(7b)
In this equation, F represents the water vapor pressure ratio
between the beginning and the end of the water vapor mass. In the
research under discussion, F is equal
to
water pressure ratio between the stations in the track path of the water
vapor mass and the Xiying Reservoir, during summer (Wang et al., 2016).
Note that the relevant parameters in the above formula are expressed in
decimal form.
3.2 Lake evaporation to
inflow ratios
Assuming that the volume of lake water remains stable for a long period
of time, the theoretical model of reservoir capacity and stable isotopic
equilibrium can be expressed by formula 8 for lakes that are fully mixed
with inflow runoff and lake water body.
I L=Q L+E L