Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Methane flux measurements - methods and results.

Methan Fluß Messungen - Methoden und Ergebnisse
: Schütz, H.; Seiler, W.

Exchange of trace gases between terrestrial ecosystems and the atmosphere
Chicester: Wiley and Sons, 1989
Dahlem Konferenzen <1989>
Fraunhofer IFU; 2002 in Helmholtz-Gesellschaft integriert

CH4 fluxes from (or to) soils, sediments, and the digestive tract of animals and humans have been studied during the last decade. The most frequently employed technique in soil/sediment studies is the closed (static) chamber (box) technique. Open chambers are primarily used in animal studies. High areal and temporal variations of CH4 flux rates (over 5 orders of magnitude) have been found in wetland environments; therefore, comparative and continuous measurements are required to obtain reliable average flux rates. From the data presently available, biogenic CH4 from natural wetlands, rice paddies, and ruminants represents the predominant global source for atmospheric CH4.