uid=HFR,o=lter,dc=ecoinformatics,dc=org
all
public
read
doi:10.6073/pasta/76f56ccb5856b31245945449894cbabf
Partitioning the Components of Soil Respiration in a Trenching Experiment at Harvard Forest 2011
Jim
Tang
https://orcid.org/0000-0003-2498-9012
2023
English
Total soil respiration (Rt) is a combination of autotrophic (Ra) and heterotrophic respiration (Rh). We used a trenching method to sever the rooting system surrounding a plot to remove the Ra component within the plot. We used a custom-made automated chamber system to measure soil respiration within the trenched plot and the control in an oak dominated forest with the footprint of the LPH tower. This method has some potential limitations. Reduced water uptake in trenched plots could change soil water content, which is one of the environmental controllers of Rt in many ecosystems. Eliminating root inputs could reduce heterotrophic decomposition of SOM via lack of priming.
carbon cycling
roots
soil respiration
soil temperature
LTER controlled vocabulary
inorganic nutrients
LTER core area
Harvard Forest
HFR
LTER
USA
HFR default
This dataset is released to the public under Creative Commons CC0 1.0 (No Rights Reserved). Please keep the dataset creators informed of any plans to use the dataset. Consultation with the original investigators is strongly encouraged. Publications and data products that make use of the dataset should include proper acknowledgement.
Creative Commons Zero v1.0 Universal
https://spdx.org/licenses/CC0-1.0.html
CC0-1.0
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf284
Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum.
-72.185
-72.180
+42.542
+42.539
355
380
meter
2011
2011
complete
Information Manager
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
hf-im@lists.fas.harvard.edu
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
(978) 724-3595
https://harvardforest.fas.harvard.edu
Within the footprint of the LPH eddy covariance tower, automated respiration chambers were utilized in conjunction with a trenching method to partition soil respiration (Rs) into its components, heterotrophic respiration (Rh) and autotrophic respiration (Ra). In the late fall of 2008, a trench was dug (to 1m depth) around a 5x5m area, severing all roots leading into the treatment plot. Plastic tarp was placed along the walls of the trench and then backfilled. Three automated chambers were placed in each of the trenched and un-trenched plots. Soil respiration, along with soil temperature and moisture, were measured at half-hour to hourly rates. Measurements from the non-trenched plot represent the combined Rh and Ra components. Fluxes from the trenched plot represent Rh and the difference (Rs-Rh) represents Ra.
In the data for 2011, the measurement frequency changed from half-hourly to hourly on 2011-08-23T13:30. Soil temperature for heterotrophic respiration (soilt.rh) and heterotrophic respiration (rh) were modeled for the periods 2011-06-16T11:20 to 2011-06-28T16:50 and 2011-07-21T11:15 to 2011-08-23T15:30. Soil temperature for total soil respiration (soilt.rs) and total soil respiration (rs) were modeled for the periods 2011-06-16T16:50 to 2011-06-28T16:50 and 2011-07-21T11:15 to 2011-08-23T18:30.
Harvard Forest Long-Term Ecological Research
Harvard Forest
324 North Main Street
Petersham
MA
01366
USA
(978) 724-3302
(978) 724-3595
https://harvardforest.fas.harvard.edu
https://ror.org/059cpzx98
pointOfContact
The Harvard Forest Long-Term Ecological Research (LTER) program examines ecological dynamics in the New England region resulting from natural disturbances, environmental change, and human impacts.
National Science Foundation LTER grants: DEB-8811764, DEB-9411975, DEB-0080592, DEB-0620443, DEB-1237491, DEB-1832210.
hf284-01-soil-resp-2011.csv
soil respiration
hf284-01-soil-resp-2011.csv
617040
0e95cf88aeadd46f1f4c7373e6474e27
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p28/hf284/hf284-01-soil-resp-2011.csv
datetime
date and time of measurement
YYYY-MM-DDThh:mm
1 minute
NA
missing value
doy
day of year in 2011
nominalDay
0.0001
real
NA
missing value
soilt.rh
soil temperature at 10 cm depth for heterotrophic
respiration
celsius
0.0001
real
NA
missing value
rh
heterotrophic respiration
micromolePerMeterSquaredPerSecond
0.0001
real
NA
missing value
soilt.rs
soil temperature at 10 cm depth for total soil
respiration
celsius
0.0001
real
NA
missing value
rs
total soil respiration
micromolePerMeterSquaredPerSecond
0.0001
real
NA
missing value
ra
autotrophic respiration
micromolePerMeterSquaredPerSecond
0.000000001
real
NA
missing value
8677
soil
long-term measurement
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf243