THE INFLUENCE OF TOPOGRAPHY ON THE NATURE AND DISTRIBUTION OF SOIL SULFUR ACROSS A NARROW ENVIRONMENTAL GRADIENT | Zendy

Trenton L. Roberts | Zendy; J. R. Bettany | Zendy

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THE INFLUENCE OF TOPOGRAPHY ON THE NATURE AND DISTRIBUTION OF SOIL SULFUR ACROSS A NARROW ENVIRONMENTAL GRADIENT

Author(s) -

Trenton L. Roberts,

J. R. Bettany

Publication year - 1985

Publication title -

canadian journal of soil science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.592

H-Index - 67

eISSN - 1918-1841

pISSN - 0008-4271

DOI - 10.4141/cjss85-046

Subject(s) - subsoil , soil water , soil horizon , arid , sulfur , horizon , soil science , carbonate , chemistry , calcium carbonate , mineralogy , environmental chemistry , geology , mathematics , paleontology , geometry , organic chemistry

The nature and distribution of forms of sulfur within the soil profile was studied in a climo-toposequence of soils from Saskatchewan. Total and soluble (CaCl 2 -extractable) inorganic SO 4 = generally increased with horizon depth. Calcium carbonate-associated SO 4 = accounted for up to 42% of subsoil S. Organic S decreased significantly with depth, as did the proportion of organic S occurring as organic SO 4 =. Amounts of total S, in surface and subsurface horizons generally increased from upper to lower slope positions. Organic SO 4 = in the surface horizons, as a proportion of the total S, decreased from upper to lower slope positions and across a narrow environmental gradient going from the arid Brown Chernozemic soils in the southwest to the more humid Gray Luvisols in the northeast. Key words: Total S, organic SO 4 =, CaCl 2 -extractable SO 4 =, HCl-extractable SO 4 =, profile distribution

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