Soil Organic Matter and Biological Activity

1985 ◽  
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Soil Organic Matter

scholarly journals Soil biological activity of mulching and cut/harvested land set aside

2008 ◽  
Vol 54 (No. 5) ◽  
pp. 204-211 ◽  
Author(s):  
M. Růžková ◽  
L. Růžek ◽  
K. Voříšek
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Soil Organic Matter ◽  
Basal Respiration ◽  
Italian Ryegrass ◽  
Experimental Plot ◽  
Biological Parameters ◽  
Soil Biological Activity ◽  
Microbial Cells ◽  
Glyphosate Herbicide

Formerly arable luvic chernozem set aside for ten years (1997–2006) with different herbaceous cover (grass, legumes and their mixtures) and agronomical practices (mulching and cut/harvesting) was studied. The experimental plot was maintained as black, spontaneous and controlled fallows from 1997 until July 2003 (BD period). In July 2003 the plots were desiccated by glyphosate herbicide and were run as a black fallow until August 2004 (AD). The last period (AG) was characterized by monoculture of Italian ryegrass cut/harvested twice a year until October 2006. The experimental soils were characterized with 18 parameters. Mulched plots in all periods (BD, AD and AG) were evaluated as highly microbial active plots. The black fallow (BD) permanently maintained by glyphosate herbicide was the lowest in biological parameters. The desiccation caused a highly significant increase (<I>P</I> < 0.01) of nitrates in topsoil, but in following period (AG) their significant decrease was detected. Desiccation enhanced carbon immobilization into microbial cells especially on mulched and cut/harvested sites (BD, AD). Due to mulching accumulation of soil organic matter highly significantly increased (<I>P</I> < 0.01). This induced a highly significant (<I>P</I> < 0.01) increase in the basal respiration (AD, AG) as the soil organic matter accumulated in the period BD was intensively mineralized.

Uptake by Beetroot Tissue and Biological Activity of 14C-Labelled Fractions of Soil Organic Matter

1974 ◽  
Vol 2 (1) ◽  
pp. 126-129 ◽  
Author(s):  
DEREK VAUGHAN ◽  
MARTIN V. CHESHIRE ◽  
CHARLES M. MUNDIE
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Soil Organic Matter

Soil organic matter and biological activity under long-term contamination with copper

2021 ◽  
Author(s):  
Inna V. Zamulina ◽  
Andrey V. Gorovtsov ◽  
Tatiana M. Minkina ◽  
Saglara S. Mandzhieva ◽  
Marina V. Burachevskaya ◽  
...  
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Soil Organic Matter

scholarly journals QUALITATIVE ASSESSMENT OF ROADSIDE POLLUTED SOILS / KOKYBINIS UŽTERŠTŲ PAKELĖS DIRVOŽEMIŲ VERTINIMAS

2013 ◽  
Vol 5 (4) ◽  
pp. 363-368
Author(s):  
Eglė Kiaunytė ◽  
Mantas Pranskevičius
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Soil Organic Matter ◽  
Soil Respiration ◽  
Co2 Emission ◽  
Carbon Emission ◽  
Total Carbon ◽  
Qualitative Assessment ◽  
Soil Quality Indicators ◽  
Polluted Soils

Soil as an ecosystem is actively involved in the climate formation process. Therefore, it is important to assess soil quality indicators such as total carbon and CO2 emissions. Soil respiration shows carbon emission from soil into the atmosphere. This is a great indicator illustrating the biological activity of soil. The most effective CO2 emission can be noticed in the afternoon and may reach 0,201 g CO2 m-2h-1. Soil organic matter is considered to be its indicator of quality, which is one of the most important components of biosphere consistency and stability. Following the conducted study, a significant trend towards the content of total carbon in the layer of the surface (0–10 cm) soil was observed. Article in Lithuanian. Santrauka Dirvožemis, kaip ekosistema, aktyviai dalyvauja klimato formavimosi procesuose, todėl svarbu vertinti tokius dirvožemio kokybės rodiklius kaip bendroji anglis ir CO2 emisija. Dirvožemio kvėpavimas rodo anglies emisiją iš dirvožemio į atmosferą. Tai rodiklis, gerai iliustruojantis dirvožemio biologinį aktyvumą. Aktyviausia CO2 emisija – iki 0,201 g CO2 m–2h–1 esti popiečio valandomis. Dirvožemio organinių medžiagų kiekis laikomas dirvožemio kokybės rodikliu, vienu svarbiausių biosferos pastovumo ir stabilumo veiksnių. Atliekant tyrimą pastebėta ryški bendrosios anglies kiekių dominavimo paviršiniame (0–10 cm) dirvožemio sluoksnyje tendencija.

scholarly journals Evaluation of Total Organic Carbon Quantity and Emissions of CO2 from Soil Into the Atmosphere Near Street

2021 ◽  
Vol 28 (3) ◽  
pp. 399-410
Author(s):  
Mantas Pranskevicius ◽  
Dainius Paliulis
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Soil Organic Matter ◽  
Organic Carbon ◽  
Total Organic Carbon ◽  
Carbon Emission ◽  
Time Of Day ◽  
Air Humidity ◽  
Soil Quality Indicators ◽  
Soil Biological Activity

Abstract Soil as an ecosystem is actively involved into climate formation process. Therefore, it is important to assess such soil quality indicators as total organic carbon (TOC) and CO2 emissions. Soil organic matter is considered to be its indicator of quality, which is one of the most important components of biosphere consistency and stability. Soil respiration shows carbon emission from soil into the atmosphere. This is a great indicator, illustrating soil biological activity. Impact of soil temperature, air humidity, time of day was evaluated on CO2 emission from the soil. The highest CO2 emission is observed in afternoon hours, up to 0.201 g CO2∙m–2·h–1.

Biological activity of soil organic matter mobilized by root exudates

Chemosphere ◽  
2002 ◽  
Vol 46 (7) ◽  
pp. 1075-1081 ◽  
Author(s):  
S. Nardi ◽  
E Sessi ◽  
D Pizzeghello ◽  
A Sturaro ◽  
R Rella ◽  
...  
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Soil Organic Matter ◽  
Root Exudates
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