Research was conducted to determine the applicability of using the theory of
regionalized variables or geostatistics in characterizing the spatial variability of reference
evapotranspiration (ETr) over various climatic regimes for the state of Oregon. The state was
divided into five climatic regions based on topographic features and local meteorological
conditions:...
The effects of aspect, canopy, elevation, and season both singly
and in combination on soil temperatures at 50 cm depths were
evaluated.
The objectives of the study were (i) to develop a standard procedure
for obtaining soil temperature data adequate to classify soils
at the family and great group levels,...