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Soil and Water Engineering 12
1. 1
Advanced Soil and Water
Engineering #13-14
Masahiro Tasumi
Dept. Forest & Env. Sci.
Class schedule
No. Date Contents
1 4/11 Course outline for Advanced Soil and Water Engineering
2 4/18 Physical characteristics of soil I
3 4/25 Physical characteristics of soil II (NO CLASS)
4 5/9 Physical characteristics of soil III
5 5/16 Physical characteristics of soil IV
6 5/23 Micrometeorology I
7 5/30 Micrometeorology II
8 6/6 Micrometeorology III
9 6/13 Micrometeorology IV
10 6/20 Soil water and Evapotranspiration I
11 6/27 Soil water and Evapotranspiration II
12 7/4 Soil water and Evapotranspiration III
13 7/11 Soil and water engineering in operation I
14 7/18 Soil and water engineering in operation II
15 7/25 Discussions
Today’s Topic
Soil Water Balance
and
Soil Evaporation
--- Modelling
Gravitational potential
equals to matric potential.
e.g. 2-3days after heavy
rain
Vegetation dies.
Reduce transpiration or
photosynthesis
Volumetric water content (%)
Field Capacity
Wilting Point
Allowable soil water
Excess water (e.g. after rain)
Combine Water Constants (lecture #5)
and FAO-PM-ET (lecture #12-13) to
estimate soil moisture and ET