Visual assessment of effects of tillage on soil properties

McKeague, J. A.; Wang, C.

doi:10.1016/0167-1987(86)90419-8

Cited by 1 publication

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“…Among the phenolic compounds produced from the decompo- sition of organic matter, the occurrence of water-soluble phenolic compounds such as phenol, 2-CP, 2,4-DMP, 2,4-DCP, 2,4,6-TCP, and 4-NP were measured. The soluble fraction of phenolic compounds, mainly phenolic acids and low molecular mass polymers, is strongly complexing (Mckeague and Wang, 1986;Mench et al, 1988;Gallet and Keller, 1999). Gallet and Keller (1999) had measured DOC and total phenols in capillary and lysimetric waters collected in different layers of soil profiles.…”

Section: Discussionmentioning

confidence: 99%

Production of Recalcitrant Organic Matter under the Influence of Elevated Carbon Dioxide and Temperature

Park

Choi

2014

Water Environment Research

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The effects of elevated CO 2 and temperature on the quantity and quality of dissolved organic carbon (DOC) of wetland sediments were investigated by measuring organic matter decomposition rates and phenolic compounds as target recalcitrant organic matter. Mean rates of anaerobic microbial metabolism were consistently higher both in vegetated sediments and in elevated CO 2 and temperature, although the differences were not statistically significant (P , 0.05). Concentrations of phenolic compounds in sediments with vegetation are significantly different (P , 0.05) from those in sediments without vegetation. Regarding the biodegradability of the phenolic compounds, vegetated sediments showed higher concentrations of 2-chlorophenol and 2,4-dimethylphenol under elevated CO 2 and temperature conditions, which means that more refractory material can be produced through enhanced organic matter degradation by elevated CO 2 and temperature. The produced phenolic compounds can be transported to the freshwater ecosystem and influence the recalcitrance of DOC. Water Environ. Res., 86, 779 (2014).

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