CONSERVING OF THE RESOURCES
Biogeochemistry of lignin in soils of mountainous landscapes
- 1 Faculty of Soil Science – Moscow State University, Russia
The relative proportions of lignin phenols are determined by the phylogenetic origin of plants and allow the formation of various low- and high-molecular-weight products of lignin decomposition in the soil, which are involved in humus formation. A whole spectrum of transition vegetation zones are concentrated in the mountain landscapes. The immediate aim of this work was to study the transformation of lignin structures in the soils of different mountainous ecosystems of Tian-Shan and Caucasus. The determination of the lignin in the plants, and soils involved the alkaline oxidation with copper oxide at 170° C under pressure in a nitrogen environment. The phenolic components of the lignin were separated using a gas-liquid chromatography. The composition of lignin phenols in soils serves as a molecular trace of land vegetation and palaroenviromnents.
- Amelung, W. (1997), Zum Klimaeinfluβ auf die Organische Substanz Nordamerikanischer Praärieböden (Bayreuth), 131.
- Angst, G, Kogel-Knabner, I, Mueller, K, Freeman, K. (2017), Aggregation controls the stability of lignin and lipids in clay-sized particulate and mineral associated organic matter, Biogeochemistry, 132(3), 307–324 , doi: 10.1007/s10533-017-0304-2
- Ertel, J. R., & Hedges, J. I. (1984), The lignin component of humic substances: distribution among the soil and sedimentary humic, fulvic and baseinsoluble fractions, Geochim. Cosmochim. Acta, 48, 2065–2074.
- Kovaleva, N, (2018). Isotopic signature of Tian-Shan mountain soils as a record of climatic changes of the Late Pleistocene and Holocene. IOP Conf. Series: Earth and Environmental Science 107012117 doi :10.1088/1755- 1315/107/1/012117