Studies on nutrient distribution in some Zambian soils with special reference to sulphur using GIS (Geographic Information Systems), 1: Total sulphur distribution in major Zambian soils

Total sulphur content of some benchmark soils was evaluated by correlating with the contents of soil organic C and amorphous oxides (Al and Fe), and the particle size distribution. An equation model to calculate the content of total soil sulphur was first obtained by regression analysis. Introducing...

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Bibliographic Details
Published in:Soil science and plant nutrition (Tokyo) 2005-12, Vol.51 (7)
Main Authors: Tsuji, T.(Japan International Cooperation Agency, Lusaka (Zambia). Zambia Office), Mambo, A, Phiri, L.K, Msoni, R, Sokotela, S.B, Yerokun, O.A
Format: Article
Language:English
Subjects:
AZUFRE
DISTRIBUCION GEOGRAFICA
DISTRIBUTION GEOGRAPHIQUE
GEOGRAPHICAL DISTRIBUTION
GEOGRAPHICAL INFORMATION SYSTEMS
NUTRIENTES
NUTRIENTS
SISTEMAS DE INFORMACION GEOGRAFICA
SOIL
SOL
SOUFRE
SUBSTANCE NUTRITIVE
SUELO
SULPHUR
SYSTEME D'INFORMATION GEOGRAPHIQUE
ZAMBIA
ZAMBIE
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Summary:Total sulphur content of some benchmark soils was evaluated by correlating with the contents of soil organic C and amorphous oxides (Al and Fe), and the particle size distribution. An equation model to calculate the content of total soil sulphur was first obtained by regression analysis. Introducing these chemical and physical data of all the map units except for the wetlands into the equation model, the sulphur level on a national scale was estimated for each soil mapping unit in the exploratory soil map of Zambia. Second, the total sulphur content was rated into 3 classes based on the frequency distribution of the total sulphur content in the benchmark soils. Finally, the rated total sulphur content was incorporated into the national soil map database of GIS to produce a map with the total sulphur content of Zambian soils. The extent of each class was calculated and the distribution of the areas was examined in relation to rainfall and soil formation.
ISSN:0038-0768
1747-0765