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Energy Balance Investigations on Native Range Vegetation in the Northern Great Plains
Author(s) -
Aase J. Kristian,
Wight J. Ross
Publication year - 1972
Publication title -
ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.144
H-Index - 294
eISSN - 1939-9170
pISSN - 0012-9658
DOI - 10.2307/1935435
Subject(s) - rangeland , evapotranspiration , advection , environmental science , vegetation (pathology) , energy balance , atmospheric sciences , pan evaporation , evaporation , potential evaporation , wet season , range (aeronautics) , bowen ratio , growing season , hydrology (agriculture) , ecology , geography , biology , geology , agroforestry , meteorology , medicine , physics , materials science , geotechnical engineering , pathology , composite material , thermodynamics
Evapotranspiration (ET) to net radiation (R n v ) ratios for native vegetation on semiarid western rangeland were less than 1 throughout the season except for a rainy period, illustrating the contributing role of semiarid range to downwind advection. Ratios of pan evaporation (E p ) to net radiation over an evaporation pan (R n p ) were consistently greater than 1, indicating the contribution of advective energy to free water evaporation. Net radiation over both vegetation and an evaporation pan were similar except for early and late growing season. The relationship between R n v and solar radiation (R 8 ) was highly variable. with R n v :R 8 ratios ranging from 0.2 to 0.7.