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44 JOURNAL OF RANGE MANAGEMENT 54(1), January 2001 Soil water studies for California rangelands have focussed on
 

Summary: 44 JOURNAL OF RANGE MANAGEMENT 54(1), January 2001
Abstract
Soil water studies for California rangelands have focussed on
near-surface hydrologic processes, limiting our understanding of
spatial-temporal dynamics of the water regime below the root
zone. Soil moisture content and potential were monitored for 16
months in 12 locations in an annual grass dominated 20 ha catch-
ment. The data collected were analyzed by ANOVA to determine
significant spatial and temporal differences in soil moisture.
Further analysis identified variables that influenced the amount
of moisture present at a particular subsurface location. It was
determined that there were significant differences in the amount
of soil moisture present along the vertical profile of each site and
between sites. Soil texture, type of vegetation cover, and elevation
were the significant variables that influenced the soil moisture
status.
Key Words: California rangelands, subsurface hydrology
The circulation of water between ocean, atmosphere and land is
called the hydrologic cycle (Freeze and Cherry 1979). Within the
context of rangeland hydrology, the land-based portion of the

  

Source: Allen-Diaz, Barbara - Department of Environmental Science Policy and Management, University of California at Berkeley

 

Collections: Environmental Sciences and Ecology