Anthropogenic N deposition increases soil organic matter accumulation without altering its biochemical composition

2016 ◽  
Vol 23 (2) ◽  
pp. 933-944 ◽  
Author(s):  
Donald R. Zak ◽  
Zachary B. Freedman ◽  
Rima A. Upchurch ◽  
Markus Steffens ◽  
Ingrid Kögel-Knabner
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Biochemical Composition ◽  
N Deposition ◽  
Organic Matter Accumulation

Oxidases and hydrolases mediate soil organic matter accumulation in chernozem of northeastern China

Geoderma ◽  
2021 ◽  
Vol 403 ◽  
pp. 115206
Author(s):  
Guohui Wu ◽  
Zhenhua Chen ◽  
Dongqi Jiang ◽  
Nan Jiang ◽  
Hui Jiang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Northeastern China ◽  
Organic Matter Accumulation

scholarly journals The Regulation by Phenolic Compounds of Soil Organic Matter Dynamics under a Changing Environment

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Kyungjin Min ◽  
Chris Freeman ◽  
Hojeong Kang ◽  
Sung-Uk Choi
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Environmental Changes ◽  
N Deposition ◽  
Interactive Effects ◽  
Plant Metabolites ◽  
Regulatory Effects ◽  
Dynamics Models ◽  
The Relationship

Phenolics are the most abundant plant metabolites and are believed to decompose slowly in soils compared to other soil organic matter (SOM). Thus, they have often been considered as a slow carbon (C) pool in soil dynamics models. Here, however, we review changes in our concept about the turnover rate of phenolics and quantification of different types of phenolics in soils. Also, we synthesize current research on the degradation of phenolics and their regulatory effects on decomposition. Environmental changes, such as elevated CO2, warming, nitrogen (N) deposition, and drought, could influence the production and form of phenolics, leading to a change in SOM dynamics, and thus we also review the fate of phenolics under environmental disturbances. Finally, we propose the use of phenolics as a tool to control rates of SOM decomposition to stabilize organic carbon in ecosystems. Further studies to clarify the role of phenolics in SOM dynamics should include improving quantification methods, elucidating the relationship between phenolics and soil microorganisms, and determining the interactive effects of combinations of environmental changes on the phenolics production and degradation and subsequent impact on SOM processing.

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