Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 316674
Title The carbon uptake of a mid latitude pine forest growing on sandy soil
Author(s) Dolman, A.J.; Moors, E.J.; Elbers, J.A.
Source Agricultural and Forest Meteorology 111 (2002)3. - ISSN 0168-1923 - p. 157 - 170.
Department(s) ALTERRA Wageningen UR
Publication type Refereed Article in a scientific journal
Publication year 2002
Keyword(s) bosecologie - koolstofhuishouding - naaldbos
Abstract Measurements of net ecosystem exchange (NEE) are described over a temperate coniferous forest in the Netherlands. The data show no loss of night-time fluxes at low values of friction velocity. Measurements of concentration profiles show a wide diurnalrange in concentration values (50 ppm) during July in the summer compared to November in the late autumn (10 ppm). This is a result of photosynthetic activity during summer. The profiles also show the effect of respiration in the build up of the night-time profiles. The half-hourly day time NEE shows a relation with incoming short-wave radiation when separate classes of specific humidity deficit are defined. Quantum yield varies from 0.0197 to 0.0375. A linear relation was found between NEE and surface conductance at the ecosystem level. The annual carbon sequestration of the forest in 1997 is 338 g per mr per year. It was estimated that respiration contributed 1221 g C per mr per year to the NEE. This brings the gross primary production (GPP) of this forest to 1559 g C per mr per year. The forest shows a clear growing season (positive uptake) of 249 days, but even during the winter the forest acts as a sink for a few hours around noon.
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