Effects of long-term waste water irrigation on soil organic matter, soil microbial biomass and its activities in central Mexico

2000 ◽  
Vol 31 (5) ◽  
pp. 414-421 ◽  
Author(s):  
J. K. Friedel ◽  
T. Langer ◽  
C. Siebe ◽  
K. Stahr
Keyword(s):  
Waste Water ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Central Mexico ◽  
Soil Microbial

Carbon, nitrogen, and phosphorus stoichiometry characteristics of bulk soil, organic matter, and soil microbial biomass under long-term fertilization in cropland

2018 ◽  
Vol 38 (11) ◽  
Author(s):  
王传杰 WANG Chuanjie ◽  
王齐齐 WANG Qiqi ◽  
徐虎 XU Hu ◽  
高洪军 GAO Hongjun ◽  
朱平 ZHU Ping ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Bulk Soil ◽  
Nitrogen And Phosphorus ◽  
Soil Microbial

scholarly journals Effect of the amount of organic trigger compounds, nitrogen and soil microbial biomass on the magnitude of priming of soil organic matter

PLoS ONE ◽  
2019 ◽  
Vol 14 (5) ◽  
pp. e0216730 ◽  
Author(s):  
Domenico Paolo Di Lonardo ◽  
Wietse de Boer ◽  
Hans Zweers ◽  
Annemieke van der Wal
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Soil Microbial

Incorporation of carbon originating from CO2into different compounds of soil microbial biomass and soil organic matter†

2005 ◽  
Vol 41 (2) ◽  
pp. 135-140 ◽  
Author(s):  
Anja Miltner ◽  
Hans-Hermann Richnow ◽  
Frank-Dieter Kopinke ◽  
Matthias Kästner
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Soil Microbial

The mineralisation of fresh and humified soil organic matter by the soil microbial biomass

2008 ◽  
Vol 28 (4) ◽  
pp. 716-722 ◽  
Author(s):  
P.C. Brookes ◽  
M.L. Cayuela ◽  
M. Contin ◽  
M. De Nobili ◽  
S.J. Kemmitt ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Soil Microbial

scholarly journals Modelling organic matter dynamics in different soils.

1990 ◽  
Vol 38 (3A) ◽  
pp. 221-238 ◽  
Author(s):  
E.L.J. Verberne ◽  
J. Hassink ◽  
P. de Willigen ◽  
J.J.R. Groot ◽  
J.A. van Veen
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
State Level ◽  
N Cycling ◽  
First Order ◽  
Soil Microbial ◽  
First Order Kinetics ◽  
Different Soils

A mathematical model was developed to describe carbon (C) and nitrogen (N) cycling in different soil types, e.g. clay and sandy soils. Transformation rates were described by first-order kinetics. Soil organic matter is divided into four fractions (including microbial biomass pool) and three fractions of residues. The fraction of active soil organic matter was assumed to be affected by the extent of physical protection within the soil, as was the soil microbial biomass. The extent of protection influenced the steady state level of the model, and, hence, the mineralization rates. The mineralization rate in fine-textured soils is lower than in coarse-textured soils; in fine-textured soils a larger proportion of the soil organic matter may be physically protected. The availability of organic materials as a substrate for microorganisms is not only determined by their chemical composition, but also by their spatial distribution in the soil. (Abstract retrieved from CAB Abstracts by CABI’s permission)

scholarly journals Potential of the soil microbial biomass C to tolerate and degrade persistent organic pollutants

2008 ◽  
Vol 3 (No. 1) ◽  
pp. 12-20 ◽  
Author(s):  
G. Mühlbachová
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Contaminated Soil ◽  
Soil Microorganisms ◽  
Soil Microbial Biomass ◽  
Microbial Biomass C ◽  
Microbial Activities ◽  
Soil Microbial Biomass C ◽  
Soil Microbial

A 12-day incubation experiment with the addition of glucose to soils contaminated with persistent organic pollutants (POPs) was carried out in order to estimate the potential microbial activities and the potential of the soil microbial biomass C to degrade 1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane (DDT), polychlorinated biphenyls (PCB) and polycyclic aromatic hydrocarbons (PAHs). The microbial activities were affected in different ways depending on the type of pollutant. The soil organic matter also played an important role. The microbial activities were affected particularly by high concentrations of PAHs in the soils. Soil microorganisms in the PAHs contaminated soil used the added glucose to a lesser extent than in the non-contaminated soil, which in the contaminated soil resulted in a higher microbial biomass content during the first day of incubation. DDT, DDD and DDE, and PCB affected the soil microbial activities differently and, in comparison with control soils, decreased the microbial biomass C during the incubation. The increased microbial activities led to a significant decrease of PAH up to 44.6% in the soil long-term contaminated with PAHs, and up to 14% in the control soil after 12 days of incubation. No decrease of PAHs concentrations was observed in the soil which was previously amended with sewage sludges containing PAHs and had more organic matter from the sewage sludges. DDT and its derivates DDD and DDE decreased by about 10%, whereas the PCB contents were not affected at all by microbial activities. Studies on the microbial degradation of POPs could be useful for the development of methods focused on the remediation of the contaminated sites. An increase of soil microbial activities caused by addition of organic substrates can contribute to the degradation of pollutants in some soils. However, in situ biodegradation may be limited because of a complex set of environmental conditions, particularly of the soil organic matter. The degradability and availability of POPs for the soil microorganisms has to be estimated individually for each contaminated site.

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