groundwater recession的意思|示意

'

Groundwater recession is a term used to describe subsurface water, which is typically found in rock formations and soil. It is most commonly used in reference to aquifers and is used to explain how groundwater levels can fluctuate over time.

Groundwater recession occurs when the rate of water pumped from the aquifer is greater than the rate at which new groundwater is replenished. This means that groundwater levels decrease, leading to a recession in levels over time. This can be a natural process, or it can be caused by human activity such as excessive water usage.

Groundwater recession is an important concept in hydrology since it affects the availability of water resources. If the rate of pumping exceeds the rate of replenishment, then the water table will lower, leading to the drying up of shallow wells and streams, decreased crop yield, and increased vulnerability to contamination. Groundwater recession can also lead to saltwater intrusion, which occurs when saltwater enters freshwater aquifers due to the lower water levels.

Groundwater recession can be monitored by comparing water levels over time, as well as by measuring the pumping rates and the rate of recharge. To prevent further recession, measures such as water conservation, proper water management, and the use of rainwater harvesting systems should be implemented.