flux-package | R Documentation |
Several functions for the estimation of greenhouse gas (GHG) flux rates using closed chamber concentration measurements. The package follows a modular concept: Fluxes can be calculated in just two simple steps or in several steps if more control is wanted. Functions for further analyses (GPP and Reco model fitting and prediction for budgets including error terms) are also available.
Package: | flux |
Type: | Package |
Version: | 0.3-0 |
Date: | 2014-04-23 |
License: | GPL-2 |
LazyLoad: | yes |
Obtain flux rates from many chamber measurements within minutes. After
preparing the read in data (Field or device measured concentration data on
the three most prominent greenhouse gases) with chop
just
run flux
or fluxx
(for medium frequency data)
on the result returned by chop
and get flux rates in an
easy to interpret table including quality flags.
Plot diagnostic plots as pdf per factor level to a folder or simply to
the screen. Use gpp
to model GPP and reco
to
model ecosystem respiration or use gpp.bulk
to bulk model
GPP and reco.bulk
to bulk model R_eco and
use the resulting objects with budget.gpp
and
budget.reco
, respectively, to predict fluxes using
continuously logged data. Use budget.ie
to estimate the
uncertainty associated with the interpolation between models.
Several helper functions for ghg analysis are also provided.
Gerald Jurasinski <gerald.jurasinski@uni-rostock.de>, Franziska Koebsch <franziska.koebsch@uni-rostock.de>, Ulrike Hagemann <ulrike.hagemann@zalf.de>, Anke Günther <anke.guenther@uni-rostock.de>
Maintainer: Gerald Jurasinski <gerald.jurasinski@uni-rostock.de>
Nakano T (2004) A comparison of regression methods for estimating soil- atmosphere diffusion gas fluxes by a closed-chamber technique. Soil Biology and Biochemistry 36: 107-113.
Forbrich I, Kutzbach L, Hormann A, Wilmking M (2010) A comparison of linear and exponential regression for estimating diffusive CH4 fluxes by closed- chambers in peatlands. Soil Biology and Biochemistry 42: 507-515.
Beetz S, Liebersbach H, Glatzel S, Jurasinski G, Buczko U, Hoper H (2013) Effects of land use intensity on the full greenhouse gas balance in an Atlantic peat bog. Biogeosciences 10:1067-1082.
Koebsch F, Glatzel S, Jurasinski G (2013) Vegetation controls methane emissions in a coastal brackish fen. Wetlands Ecology and Management 21:323–337.
HMR
for a different approach to flux rate estimation from chamber data.
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