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  Biogenic NO emissions from forest and pasture soils: Relating laboratory studies to field measurements

van Dijk, S. M., Gut, A., Kirkman, G. A., Meixner, F. X., Andreae, M. O., & Gomes, B. M. (2002). Biogenic NO emissions from forest and pasture soils: Relating laboratory studies to field measurements. Journal of Geophysical Research, 107(D20): 8058. doi:10.1029/2001JD000358.

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Genre: Journal Article
Alternative Title : J. Geophys. Res.

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 Creators:
van Dijk, S. M.1, Author           
Gut, A.1, Author           
Kirkman, G. A.1, Author           
Meixner, F. X.1, Author           
Andreae, M. O.1, Author           
Gomes, B. M., Author
Affiliations:
1Biogeochemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826286              

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Free keywords: nitric oxide; biogenic emission; biosphere-atmosphere exchange; rainforest; pasture; Amazonia
 Abstract: During September and October 1999, dynamic chamber measurements were carried out to determine nitric oxide (NO) fluxes from a primary forest soil and an old pasture in the Brazilian Amazon basin as part of the project "European Studies of Trace Gases and Atmospheric Chemistry as a Contribution to the Large-Scale Biosphere-Atmosphere Experiment in Amazonia" (LBA-EUSTACH). In addition, soil samples were collected from these two sites, and laboratory experiments were conducted to determine the NO production and consumption rate constants as functions of soil temperature and soil moisture. These laboratory results were converted into NO fluxes using a simple algorithm, which required additional information on the gas diffusion in soil, the soil bulk density, and the field conditions (soil temperature and soil moisture). Over the entire measurement period, the calculated and measured NO fluxes agreed well both for the forest (6.9 +/- 2.9 and 5.0 +/- 4.6 ng m(-2) s(-1), respectively) and for the pasture (0.67 +/- 0.09 and 0.65 +/- 0.37 ng m(-2) s(-1), respectively). Forest to pasture conversion decreased NO production and gas diffusion and resulted in smaller NO fluxes from pasture than forest soil.

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Language(s): eng - English
 Dates: 2002-09
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 18292
ISI: 000180466200015
DOI: 10.1029/2001JD000358
 Degree: -

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Title: Journal of Geophysical Research
  Alternative Title : J. Geophys. Res.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 107 (D20) Sequence Number: 8058 Start / End Page: - Identifier: ISSN: 0747-7309