Methodologies

Summary, in English

Measurement of biosphere-atmosphere exchange of various greenhouse gases requires different techniques. In case of carbon dioxide, the net ecosystem exchange (NEE) is usually measured by the eddy covariance method. In the lack of these measurements in forests, the carbon dioxide uptake can be estimated by detecting changes in sequestrated carbon stocks or by using tree growth (dendrometric) measurements. The soil CO₂, CH₄, and N ₂O efflux/exchange rates can be determined using in situ chamber techniques, or laboratory incubation measurements. Static and dynamic, manual and automatic chamber methods, as well as photo-acoustic, gas chromatography, and infrared detections can be used for this purpose. This chapter gives a general overview of the approaches applied in studies presented in this book for evaluating the greenhouse gas exchange between the biosphere and atmosphere.

• Author: Csilla Farkas; Giorgio Alberti; János Balogh; Zoltán Barcza; Márta Birkás; Szilárd Czóbel; Kenneth J. Davis; Erno Führer; Györgyi Gelybó; Balázs Grosz; Natascha Kljun; Sándor Koós; Attila Machon; Hrvoje Marjanović; Zoltán Nagy; Alessandro Peressotti; Krisztina Pintér; Eszter Tóth; László Horváth
• Publishing year: 2011-12-01
• Language: English
• Pages: 65-90
• Publication/Series: Atmospheric Greenhouse Gases : The Hungarian Perspective
• Links: http://dx.doi.org/10.1007/978-90-481-9950-1_5
• Document type: Book chapter
• Publisher: Springer
• Topic: Physical Geography
• Keywords: Eddy covariance; Gas chromatography; Infrared detection; Laboratory incubation; Photo-acoustic detection; Static and dynamic chambers
• Status: Published
• ISBN/ISSN/Other: ISBN: 9789048199495; ISBN: 9789048199501