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The discovery of the formation and decomposition of organic matter in arable soil can now be done with the help of space, as evidenced by the results of recent research that used satellite imagery. German journalist of the agronomy portal Agrarheute, Karl Bokholt, reports: "The revolutionary approach using space technology helps to implement carbon agriculture within the framework of regenerative agriculture, which involves farmers receiving payments for soil carbon enrichment. Recently, the EU Council approved a proposal to issue CO 2 certificates for carbon agriculture on a voluntary carbon market, allowing farmers to generate income from carbon farming."
Sandy soils in Germany are under particular pressure as the humus content in the country's fields and pastures continues to decline. Scientists used satellite images and soil monitoring data from the Bavarian State Agricultural Institute on 100 arable plots. They studied the slightest changes in soil color, ignoring factors such as vegetation cover and moisture. The method was developed by Tom Brögg and his colleague K. Stefan Erasmi from the Thünen Institute. The results of their work were published in the journal Global Change Biology.
The dark coloration of the soil indicates a large amount of organic matter in it. Carbon farming is based on the idea of returning carbon dioxide emissions to the soil. The study authors note that satellite monitoring of organic matter can become an important tool in humus formation and climate change mitigation. In order for CO 2 certificates to guarantee real reduction of greenhouse gas emissions, they must undergo independent verification. The new method allows for calculating the amount of carbon dioxide reduced by farmers and obtaining carbon credits. Satellite images, increasingly available in higher quality, now allow farmers to independently monitor humus formation.
The organic matter content in soils is a key indicator of their fertility. Additionally, it is directly related to climate change, as the loss of organic matter leads to carbon dioxide (CO 2) emissions. Factors influencing the formation and decomposition of humus in soil include soil management, land use history, and climatic conditions. Changes in humus content are often so insignificant that it is difficult to determine their dynamics using conventional methods and selective analysis.
