Abstract
Soil organic matter is important because it impacts all soil quality functions. Much less information is available on the dynamics of the residual carbon and nitrogen content and their distribution in continuously cropped arable fields. We described the values of the soil properties, pH, moisture content, organic carbon and total nitrogen considering them to be random variables. We treated their spatial variation as a function of the distance between observations within the study site, a continuously-cropped field dominated by Haplic Acrisols. We discussed the nature and structure of the modeled functions, the semivariograms, and interpreted these in the light of the potential of these soils to sustain agricultural productivity. At these sites there had been no conversion of natural forests to agriculture so the paper does not discuss soil carbon storage for either the regional or global storage. All the properties studied showed spatial non-stationarity for the distances covered, indicating that the variance between pairs of observations increased as separating distances also increased. pH, moisture content and total nitrogen were fitted with the power model whereas the linear model best fitted organic carbon. Total nitrogen had the least nugget variance and pH the highest estimated exponent, {alpha}, from the power
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Okae-Anti, Daniel;
[1]
E-mail: dokaent@yahoo.co.uk;
[2]
Torkpo, Addison;
Kankam-Boadu, Maryross;
Agyei Frimpong, Kwame;
[1]
Obuobi, Daniel
[3]
- Department of Soil Science, School of Agriculture, University of Cape Coast, Cape Coast (Ghana)
- Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)
- Department of Computer Science and Information Technology, University of Cape Coast, Cape Coast (Ghana)
Citation Formats
Okae-Anti, Daniel, E-mail: dokaent@yahoo.co.uk, Torkpo, Addison, Kankam-Boadu, Maryross, Agyei Frimpong, Kwame, and Obuobi, Daniel.
Carbon and nitrogen - The key to biological activity, diversity and productivity in a Haplic Acrisol.
IAEA: N. p.,
2004.
Web.
Okae-Anti, Daniel, E-mail: dokaent@yahoo.co.uk, Torkpo, Addison, Kankam-Boadu, Maryross, Agyei Frimpong, Kwame, & Obuobi, Daniel.
Carbon and nitrogen - The key to biological activity, diversity and productivity in a Haplic Acrisol.
IAEA.
Okae-Anti, Daniel, E-mail: dokaent@yahoo.co.uk, Torkpo, Addison, Kankam-Boadu, Maryross, Agyei Frimpong, Kwame, and Obuobi, Daniel.
2004.
"Carbon and nitrogen - The key to biological activity, diversity and productivity in a Haplic Acrisol."
IAEA.
@misc{etde_20617735,
title = {Carbon and nitrogen - The key to biological activity, diversity and productivity in a Haplic Acrisol}
author = {Okae-Anti, Daniel, E-mail: dokaent@yahoo.co.uk, Torkpo, Addison, Kankam-Boadu, Maryross, Agyei Frimpong, Kwame, and Obuobi, Daniel}
abstractNote = {Soil organic matter is important because it impacts all soil quality functions. Much less information is available on the dynamics of the residual carbon and nitrogen content and their distribution in continuously cropped arable fields. We described the values of the soil properties, pH, moisture content, organic carbon and total nitrogen considering them to be random variables. We treated their spatial variation as a function of the distance between observations within the study site, a continuously-cropped field dominated by Haplic Acrisols. We discussed the nature and structure of the modeled functions, the semivariograms, and interpreted these in the light of the potential of these soils to sustain agricultural productivity. At these sites there had been no conversion of natural forests to agriculture so the paper does not discuss soil carbon storage for either the regional or global storage. All the properties studied showed spatial non-stationarity for the distances covered, indicating that the variance between pairs of observations increased as separating distances also increased. pH, moisture content and total nitrogen were fitted with the power model whereas the linear model best fitted organic carbon. Total nitrogen had the least nugget variance and pH the highest estimated exponent, {alpha}, from the power equations. The soils are highly variable in terms of input or return of organic residue to provide a sink for carbon and nitrogen and the breakdown of these materials as affected by pH, moisture availability and microorganisms. (author)}
place = {IAEA}
year = {2004}
month = {Oct}
}
title = {Carbon and nitrogen - The key to biological activity, diversity and productivity in a Haplic Acrisol}
author = {Okae-Anti, Daniel, E-mail: dokaent@yahoo.co.uk, Torkpo, Addison, Kankam-Boadu, Maryross, Agyei Frimpong, Kwame, and Obuobi, Daniel}
abstractNote = {Soil organic matter is important because it impacts all soil quality functions. Much less information is available on the dynamics of the residual carbon and nitrogen content and their distribution in continuously cropped arable fields. We described the values of the soil properties, pH, moisture content, organic carbon and total nitrogen considering them to be random variables. We treated their spatial variation as a function of the distance between observations within the study site, a continuously-cropped field dominated by Haplic Acrisols. We discussed the nature and structure of the modeled functions, the semivariograms, and interpreted these in the light of the potential of these soils to sustain agricultural productivity. At these sites there had been no conversion of natural forests to agriculture so the paper does not discuss soil carbon storage for either the regional or global storage. All the properties studied showed spatial non-stationarity for the distances covered, indicating that the variance between pairs of observations increased as separating distances also increased. pH, moisture content and total nitrogen were fitted with the power model whereas the linear model best fitted organic carbon. Total nitrogen had the least nugget variance and pH the highest estimated exponent, {alpha}, from the power equations. The soils are highly variable in terms of input or return of organic residue to provide a sink for carbon and nitrogen and the breakdown of these materials as affected by pH, moisture availability and microorganisms. (author)}
place = {IAEA}
year = {2004}
month = {Oct}
}