbance and Recovery
TL;DR: A review and analysis of what is known about the effects of agriculture on soil carbon storage can be found in this paper, where the authors review the present estimates of the size of the pool of carbon in world soils.