Description Usage Format Details Source Examples
Contains parameters describing vegetated filter strips for use in VFS modeling.
1 | data("bufferdat")
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A data frame with 2 observations on the following 3 variables.
Species
Type of buffer
bg
Average stem spacing (cm)
n
Manning's roughness coefficient (s m^(-1/3))
Currently contains data for a cool-season and a warm-season grass buffer.
Haan CT, Barfield BJ, Hayes JC (1994) Design hydrology and sedimentology for small catchments. Acad. Press, San Diego
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# state college GHCN data
#
# weather <- read.dly(system.file("extdata", "USC00368449.dly", package = "VFS"))
data("weather") # same object
weather.param <- wth.param(weather, method="markov")
rain.compare <- rainfall(365*2, weather.param)
temp.compare <- temperature(365*2, weather.param)
data(soildat)
data(bufferdat)
# bluegrass buffer, clay loam soil
# short simulation to cut down on time required
vfs.CL <- VFS(nyears = 2, thissoil = subset(soildat, Soil == "CL"),
rain=rain.compare, temperature=temp.compare,
thisbuffer = subset(bufferdat, Species == "bluegrass"), Duration = 2,
FieldArea = 4000, VFSwidth = 10.7, VFSslope = 0.02,
z = 1000, b = 1.5)
print(vfs.CL)
summary(vfs.CL)
aple.CL <- VFSAPLE(vfs.CL, soilP = 120, OM = 2)
print(aple.CL)
summary(aple.CL)
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