SoilR (version 1.1-23)

eCO2: Soil CO2 efflux from incubation experiments

Description

A dataset with soil CO2 efflux measurements in two laboratory incubations at controlled temperature and moisture conditions.

Usage

data(eCO2)

Format

A data frame with the following 4 variables.

Sample

Sample code: AK_T25 is a soil from a boreal forest in Alaska incubated at 25 degrees C. HN_T35 is a soil from a temperate German forest (Hainich National Park) incubated at 35 degrees C.

Days

A numeric vector with the day of measurement.

eCO2mean

A numeric vector with the accumulated release of CO2. Units in mg C g-1 soil C.

eCO2sd

A numeric vector with the standard deviation of the accumulated release of CO2. Units in mg C g-1 soil C.

Details

Two laboratory incubation experiments where performed in April-May 2013 for a period of 42 days. Soil CO2 measurements were taken under controlled laboratory conditions. One soil was sampled at a boreal forest site (Caribou Poker Research Watershed, Alaska, USA) and the other from a temperate forest in Germany (Hainich National Park). For each soil 5 replicates were incubated and sampled. This dataset presents the mean and standard deviation of the measurements.

Examples

head(eCO2)

plot(eCO2mean~Days,data=eCO2,subset=Sample=="HN_T35",col=2)
points(eCO2mean~Days,data=eCO2,subset=Sample=="AK_T25",col=4)
legend("topleft",
       c("HN_T35: temperate forest soil","AK_T25: boreal forest soil"),
       pch=1,col=c(2,4),bty="n")