Degradation File

This datafile contains variables that indicate sensitivity to acid precipitation, soil moisture, deficit, storm rainfall and wind speed, and average runoff.

DEGRADATION

25 ITEMS

Variable Name Definition Units
MAPUNIT Soil Map Unit (Relate Field)  
ATMODEP Estimated atmospheric deposition (wet and dry)
of substances affecting soil acidity
meq/100g soil/yr
LIMEADD Lime needed for agricultural land  
POINTRN Depth of point rainfall for 1 hr. observation
for storm occurrence with a 10 year return period
mm
RUNOFF Mean annual unit-area water yield to stream chanels mm
SMDEFANN Mean annual soil water deficit mm
SOILSENS Soil sensitivity to long-term acid precipitation  
WINDMAX Wind speed maximum for 1 hr. observation for storm occurrence with a 10 year return perion km/hr