A Review of Advances in Groundwater Evapotranspiration Research

Groundwater evapotranspiration (ETg) is an important component of the hydrological cycle in water-scarce regions and for local ecosystems agricultural irrigation management. However, accurate estimation ETg not easy due to uncertainties climatic conditions, vegetation parameters, parameters unsaturated zone aquifers. The current methods calculating mainly include WTF method numerical groundwater model. often requires data supplementation from model reduce uncertainty; addition, it relies on point-monitoring cannot solve spatial heterogeneity ETg. calculation module set up too simply ignores influence surface cover. Subsequent research breakthroughs should focus improvement theory setting aquifer water-table fluctuation monitoring network. couple remote sensing with improve accuracy calculation.