Biogeochemical cycling in xeric yards
Publication date: 2015-10-07
Bounding Coordinates:
Longitude:-111.58 to -111.52
Latitude:33.26 to 33.19
PO Box 875402,Tempe
Author(s):
- Hannah Heavenrich
Abstract:
Emperical research anayzing the boigeochemical effects of removing a residential turgrass lawn and replacing it with a water efficient landscape. This project also looked at the long term differences between nutrient cycling turfgrass lawns and in water efficient yards that were newly installed as well as those installed between 1-20 years ago. Further, this research considered home-owner management of the front yards and the role management places in biogeochemical processes in these landscapes
Keywords:
nitrogen, nitrogen cycling, nitrification, nitrogen mineralization, nitrate, nutrient cycling, nutrients, urban, organic matter, ammonium, shrubs, soil, soil organic matter, soil properties, soil nitrogen, soil nutrients disturbance patterns, movement of organic matter, movement of inorganic matter cap lter, cap, caplter, central arizona phoenix long term ecological research, arizona, az, arid land
Temporal Coverage:
2014-05-01 to 2015-03-01Geographic Coverage:
Geographic Description: CAP LTER study areaBounding Coordinates:
Longitude:-111.58 to -111.52
Latitude:33.26 to 33.19
Contact:
Data Manager, Julie Ann Wrigley Global Institute of Sustainability, Arizona State University,PO Box 875402,Tempe
Methods used in producing this dataset: Show
Data Files (3) :
Tabular: nitrogenPools
Description: urban yard vegetation characteristics and standing stocks of nitrogen
Column | Description | Type | Units |
---|---|---|---|
id | UniqueID number, per house |
||
NO3gm2 | NO2+NO3 Ng per gram of dry soil/m2, extracted in KCl (gN/gsoil/m2) |
gramsPerSquareMeter | |
totalInterplantArea | total interplant area |
squareMeter | |
totalUnderplantArea | total under plant area |
squareMeter | |
totalAreaUnderTree | total area under tree |
squareMeter | |
totalAreaNotUnderTrees | total area not under trees |
squareMeter | |
totalAreaUnderShrubs | total area under shrubs |
squareMeter | |
totalAreaNotUnderShrubs | total area not under shrubs |
||
totalNInterplant | NO2+NO3 N per gram of dry soil/m2, in the interplant space (gN/gSoil/m2) |
gramPerGramPerMeterSquared | |
totalNUnderplant | NO2+NO3 N per gram of dry soil/m2, in the underplant space (gN/gSoil/m2) |
gramPerGramPerMeterSquared | |
totalNUnderTrees | NO2+NO3 N per gram of dry soil/m2, in the space under tree canopy (gN/gSoil/m2) |
gramPerGramPerMeterSquared | |
totalNNotUnderTrees | NO2+NO3 N per gram of dry soil/m2, in the space not under a tree's canopy (gN/gSoil/m2) |
gramPerGramPerMeterSquared | |
totalNUnderShrubs | NO2+NO3 N per gram of dry soil/m2, in space under shrubs (gN/gSoil/m2) |
gramPerGramPerMeterSquared | |
totalNNotUnderShrubs | NO2+NO3 N per gram of dry soil/m2, in space not under shrubs (gN/gsoil/m2) |
gramPerGramPerMeterSquared |
Tabular: resinData
Description: urban yard history, landscaping style, and irrigation characteristics, and resin-derived nitrogen pool assessments
Column | Description | Type | Units |
---|---|---|---|
id | UniqueID number, per house |
||
deployment | 1 = first dployment in first part of summer, 2=second deployment, middle of summer into fall |
Enumeration:
|
|
location | Patchtype, I=interplant, u=underplant |
Enumeration:
|
|
depth | 1=0-10cm- under surface of soil. 2=~30cm depths, in PVC tube installation |
Enumeration:
|
|
precipiation | amount of precipitation received for each location for each deployment length, in cm. |
centimeter | |
ugNO3NO2ngresin | NO3+NO2-N in g of resin (gN/gResin/day) |
gramPerGramPerDay | |
ugNH4ngresin | NH4-N in g of resin (gN/gResin/day) |
gramPerGramPerDay | |
yearSince | Years since conversion from turgrass |
number | |
yearCategory | 1-converted between 1993-1996. 2-converted between 2001-2006, 3-converted between 2007-2009, 4-converted between 2010-2013 |
Enumeration:
|
|
landscapeType | 1=xeric, 2=mesic |
Enumeration:
|
|
irrigationScore | 0=never 1=seasonally, 2=monthly, 3=weekly, 4=daily |
Enumeration:
|
|
irrigationFrequency | 1= irrigation scores 0-2, 2= irrigation scores 3-4 |
Enumeration:
|
|
plasticPresent | Presence of plastic sheeting under mulch or first few cm of soil (excludes fabric sheeting or weed-block) |
Enumeration:
|
Tabular: soilData
Description: urban yard soil properties, landscaping history and style, vegetation characteristics, standing stocks of nitrogen, and estimates of rates of nitrogen cycling
Column | Description | Type | Units |
---|---|---|---|
id | UniqueID number, per house |
||
conversionYear | Year yard was changed from turfgrass to xeric |
nominalYear | |
yearSince | Years since conversion from turgrass |
number | |
location | I=interplant, U=underplant |
Enumeration:
|
|
depth | 0=0-15cm, 15=15-30cm, 30=30-45cm |
Enumeration:
|
|
clay | % clay using hydrometer method |
dimensionless | |
silt | % silt using hydrometer method |
dimensionless | |
sand | % sand using hydrometer method |
dimensionless | |
CNratio | Ratio of C:N- found using CHN analyzer |
dimensionless | |
gravimetricSM | percent of water in soil (g water/ gram soil) |
dimensionless | |
WHC | Water holding capacity at 100% (gH2O/gSoil) |
dimensionless | |
organicMatter | organic matter found by subtracting post-ash weight from pre-ash weight [550 deg C, 240 min] (gOrganicMatter/gSoil) |
dimensionless | |
NO3gm2For15cm | NO2+NO3 N per gram of dry soil.m2, etracted in KCl (gN/gSoil/m2) |
gramPerGramPerMeterSquared | |
NH4gm2For15cm | NH4 N per gram of dry soil/m2, etracted in KCl (gN/gSoil/m2) |
gramPerGramPerMeterSquared | |
netNMin | Net N Mineralization per gram per day (gN/gSoil/day) |
gramPerGramPerDay | |
netNit | Net N nitrification per gram per day (gN/gSoil/day) |
gramPerGramPerDay | |
netAmmonification | Net Ammonification, total change in NH4 (gN/gSoil/day) |
gramPerGramPerDay | |
yearCategory | 1-converted between 1993-1996. 2-converted between 2001-2006, 3-converted between 2007-2009, 4-converted between 2010-2013 5-turfgrass |
Enumeration:
|
|
landscapeType | 1=xeric, 2=mesic |
Enumeration:
|
|
irrigationScore | Irrigation by homeowner, either hose, sprinkler on hose, in-ground sprinkler, or drip-irrigation (also flood irrigation for 3 of the mesic houses) |
Enumeration:
|
|
irrigationFrequency | 1= irrigation scores 0-2, 2= irrigation scores 3-4 |
Enumeration:
|
|
plasticPresent | Presence of plastic sheeting under mulch or first few cm of soil (excludes fabric sheeting or weed-block) |
Enumeration:
|
|
totalShrub | percent of yard covered by vegetation other than trees or cacti |
dimensionless | |
totalCanopy | percent cover of all vegetation >1.5m excluding cacti |
dimensionless | |
canopyCoverOfNfixer | canopy cover in % (% of area of whole front yards, including impervious surfaces) of Trees that have N-fixing symbiosis, and therefore may be putting additional N into the soil |
dimensionless | |
rootNO3 | the transformed NO3gm2For15cm: it is (NO3 value) to the negative 1/2 exponent ((NO3+1)^-(1/2)) |
gramsPerSquareMeter | |
logNO3 | the transformed NO3gm2For15cm: it is log(NO3+1) |
gramsPerSquareMeter |