Temperature and soil moisture effects on the respiration of a grassland area

A.F.G. Jacobs, B.G. Heusinkveld, C.M.J. Jacobs

Research output: Chapter in Book / Report / Conference proceedingChapterAcademicpeer-review

Abstract

In an ecosystem the respiration is affected by many biological and physico-chemical factors, of which year round the soil temperature and soil moisture are the most important ones. During six months in 2003, the net ecosystem exchange (NEE) of CO2 was measured with the eddy-covariance technique along with soil temperature and soil moisture profiles. Nighttime surface respiration measurements were analyzed and compared with model calculations using an Arrhenius relation. Not the soil temperature but the surface temperature of the grass cover, fitted best the experimental data. For dry soil wetness conditions but also for very wet soil water conditions a correction function is introduced, which appears to work well. For the soil wetness correction function, the soil water content nearest to the soil atmosphere interface appeared to work best. © 2008 Nova Science Publishers, Inc. All rights reserved.
Original languageEnglish
Title of host publicationEcosystem Ecology Research Trends
PublisherNOVA Science publishers, Inc.
Pages313-325
Publication statusPublished - 2008
Externally publishedYes

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