| Title: |
Net Nitrogen Mineralization Rates for Mature Balsam Poplar and White Spruce: 1999 - 2001
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| Contacts: |
Boone, Richard
Brenner, Richard
|
| Abstract: |
This data set includes results (DIN and DON pools, %C, %N, net nitrogen mineralization, net ammonification, net nitrification, etc) from a multi-year buried soil core (intact core) incubation study in control and fertilized plots of balsam poplar and white spruce along the Tanana River Floodplain. The study began in 1999 and continued until early 2001.
Soil cores were incubated monthly but were also incubated during the winters of 1999-2000 and 2000-2001.
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| Keywords: |
Buried bag, floodplain, intact core, net nitrification, nitrogen mineralization, |
| Categories: |
Biogeochemistry
Soils
Succession
|
| Study Period: |
Aug 1, 1999 to Oct 31, 2001
|
| Bounding Box: |
West longitude: -148.32683°
North latitude: 64.67834557°
East longitude: -148.2321322°
South latitude: 64.66966°
|
| Site References: |
BP1 -- True balsam poplar stand on the Tanana River floodplain within Bonanza Creek Experimental Forest, Fairbanks, Alaska, USA. Vegetation structure for these sites includes a closed canopy of mature (>100 yrs old) balsam poplar with a dense thin-leaf alder (Alnus
tenuifolia) understory. Basal area for stems larger than 5 cm averages
36.7 m2 ha-1 and 1.8 m2 ha-1 for balsam poplar and alder, respectively, with densities for poplar ranging from 567 to 922 stems ha-1 among the three stands. Total litterfall averaged 279 g m-2 y-1 across the three stands during the 1998–99 growing season. Rose (Rosa acicularis) and high-bush cranberry (Viburnum edule) are prominent within the shrub layer, filling understory canopy gaps previously occupied by decadent alder shrubs. Average daily soil temperatures measured at a depth of 7 cm during the 1998 growing season ranged from a minimum of 3.8°C in May to a maximum of 11.4°C in late July. The soil, classified as typic cryofluvent, consists of an alluvium of fine to medium sand grains overlain by a well-developed organic profile extending to more than 8 cm in some places.
Soil C:N ratios average 19.0 for the organic layer and 16.0 for the mineral soil.
BP2 -- True balsam poplar stand on the Tanana River floodplain within Bonanza Creek Experimental Forest, Fairbanks, Alaska, USA. Vegetation structure for these sites includes a closed canopy of mature (>100 yrs old) balsam poplar with a dense thin-leaf alder (Alnus
tenuifolia) understory. Basal area for stems larger than 5 cm averages
36.7 m2 ha-1 and 1.8 m2 ha-1 for balsam poplar and alder, respectively, with densities for poplar ranging from 567 to 922 stems ha-1 among the three stands. Total litterfall averaged 279 g m-2 y-1 across the three stands during the 1998–99 growing season. Rose (Rosa acicularis) and high-bush cranberry (Viburnum edule) are prominent within the shrub layer, filling understory canopy gaps previously occupied by decadent alder shrubs. Average daily soil temperatures measured at a depth of 7 cm during the 1998 growing season ranged from a minimum of 3.8°C in May to a maximum of 11.4°C in late July. The soil, classified as typic cryofluvent, consists of an alluvium of fine to medium sand grains overlain by a well-developed organic profile extending to more than 8 cm in some places.
Soil C:N ratios average 19.0 for the organic layer and 16.0 for the mineral soil.
BP3 -- True balsam poplar stand on the Tanana River floodplain within Bonanza Creek Experimental Forest, Fairbanks, Alaska, USA. Vegetation structure for these sites includes a closed canopy of mature (>100 yrs old) balsam poplar with a dense thin-leaf alder (Alnus
tenuifolia) understory. Basal area for stems larger than 5 cm averages
36.7 m2 ha-1 and 1.8 m2 ha-1 for balsam poplar and alder, respectively, with densities for poplar ranging from 567 to 922 stems ha-1 among the three stands. Total litterfall averaged 279 g m-2 y-1 across the three stands during the 1998–99 growing season. Rose (Rosa acicularis) and high-bush cranberry (Viburnum edule) are prominent within the shrub layer, filling understory canopy gaps previously occupied by decadent alder shrubs. Average daily soil temperatures measured at a depth of 7 cm during the 1998 growing season ranged from a minimum of 3.8°C in May to a maximum of 11.4°C in late July. The soil, classified as typic cryofluvent, consists of an alluvium of fine to medium sand grains overlain by a well-developed organic profile extending to more than 8 cm in some places.
Soil C:N ratios average 19.0 for the organic layer and 16.0 for the mineral soil.
FP4A -- Mature white spruce
FP4B -- Mature white spruce
FP4C -- Mature white spruce
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| Data Columns: |
| Column |
Name |
Units |
Type |
| 1 |
Incubation Period |
|
|
| 2 |
Plot Name |
|
|
| 3 |
REP |
|
|
| 4 |
Numeric Period |
|
|
| 5 |
Treatment |
|
|
| 6 |
Stand Type |
|
|
| 7 |
SITE |
|
|
| 8 |
SUBPLOT |
none |
integer |
| 9 |
Depth |
|
|
| 10 |
T0 collection date |
|
|
| 11 |
T30 extraction date |
|
|
| 12 |
Total Days in Incubation |
|
|
| 13 |
T0 Soil Moisture Content: (fraction of dry mass) |
|
|
| 14 |
T30 Soil Moisture Content: (fraction of dry mass) |
|
|
| 15 |
T0 ug NO3-N/g dry soil |
micrograms |
float |
| 16 |
T30 ug NO3-N/g dry soil |
micrograms |
float |
| 17 |
T0 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) |
micrograms |
float |
| 18 |
T0 mg NO3-N/m^2: (= ugN/gdrysoil*(1/1000)) |
micrograms |
float |
| 19 |
T30 ug NO3-N/m^2: (= ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2)) |
micrograms |
float |
| 20 |
Net Nitrification Rate ugNO3-N/m^2/day: (= (T30-T0)/days from T0 collection to T30 extraction) |
micrograms |
float |
| 21 |
Net Nitrification Rate in mg NO3-N/m^2/day |
micrograms |
float |
| 22 |
Net Nitrification Rate in ugNO3-N/gdrysoil/day |
micrograms |
float |
| 23 |
Total mgNO3-N produced/m2 for entire period |
micrograms |
float |
| 24 |
Total ug NO3-N produced/g dry soil for entire period |
micrograms |
float |
| 25 |
T0 ug NH4-N/g dry soil |
micrograms |
float |
| 26 |
T30 ug NH4-N/g dry soil |
micrograms |
float |
| 27 |
T0 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (note: there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 28 |
T0 mg NH4-N/m^2= ugN/gdrysoil*(1/1000) |
micrograms |
float |
| 29 |
T30 ug NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 30 |
Net Ammonification Rate ugNH4-N/m^2/day = (T30-T0)/days from T0 collection to T30 extraction |
micrograms |
float |
| 31 |
Net Ammonification Rate in mg NH4-N/m^2/day |
micrograms |
float |
| 32 |
Net Ammonification Rate in ugNH4-N/gdrysoil/day |
micrograms |
float |
| 33 |
Total mgNH4-N produced /m2 for entire period |
micrograms |
float |
| 34 |
Total ug NH4-N produced/g dry soil for entire period |
micrograms |
float |
| 35 |
T0 ug NO3-N+NH4-N/g dry soil = ugN/gdrysoil |
micrograms |
float |
| 36 |
T30 ug NO3-N+NH4-N/g dry soil |
micrograms |
float |
| 37 |
T0 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 38 |
T0 mg NO3-N+NH4-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 39 |
T30 ug NO3-N+NH4-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 40 |
Net Mineralization Rate ugNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction |
micrograms |
float |
| 41 |
Net Mineralization Rate in mgNH4-N+NO3-N/m^2/day = (T30-T0)/days from T0 to extraction |
micrograms |
float |
| 42 |
Net mineralization Rate in ug NO3-N+NH4-N/gdrysoil/day |
micrograms |
float |
| 43 |
Total mg NH4-N+NO3-N/m2 produced per period |
micrograms |
float |
| 44 |
Total ug NO3-N+NH4-N/gdry soil produced per period |
micrograms |
float |
| 45 |
T0 ug DON-N/g dry soil |
micrograms |
float |
| 46 |
T30 ug DON-N/g dry soil |
micrograms |
float |
| 47 |
T0 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 48 |
T0 mg DON-N/m^2 = ugN/gdrysoil*(1/1000)*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 49 |
T30 ug DON-N/m^2 = ugN/gdrysoil*bulkdensity*10,000*length of core (there are 10,000 cm^2 in 1m^2) |
micrograms |
float |
| 50 |
Net DON Production Rate ugDON-N/m^2/day = (T30-T0)/days from T0 to extraction |
micrograms |
float |
| 51 |
Net DON Production Rate mgDON-N/m^2/day = (T30-T0)/days from T0 to extraction |
micrograms |
float |
| 52 |
ug DON-N/gdry soil/day |
micrograms |
float |
| 53 |
Total mg DON-N/m2 produced during entire incubation period |
micrograms |
float |
| 54 |
Total ug DON-N/g dry soil produced during entire incubation period |
micrograms |
float |
| 55 |
% Carbon (%of air dried soil mass) |
percent |
float |
| 56 |
% Nitrogen (%of air dried soil mass) |
percent |
float |
| 57 |
Soil C:N ratio |
ratio |
float |
| 58 |
mg totalC/g105C dry soil |
micrograms |
float |
| 59 |
mg TotalN/g105C dry soil |
micrograms |
float |
| 60 |
g TotalC/m2 |
grams |
float |
| 61 |
g Total N/m2 |
grams |
float |
|
| Data File(s): |
200_1735_Floodplain_LTER_Net_N_Mineralization.txt.csv
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| Supplemental Files: |
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| Metadata Formats: |
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| Public Release: |
Oct 23, 2003
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| Publications: |
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The Bonanza Creek LTER, including this website, is supported by the
National Science Foundation through awards
DEB-0620579,
DEB-0423442,
DEB-0080609,
DEB-9810217,
DEB-9211769,
DEB-8702629
and by the USDA Forest Service, Pacific Northwest Research Station through agreement number RJVA-PNW-01-JV-11261952-231.
Any opinions, findings, conclusions, or recommendations expressed in the
material are those of the author(s) and do not necessarily reflect
the views of the supporting agencies or the program as a whole.
© Bonanza Creek LTER, 2009.
Last modified 22-Nov-09
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This site is a member of the LTER Network.
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