Which term describes the refilling of soil moisture when rainfall exceeds evapotranspiration?

Which term describes the refilling of soil moisture when rainfall exceeds evapotranspiration?

• A. Field capacity
• B. Soil moisture surplus
• C. Soil moisture deficit
• D. Soil moisture recharge

Answer: (D)

When rainfall exceeds evapotranspiration, water infiltrates and adds to the soil’s stored moisture, filling the available pore spaces that have dried out. This replenishing of soil moisture is called soil moisture recharge. It describes the process of restoring soil water content after drying due to ET and allows water to move deeper or into groundwater if conditions allow. Field capacity is the maximum water the soil can hold after gravitational drainage has ceased, so it’s about the limit of storage rather than the replenishment process. Soil moisture deficit means the soil is drier than needed relative to ET. A soil moisture surplus refers to water beyond what the soil can store that may drain away or become runoff, not the act of refilling stored moisture.

When rainfall exceeds evapotranspiration, water infiltrates and adds to the soil’s stored moisture, filling the available pore spaces that have dried out. This replenishing of soil moisture is called soil moisture recharge. It describes the process of restoring soil water content after drying due to ET and allows water to move deeper or into groundwater if conditions allow.

Field capacity is the maximum water the soil can hold after gravitational drainage has ceased, so it’s about the limit of storage rather than the replenishment process. Soil moisture deficit means the soil is drier than needed relative to ET. A soil moisture surplus refers to water beyond what the soil can store that may drain away or become runoff, not the act of refilling stored moisture.