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Soil Moisture Flux and Evapotranspiration Determined from Soil Hydraulic Properties in a Chaparral Stand
Author(s) -
Scholl David G.
Publication year - 1976
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1976.03615995004000010009x
Subject(s) - chaparral , evapotranspiration , environmental science , water balance , surface runoff , hydraulic conductivity , water content , hydrology (agriculture) , soil science , moisture , watershed , soil water , flux (metallurgy) , geology , chemistry , geotechnical engineering , ecology , botany , organic chemistry , machine learning , computer science , biology
Measurements of rainfall, overland flow, soil moisture, and hydraulic properties were obtained from a sloping plot in a chaparral stand. The moisture characteristic and dynamic conductivity were determined from core samples of several soil layers to a depth of 420 cm. A water balance model requiring the above parameters and a Darcian moisture flux analysis was used to predict drainage below the root zone and loss by evapotranspiration. Daily results of the water balance were summarized during 2 water years. Predicted values agreed well with values measured on a nearby watershed during both years—the first an unusually dry year, the second unusually wet.