Soil aggregate size distribution and particulate organic matter content from Arctic LTER moist acidic tundra nutrient addition plots, Toolik Field Station, Alaska, sampled July 2011.
Variables
Block
- Label: Block
- Definition: Arctic LTER blocks
- Type: Nominal
- Missing values: None specified
Plot Array
- Label: Plot Array
- Definition: Distinguished between 1989 and 2006 plots
- Type: Nominal
- Missing values: None specified
Treatment
- Label: Treatment
- Definition: Control vs +NP treatments for each plot array
- Type: Code list
- Codes:
- 1989 +NP = Fertilization treatment since 1989 | 2006 Low+NP = Low fertilization treatment since 2006 | 2006 High+NP = High fertilization treatment since 2006
- Missing values: None specified
% >2000mm
- Label: % >2000mm
- Definition: % >2000mm
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
% 250-2000mm
- Label: % 250-2000mm
- Definition: % 250-2000mm
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
% 53-250mm
- Label: % 53-250mm
- Definition: % 53-250mm
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
% <53mm
- Label: % <53mm
- Definition: % <53mm
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
% of small macroaggregate >250mm
- Label: % of small macroaggregate >250mm
- Definition: % small macroaggregate mass in >250mm subfraction
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
% of small macroaggregate 53-250mm
- Label: % of small macroaggregate 53-250mm
- Definition: % of small macroaggregate mass in occluded microaggregate fraction
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
% of small macroaggregate <53mm
- Label: % of small macroaggregate <53mm
- Definition: % of small macroaggregate mass in <53mm fraction
- Type: Physical quantity
- Unit: percent
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
Total g light fraction/g small macroaggregate
- Label: Total g light fraction/g small macroaggregate
- Definition: Total g light fraction/g small macroaggregate
- Type: Physical quantity
- Unit: gramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
Total g <53mm g small macroaggregate
- Label: Total g <53mm g small macroaggregate
- Definition: Total g <53mm g small macroaggregate
- Type: Physical quantity
- Unit: gramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg C/g >2000 mm fraction
- Label: mg C/g >2000 mm fraction
- Definition: mg C/g >2000 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg C/g 250-2000 mm fraction
- Label: mg C/g 250-2000 mm fraction
- Definition: mg C/g 250-2000 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg C/g 53-250 mm fraction
- Label: mg C/g 53-250 mm fraction
- Definition: mg C/g 53-250 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg C/g <53 mm fraction
- Label: mg C/g <53 mm fraction
- Definition: mg C/g <53 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg N/g >2000 mm fraction
- Label: mg N/g >2000 mm fraction
- Definition: mg N/g >2000 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg N/g 250-2000 mm fraction
- Label: mg N/g 250-2000 mm fraction
- Definition: mg N/g 250-2000 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg N/g 53-250 mm fraction
- Label: mg N/g 53-250 mm fraction
- Definition: mg N/g 53-250 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg N/g <53 mm fraction
- Label: mg N/g <53 mm fraction
- Definition: mg N/g <53 mm fraction
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg C/g occluded microaggregate
- Label: mg C/g occluded microaggregate
- Definition: mg C/g occluded microaggregate within small macroaggregate
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg N/g occluded microaggregate
- Label: mg N/g occluded microaggregate
- Definition: mg N/g occluded microaggregate within small macroaggregate
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg LF C/g LF
- Label: mg LF C/g LF
- Definition: mg LF C/g LF
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg small macroaggregate <53 C/g <53
- Label: mg small macroaggregate <53 C/g <53
- Definition: mg small macroaggregate <53 C/g <53
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg LF C/g small macroaggregate
- Label: mg LF C/g small macroaggregate
- Definition: mg LF C/g small macroaggregate
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg <53 C/g small macroaggregate
- Label: mg <53 C/g small macroaggregate
- Definition: mg <53 C/g small macroaggregate
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing
mg iPOM C/g small macroaggregate
- Label: mg iPOM C/g small macroaggregate
- Definition: mg iPOM C/g small macroaggregate
- Type: Physical quantity
- Unit: milligramPerGram
- Maximum: Not specified
- Minimum: Not specified
- Precision: Not specified
- Missing values:
- -9999 = missing