Estimate the potential to contribute to agronomic and environmental challenges in a region for a farm and assess the impact of farm measures taken. A high BBWP score is indicative for the number of opportunities to improve soil quality and land use.
Usage
bbwp(
B_SOILTYPE_AGR,
B_LU_BBWP,
B_GWL_CLASS,
B_SC_WENR,
B_HELP_WENR,
B_SLOPE = NULL,
B_SLOPE_DEGREE = NULL,
B_AER_CBS,
A_CLAY_MI,
A_SAND_MI,
A_SILT_MI,
A_SOM_LOI,
A_N_RT,
A_FE_OX,
A_AL_OX,
A_P_CC,
A_P_AL,
A_P_WA,
A_P_SG,
B_GWP,
B_AREA_DROUGHT,
B_CT_PSW,
B_CT_NSW,
B_CT_PSW_MAX = 0.5,
B_CT_NSW_MAX = 5,
D_SA_W,
D_RO_R,
B_AREA,
M_DRAIN,
B_LSW_ID,
LSW = NULL,
measures,
sector,
output = "scores",
penalty = TRUE,
B_LS_HYDROCAT = NULL
)Arguments
- B_SOILTYPE_AGR
(character) The type of soil, using agronomic classification
- B_LU_BBWP
(character) The BBWP category used for allocation of measures to BBWP crop categories
- B_GWL_CLASS
(character) The groundwater table class
- B_SC_WENR
(integer) The risk for subsoil compaction as derived from risk assessment study of Van den Akker (2006). Options include: 1,2,3,4,5,10,11,401,901 and 902.
- B_HELP_WENR
(character) The soil type abbreviation, derived from 1:50.000 soil map
- B_SLOPE
(boolean) DEPRECATED, use B_SLOPE_DEGREE instead. Is the slope of the field, steeper than 3%?
- B_SLOPE_DEGREE
(numeric) The slope of the field (degrees)
- B_AER_CBS
(character) The agricultural economic region in the Netherlands (CBS, 2016)
- A_CLAY_MI
(numeric) The clay content of the soil (%)
- A_SAND_MI
(numeric) The sand content of the soil (%)
- A_SILT_MI
(numeric) The silt content of the soil (%)
- A_SOM_LOI
(numeric) The organic matter content of the soil (%)
- A_N_RT
(numeric) The organic nitrogen content of the soil (mg N / kg)
- A_FE_OX
(numeric) The aluminium content of soil (mmol / kg)
- A_AL_OX
(numeric) The iron content of soil (mmol / kg)
- A_P_CC
(numeric) The plant available P content, measured via 0.01M CaCl2 extraction (mg / kg)
- A_P_AL
(numeric) The plant extractable P content, measured via ammonium lactate extraction (mg / kg)
- A_P_WA
(numeric) The P-content of the soil extracted with water (mg P2O5 / L)
- A_P_SG
(numeric) The P-saturation index (%)
- B_GWP
(boolean) is the field located in a groundwater protected area (options: TRUE or FALSE)
- B_AREA_DROUGHT
(boolean) is the field located in an area with high risks for water deficiencies (options: TRUE or FALSE)
- B_CT_PSW
(numeric) the critical target for required reduction in P loss from agriculture (kg P / ha) to reach targets of KRW
- B_CT_NSW
(numeric) the critical target for required reduction in N loss from agriculture (kg N / ha) to reach targets of KRW
- B_CT_PSW_MAX
(numeric) the max critical target for P reduction loss (kg P / ha)
- B_CT_NSW_MAX
(numeric) the max critical target for N reduction loss (kg N / ha)
- D_SA_W
(numeric) The wet perimeter index of the field, fraction that field is surrounded by water
- D_RO_R
(numeric) The risk that surface water runs off the parcel
- B_AREA
(numeric) the area of the field (m2)
- M_DRAIN
(boolean) is there tube drainage present in the field
- B_LSW_ID
(character) An unique identifier for each Local Surface Water per field
- LSW
(data.table) The averaged soil properties (mean and sd) per Local Surface Water. Can be derived from bbwp_lsw_properties.
- measures
(data.table) the measures planned / done per fields
- sector
(string) a vector with the farm type given the agricultural sector (options: options: 'dairy', 'arable', 'tree_nursery', 'bulbs')
- output
(string) a vector specifying the output type of the function. Options: scores, measures
- penalty
(boolean) the option to apply a penalty for high risk BBWP field indicators
- B_LS_HYDROCAT
(character) Landscape category for differentiating effect of measures on water buffering. (options: "hoge_gronden", "flanken", "beekdalen", "lokale_laagtes", "polders")
Details
B_SLOPE_DEGREE should be used, for backwards compatibility B_SLOPE can still be used. At least one of the must be used, when both are supplied, B_SLOPE is ignored. LSW is by default a data.table with LSW properties, being calculated from bbwp_lsw_properties. Note that all B_LSW_IDs should be preset in the LSW data.table.