Permanent soil observation areas on agricultural sites
Description
It has long been known that soil changes more or less rapidly. Some of these changes have natural causes. Others, in turn, are due to soil pollution caused directly or indirectly by humans. These include, for example, the substance inputs via precipitation and dust (acids, nutrients, heavy metals, radionuclei, organic pollutants, etc.). But also the farmer or forester has always changed the soil through cultivation and use. The vast majority of these processes are very slow and difficult to perceive for the human senses.
In order to document possible changes, the LBEG carries out the soil monitoring programme in Lower Saxony. For this purpose, a network of a total of 90 Soil Permanent Observation Areas (BDF) was established in cooperation with other landing services. Seventy are allocated to local agricultural (BDF-L) sites and twenty for forestry (BDF-F) sites.
The selection of representative BDF was based on geoscientific criteria such as soil and rock conditions, climate and morphology. In addition, the LBEG took into account typical land uses such as agriculture and forestry or nature conservation areas as well as stress factors (immissions, usage-related loads, etc.).
Almost half of the BDF (43) were selected for certain soil pollution situations, such as settlement areas, immission areas, floodplain areas with contaminated river sediments and areas at risk of erosion. The remaining 47 BDFs reflect the diversity of Lower Saxony soils under local management. They also serve as a reference for areas with specific loads.
In order to obtain information about the causes and effects of possible soil changes, the LBEG also determines the substance input via fertilisers and plant treatment agents on all 70 agricultural BDFs as well as the material discharge with the run-off crop. The farmer records all his processing measures.
The aim is to detect possible soil changes on the basis of these representatively selected measuring surfaces, to evaluate cause and effects and to forecast them. If this is achieved, the actors in politics, administration and land use have a secure data basis for their decision-making processes at their disposal in good time.
In other Länder, similar programmes exist, the content of which is coordinated among the implementing institutions. Within Europe, a framework directive is in preparation.
Resources
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https://nibis.lbeg.de/net3/public/ogc.ashx?NodeId=454&Service=WMS&Request=GetCapabilities& |
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