uid=HFR,o=lter,dc=ecoinformatics,dc=org
all
public
read
doi:10.6073/pasta/3b5717fff1d5cf6f8d97cf960cd46f08
Partitioning the Components of Soil Respiration in a Trenching Experiment at Harvard Forest 2009-2010
Jim
Tang
https://orcid.org/0000-0003-2498-9012
Kathleen
Savage
https://orcid.org/0000-0002-1649-5314
Eric
Davidson
https://orcid.org/0000-0002-8525-8697
2023
English
Total soil respiration (Rt) is a combination of autotrophic (Ra) and heterotrophic respiration (Rh). Several methods have been developed to tease out the components of Rt, such as isotopic analyses, and removing Ra input through tree girdling and root exclusion experiments. Trenching involves severing the rooting system surrounding a plot to remove the Ra component within the plot. 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. On the other hand, the severed dead roots may temporarily increase available carbon substrate for Rh. We utilized the trenching method to partition the autotrophic and heterotrophic components of soil respiration in an oak dominated forest with the footprint of the LPH tower.
carbon cycling
roots
soil moisture
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=hf243
Prospect Hill Tract (Harvard Forest). Coordinates based on WGS84 datum.
-72.185
-72.180
+42.542
+42.539
355
380
meter
2009
2010
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
Automated Chamber Respiration
Within the footprint of the LPH eddy covariance tower, automated respiration chambers were utilized in conjunction with the trenching method to partition Rt into its components, Rh and 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 plot. Fluxes, along with soil temperature and moisture, were measured at hourly rates from early spring through late fall of 2009 and 2010. Measurements from the non-trenched plot represent the combined Rh and Ra components, Rt. Fluxes from the trenched plot represent, Rh and the difference (Rt-Rh) represents Ra.
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.
hf243-01-soil-respiration.csv
soil respiration
hf243-01-soil-respiration.csv
5097002
1c45bedebf1413458f7f11221f77451f
1
\r\n
column
,
https://harvardforest.fas.harvard.edu/data/p24/hf243/hf243-01-soil-respiration.csv
datetime
date and time
YYYY-MM-DDThh:mm
1 minute
NA
missing value
year
year
YYYY
1 year
NA
missing value
doy
day of year
nominalDay
1
natural
NA
missing value
time
time
hh:mm
1 minute
NA
missing value
doy.time
day of year, time
nominalDay
0.0000001
real
NA
missing value
carbon.flux
carbon flux
milligramPerMeterSquaredPerHour
0.01
real
NA
missing value
treatment
treatment
T
trenched
C
control
NA
missing value
soil.temp.10
soil temperature at 10 cm
celsius
0.1
real
NA
missing value
soil.mois.2.8
percent soil moisture at 2-8 cm
dimensionless
0.1
real
NA
missing value
soil.mois.8.16
percent soil moisture at 8-16 cm
dimensionless
0.1
real
NA
missing value
airt.temp
air temperature
celsius
0.01
real
NA
missing value
72000
atmosphere
short-term measurement
https://harvardforest.fas.harvard.edu/exist/apps/datasets/showData.html?id=hf194
milligramPerMeterSquaredPerHour