Properties of soil organic matter of Plaggic Anthrosols from Northwest Germany, Northwest and North Russia

2009 ◽  
Vol 55 (5) ◽  
pp. 477-492 ◽  
Author(s):  
Olga Kalinina ◽  
Oleg Chertov ◽  
Marina Nadporozhskaya ◽  
Luise Giani
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Northwest Germany ◽  
Properties Of Soil

scholarly journals Thermal stability of soil organic matter responds to long-term fertilization practices

2006 ◽  
Vol 3 (2) ◽  
pp. 309-320 ◽  
Author(s):  
J. Leifeld ◽  
U. Franko ◽  
E. Schulz
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Mineral Fertilization ◽  
Scanning Calorimetry ◽  
Organic C ◽  
Fertilization Experiment ◽  
Thermal Stability Of ◽  
Dsc Thermograms ◽  
Properties Of Soil

Abstract. We used differential scanning calorimetry (DSC) to infer thermal properties of soil organic matter (SOM) in the static fertilization experiment in Bad Lauchstädt, Germany, which has been established in 1902. Four treatments (null N, change from null to manuring in 1978 NM, change from manuring to null in 1978 MN, and permanent manure and mineral fertilization since 1902 M) were sampled in 2004. Soil organic carbon contents were highest for M (2.4%), lowest for N (1.7%), and similar for MN and NM (2.2%). DSC thermograms were characterized by three peaks at around 354, 430, and 520°C, which were assigned to as thermally labile and stable SOM and combustion residues from lignite, respectively. DSC peak temperatures were relatively constant among treatments, but peak heights normalized to the organic C content of the soil were significantly different for labile and stable SOM. Labile C was higher for M>MN=NM=N, and stable C decreased in the order N=NM>MN=M, showing that agricultural depletion of SOM increases the share of thermally stable C. Lignite-derived C was not affected by management, suggesting a homogeneous deposition across treatments.

scholarly journals Thermal stability responses of soil organic matter to long-term fertilization practices

2006 ◽  
Vol 3 (3) ◽  
pp. 371-374 ◽  
Author(s):  
J. Leifeld ◽  
U. Franko ◽  
E. Schulz
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Mineral Fertilization ◽  
Scanning Calorimetry ◽  
Organic C ◽  
Fertilization Experiment ◽  
Labile C ◽  
Dsc Thermograms ◽  
Properties Of Soil

Abstract. We used differential scanning calorimetry (DSC) to infer thermal properties of soil organic matter (SOM) in the static fertilization experiment in Bad Lauchstädt, Germany, which has been established in 1902. Four treatments (null N, change from null to manuring in 1978 NM, change from manuring to null in 1978 MN, and permanent manure and mineral fertilization since 1902 M) were sampled in 2004. Soil organic carbon contents were highest for M (2.4%), lowest for N (1.7%), and similar for MN and NM (2.2%). Three heat flow peaks at around 354°C, 430°C, and 520°C, which were assigned to as thermally labile and stable SOM and combustion residues from lignite, respectively, characterized DSC thermograms. DSC peak temperatures were relatively constant among treatments, but peak heights normalized to the organic C content of the soil were significantly different for labile and stable SOM. Labile C was higher for M>MN=NM=N, and stable C decreased in the order N=NM>MN=M, showing that agricultural depletion of SOM increases the share of thermally stable C. Lignite-derived C was not affected by management, suggesting a homogeneous deposition across treatments.

scholarly journals SOIL ORGANIC MATTER STATUS IN AGRICULTURAL SOIL SEQUENCE OF FORMER SHORELINE OF DISAPPEARING SUMOWSKIE LAKES, NORTH-EASTERN POLAND

2016 ◽  
Vol 48 (1) ◽  
pp. 65
Author(s):  
Maciej Markiewicz ◽  
Łukasz Mendyk ◽  
Sławomir S. Gonet
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Groundwater Level ◽  
Agricultural Soil ◽  
Southern Slope ◽  
Lake District ◽  
Organic Matter Quality ◽  
North Eastern ◽  
Lake Bottom ◽  
Properties Of Soil

<p>The aim of the study has been to define the stocks and the basic properties of soil organic matter in agricultural-used soil sequence located in the former shoreline of disappearing lakes. The study area is located in the catchment of the Sumowskie Lakes, the Brodnica Lake District, North-Eastern Poland. The investigations involved preparation of five soil pits located in the south-western part of the former Sumowskie Lake bottom and on the southern slope of the adjacent kame hill. The greatest soil transformation is reflected in the quality and quantity of the soil organic matter. Indexes of organic matter quality and TOC stocks are significantly changing along the studied transect. The strongly humidified organic matter is found in mursh horizons. Gyttja layers above the groundwater level have a medium humification index. Horizons saturated with water are very low humidified. TOC stocks drop along the analysed soil sequence from the biogenic plain to the top of the kame hill.</p><p> </p><p>Celem badań było określenie zasobów i podstawowych właściwości materii organicznej sekwencji rolniczo użytkowanych gleb dawnej strefy brzegowej zanikających jezior. Obszar badań był zlokalizowany w zlewni jezior Sumowskich na Pojezierzu Brodnickim w Polsce północno-wschodniej. Analizowano transekt składający się z pięciu profili glebowych znajdujących się w pd.-zach. części dawnego Jeziora Sumowskiego. Obejmował on dno dawnego jeziora oraz przylegające wzgórze kemowe. Największe zróżnicowanie gleb dotyczyło ilości i jakości glebowej materii organicznej. Zarówno właściwości materii organicznej, jak i jej zasoby wyraźnie różnicują się w analizowanym transekcie. Materia organiczna poziomów murszowych gleb pojeziornych odznacza się najwyższym stopniem humifikacji, warstwy gytii, powyżej poziomu wód gruntowych, pośrednim, a poziomy nasycone wodą najniższym spośród analizowanych. Zasoby węgla organicznego zmniejszają się wzdłuż transektu od gleb pojeziornych do szczytu pagórka kemowego (pararędziny).</p>

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