Abstract
Understanding the vertical distribution dynamics of soil moisture is essential for estimating soil water resources, controlling soil degradation and regulating the relationship between soil water and plant growth in water-limited regions. There have been a few studies of the vertical change of soil moisture in forestlands, but there are few models that can suitably describe the vertical change of soil moisture under different conditions. In this study, a one-compartment soil water model (OCSWM) was developed, and soil moisture data collected in a shrub forest were used to test the model.
Highlights
Understanding the vertical distribution dynamics of soil moisture is essential for estimating soil water resources, controlling soil degradation and regulating the relationship between soil water and plant growth in water-limited regions
We found that the soil moisture supply and evapotranspiration can be explained by one-compartment soil water model (OCSWM), respectively, see Figure 3
We could not obtain right parameter values, or the goodness-of-fit, such as the soil water data measured on September 1 and September 30, Table 1, which shows that two-compartment soil water model (TCSWM) is not completely suitable to fit the vertical change of soil moisture in forestland
Summary
Understanding the vertical distribution dynamics of soil moisture is essential for estimating soil water resources, controlling soil degradation and regulating the relationship between soil water and plant growth in water-limited regions. There have been a few studies of the vertical change of soil moisture in forestlands, but there are few models that can suitably describe the vertical change of soil moisture under different conditions. A one-compartment soil water model (OCSWM) was developed, and soil moisture data collected in a shrub forest were used to test the model. The results showed that the OCSWM can better express the vertical change of soil moisture under different conditions compared with the two-compartment soil water model (TCSWM) in terms of describing the vertical change of soil moisture under different situations in the shrub forest. The OCSWM has good application value in estimating some important parameters of soil water management for the sustainable management of forests in water-limited regions
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