Estimates of tree root water uptake from soil moisture profile dynamics

Dynamic modeling of root water uptake using soil moisture data

In this work a dynamic model of water uptake from plants growing in naturally vegetated areas subjected to a rainfall and evaporation time series is described. The model results are compared and contrasted with popular pre-existing models. Also, the effects of the uptake pattern on the movement of water across multiple soil layers are also analyzed. The results showed that contrary to common mo...

Estimating Soil Moisture Profile Dynamics from Near-surface Soil Moisture Measurements and Standard Meteorological Data

Application of Data Assimilation with the Root Zone Water Quality Model for Soil Moisture Profile Estimation

1 2 3 4 5 6 Application of Data Assimilation with the Root Zone Water Quality Model for Soil 7 Moisture Profile Estimation in the Upper Cedar Creek, Indiana 8 9 10 11 12 13 14 15 16 17 18 19 Eunjin Han, Venkatesh Merwade and Gary C. Heathman 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Graduate Research Assistant, School of Civil Engineering, Purdue University, West Lafayette, 37 IN. e-ma...

Using Soil Moisture Data to Estimate Evapotranspiration and Development of a Physically Based Root Water Uptake Model

In humid regions such as west-central Florida, evapotranspiration (ET) is estimated to be 70% of precipitation on an average annual basis (Bidlake et al. 1993; Knowles 1996; Sumner 2001). ET is traditionally inferred from values of potential ET (PET) or reference ET (Doorenabos and Pruitt 1977). PET data are more readily available and can be computed from either pan evaporation or from energy b...

Diurnal Method for Evapotranspiration Estimation from Soil Moisture Profile

Water use of plants can be manifested in diurnal signal of soil moisture changes, and also of water table fluctuations in shallow water table environments. The signal can be especially strong in case of groundwater dependent forest vegetation with high water demand, where the water uptake is partly happening across the capillary zone. A new technique for water uptake estimation was elaborated o...