Effecten van boomsoortenmenging op de strooiselafbraak en de nutriëntencyclus

Effecten van boomsoortenmenging op de strooiselafbraak en de nutriëntencyclus

1 juni 2010 om 15:10 door Quentin Ponette

32-4.PNG

De voornaamste bouwstenen voor de groei van bomen zijn koolstof, water en nutriënten. Nutriënten kunnen het bosecosysteem binnenkomen vanuit de atmosfeer (als droge depositie, onder gas- of dampvorm, opgelost in regen, mist of sneeuw), vanuit de bodem via horizontale stromingen, capillaire opstijging of hydraulische lift, en door stikstoffixatie in de aanwezigheid van stikstoffixerende soorten. Nutriënten kunnen het bosecosysteem verlaten door uitspoeling onder de bewortelde zone, horizontale uitloging, oogst van biomassa, en onder specifieke voorwaarden ook door denitrificatie (Fig.1). Naast deze input- en outputstromen zijn er ook stromen binnen het ecosysteem, zoals nutriëntenopname uit de bodem door de wortels, rechtstreekse absorptie van nutriënten door de bladeren, en intern transport van nutriënten binnen de plant (bijvoorbeeld van de bladeren naar de wortels). 

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