Groundwater-abstraction induced land subsidence and groundwater regulation in the North China Plain
Other literature type
Land subsidence can be induced when various factors such as geological, and
hydrogeological conditions and intensive groundwater abstraction combine.
The development and utilization of groundwater in the North China Plain
(NCP) bring great benefits, and at the same time have led to a series of
environmental and geological problems accompanying groundwater-level
declines and land subsidence. Subsidence occurs commonly in the NCP and
analyses show that multi-layer aquifer systems with deep confined aquifers
and thick compressible clay layers are the key geological and
hydrogeological conditions responsible for its development in this region.
Groundwater overdraft results in aquifer-system compaction, resulting in
subsidence. A calibrated, transient groundwater-flow numerical model of the
Beijing plain portion of the NCP was developed using MODFLOW. According to
available water supply and demand in Beijing plain, several groundwater
regulation scenarios were designed. These different regulation scenarios
were simulated with the groundwater model, and assessed using a
multi-criteria fuzzy pattern recognition model. This approach is proven to
be very useful for scientific analysis of sustainable development and
utilization of groundwater resources. The evaluation results show that
sustainable development of groundwater resources may be achieved in Beijing
plain when various measures such as control of groundwater abstraction and
increase of artificial recharge combine favourably.