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Response of an unsaturated soil to forest transpiration
Author(s) -
Parlange JeanYves,
Aylor Donald E.
Publication year - 1975
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr011i002p00319
Subject(s) - transpiration , outflow , environmental science , hydrology (agriculture) , watershed , dns root zone , vadose zone , daytime , sunset , soil water , atmospheric sciences , geology , soil science , oceanography , botany , biology , photosynthesis , geotechnical engineering , physics , astronomy , machine learning , computer science
Diurnal cycles in water outflow from a small watershed due to forest transpiration were observed 4 times during the summer. Each time the daytime outflow was reduced significantly below that during the following night. The recovery of the outflow to the steady night level takes place for several hours after sunset, and this time of recovery is shown to be controlled by the unsaturated soil water movement in the root zone.