Lühiartikkel : Eesti muldkatte huumusseisund ja keskkonnahoidlik majandamine
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Kuupäev
2022
Kättesaadav alates
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian Academic Agricultural Society
Abstrakt
In the framework of the European mission “Soil Deal for
Europe” ambitious tasks have been load to the whole European Union and
forming its states in the field of carbon management. Departing from pedo-
ecological conditions of Estonia, the pros and cons of the European
Union's plans about carbon farming are treated. By the principles of
pedocentric approach the soil humus status and carbon farming
technologies are soil type specifics and should be utilized in the most
detailed as possible soil taxonomic unit, for which by Estonian soil
classification are soil species and soil varieties. Thanks to gathering during
large scale (1:10,000) soil mapping in earlier time data and proceeding
later field experiments in Estonia there are relatively good databases on
soil humus status for all most dominated soil species and/or varieties by
different land use conditions (arable, grass- and forest lands). The main
available quantitative characteristics on soil humus status (expressed via
carbon) are concentration (g C kg‒1) and superficial densities (Mg C ha‒1)
of organic carbon given by soil species and their genetic horizons in above-
named third land use conditions. Besides that, these data have been
calculated (1) separately for humus cover (humipedons) and subsoil layers
and (2) as well in relation to layers with certain thickness (30, 50 and 100
cm). As a qualitative index of humus status, the humus cover types (humus
forms) have been elaborated separately for arable soils and for being in
natural state soils. As the carbon concentration in arable soils depends
mainly on contents of clay particles, watering conditions and calcareous-
ness, was possible to elaborate for all dominating arable soils three humus
(and carbon) concentration levels: scarce, optimal and excess, which are
needed for choice of suitable to soil conditions agro technology. There is
a declared serious shortage of knowledge on composition of soil
organisms’ societies by soil types and on syn- and autecology of their
functioning.
Kirjeldus
Saabunud / Received 12.11.2022 ; Aktsepteeritud / Accepted 29.12.2022 ; Avaldatud veebis / Published online 31.12.2022 ; Vastutav autor / Corresponding author: Raimo Kõlli ; raimo.kolli@emu.ee
Märksõnad
Soil Deal for Europe, soil cover of Estonia, pedocentric approach, flux of organic carbon thorough the soil cover, humus status of soil, carbon farming, pedodiversity and soil biodiversity, articles