Humifikācijas un ķīmisko elementu akumulācijas raksturs augsto purvu kūdrā atkarībā no tās sastāva un veidošanās
Автор
Silamiķele, Inese
Co-author
Latvijas Universitāte. Ģeogrāfijas un Zemes zinātņu fakultāte
Advisor
Nikodemus, Oļģerts
Дата
2010Metadata
Показать полную информациюАннотации
Ineses Silamikeles promocijas darba „Humifikacijas un kimisko elementu
akumulacijas raksturs augsto purvu kudra atkariba no tas sastava un veidošanas” tiek
apskatiti procesi kudras veidošanas gaita, pienemot, ka galvenais kudras masas
elementu avots ir kudru veidojošie organismi, gruntsudeni un atmosferas nokrišni.
Vides piesarnojuma rakstura, ka ari kudras sastava del elemntu uzkrašanas ipatnibas
kudra var but izteikti regionalas. Izmantojot multiparametru izpetes metodes
analizetas 6 Latvijas purvos iegutas kudras. Rezultati apliecina, ka kimisko elementu
saturs purvu kudra ir atkarigs gan no kudras, gan no petita elementa ipašibam. Katram
elementam, atkariba no konkreta purva uzbuves, koncentracijas straujš pieaugums
sakas atškirigos dzilumos. Kudra purvos veido 3 limenu sistemu ar atškirigiem šajos
limenos norisošo procesu raksturiem. The aim of Ineses Silamikeles doctoral thesis „The character of humification and
accumulation of chemical elements in raised-bog peat depending on its composition
and formation” is to study the character of accumulation of chemical elements in peat
depending on peat properties, features of bogs, and the character of peat
accumulation, as well as the impact of local and regional pollution sources on the type
of element accumulation in raised bogs of Latvia. The main sources of elements in the
peat mass are organisms that form peat, groundwater, and precipitation, whereas peat
properties determine the capacity of peat to accumulate chemical elements. Changes
in peat properties depend on the location of peat in the horizontal and vertical crosssections
of the bog, on the water regime, and on the composition and the specific
character of decomposition of peat-forming plants. Regarding accumulation of
chemical elements, bog peat can be classified according to a system of three levels,
with different processes going on at each level.