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| Titel |
The sustainable management of ameliorated peatlands on changed land use conditions; scenarios of constrains and possibilities |
| VerfasserIn |
Merrit Shanskiy, Elis Vollmer, Priit Penu |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250114654
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| Publikation (Nr.) |
 EGU/EGU2015-15452.pdf |
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| Zusammenfassung |
| The utilization of organic soils for forestry or agriculture requires the land amelioration that
could result on the peat losses from 15 to 20 t ha-1 in a year on following five years. After
five years, the peat losses will be 5 – 15 t ha-1 in a year. The agricultural land resource on
different types of organic soils (including ameliorated bogs) in Estonia is 360 000 ha that
comprises 41% of total agricultural land area.
The landscape iself is a valuable resource that considered to be a set of characteristics that
satisfy needs of people using the landscape: economical or non-economical value; ecological,
social, recreational, aesthetical, educational, scientific or even protective value. More diverse
landscapes have higher biodiversity and yield more services to public, they are also seen as
more sustainable and resilient to short-term changes. In order to maintain landscape diversity,
sustainable maintenance is important.
The purpose of current study was to estimate the land use potential on three different
ameliorated peat areas and to develop the methodology for the futher sustainable utilization in
order to secure the best ecological functioning of soil while taking into account maintaining
and increasing landscape value. Therefore, site specific soil sampling (n=77) was
carried out on predetermined eight study sites. Soil samples were analyzed for main
agrochemical parameters (n=17; pHKCl, P, K, C%, N%, S%, ash, main anions
and cations). This enables determing site-specific best suitable crops and land use
scenarios.
For the land resource description (soils type, topology) the digital soil map (1: 10,000) and
field sudy based database were used for describing the model areas. For more specific
identification of the field layers the Agricultural Registers and Information Board (ARIB)
and databases of the Common Agricultural Policy (CAP) payments were used for
subsidy schemes chekout. Estonian Nature Information System map tool was used to
specify the restrictions on study sites by nature conversation on the maps data about
nature protected objects and buffer zones or forming restricted areas around those
objects.
The results will indicate the utilization possibility and most sustainable scenarios for different
land use cases. Moreover, the possible changes in soil functioning accordingly to site specific
soil conditions will be discussed and presented. |
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