Iron-mediated mineralogical control of organic matter accumulation in tropical soils

• Published in: Geoderma Vol. 306; pp. 206 - 216
• Main Authors: Coward, Elizabeth K., Thompson, Aaron T., Plante, Alain F.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.11.2017
• Subjects: ammonium oxalate; carbon; coprecipitation; Extractable carbon; forest soils; granodiorite; Inceptisols; iron; minerals; organic matter; Oxisols; Puerto Rico; Selective dissolution; Short-range order minerals; sodium pyrophosphate; sorption; tropical forests; Tropical soils; Puerto Rico; Tropical soils; Selective dissolution; Extractable carbon; Short-range order minerals

Tropical forest soils contribute disproportionately to the poorly-characterized and persistent deep soil carbon (C) pool. These soils, highly-weathered and often extending one to two meters in depth, may contain an abundance of iron-(Fe) bearing mineral phases. Short-range-order (SRO) minerals are o...