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November 12, 2025 51 mins

I detta avsnitt samtalar vi om ”grunden” för all odling. Vi samtalar med geologen, biologen, kemisten, musikern och läraren på Linnéuniversitetet Claes-Göran Alriksson om marklära. I alla tider har den jordbrukande människan varit duktig på att läsa av marken och dess flora för att lyckas med sin odling. I skogsbruket leder denna kunskap fram till det vi benämner ståndortsanpassning: Att välja rätt trädslag till rätt plats. Du får också reda på vilken bergart som lagrat enorma mängder med koldioxid från atmosfären.

Vi som spelat in avsnittet om marklära är Claes-Göran Alriksson, Elin Varde, Hanna Nero, Åke Carlsson och Harald Säll. Vi försöker sammanfatta berggrundens uppkomst, mineralogi och viktiga kemiska ämnen. Men också den största landskapsarkitekten inlandsisens direkta eller indirekta danande av jordarterna som ligger ovanpå berggrunden. Vi talar också om betydelsen av jorddjupets mäktighet och vattnets rörelse i landskapet som är av avgörande betydelse för växtlighetens sammansättning.

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