University of Minnesota
University of Minnesota
College of Biological Sciences
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Nitrogen Addition and Dynamics of Recovery from Cessation of N Addition - Experiment 097


Soil nitrate and ammonium

Years Available: 1985 - 2002

Principle Investigators

Tilman, David

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ATTRIBUTES

FieldNameDefinitionUnitCode
1Field letterField number/letter
2Plot numberPlot number
3Sampling dateDate of collection
4NtrtNitrogen treatment1= 0.0 g/m20 ml, 2= 1.5 g/m225 ml, 3= 3.0 g/m250 ml, 4= 5.0 g/m290 ml, 5= 8.0 g/m2140 ml, 6= 14.0 g/m2250 ml, 7= 25.0 g/m2445 ml, 8= 40.0 g/m2710 ml, 9= 0.0 g/m20 ml
5NAdd(g/m2/yr)Nitrogen Added to PlotgramsPerMeterSquaredPerYear
6NtrtReceivedThe plot received nitrogen treatment this year1=yes, 0=no
7NO3 in soil (mg/kg)NO3 in soil (mg/kg)milligramPerKilogram
8NH4 in soil (mg/kg)NH4 in soil (mg/kg)milligramPerKilogram
 

SAMPLE DATASET

Field number/letterPlot numberSampling dateNtrtNAdd(g/m2/yr)NtrtReceivedNO3 in soil (mg/kg)NH4 in soil (mg/kg)
C11985-09-2051611.6482.978
C21985-09-2062812.3062.906
C31985-09-2041011.1782.583
C41985-09-2075014.1062.922
C51985-09-2088015.4065.099
C61985-09-2051611.5922.925
C71985-09-2062811.6722.283
C81985-09-2051612.8015.411
C91985-09-209011.6432.133
C101985-09-201012.0834.932
C111985-09-2041012.7986.365
C121985-09-2088016.563.175
        

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Nitrogen Addition and Dynamics of Recovery from Cessation of N Addition: Soil nitrate and ammonium

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