【摘 要】
：
Mountain block recharge(MBR),an important water resource,is a widespread process that recharges lowland aquifers.However,little is known about MBR due to the limited climatic and geologic data in mountainous regions such as the northern central foothills
【机 构】
：
College of Earth Science and Technology,Zhengzhou University,Zhengzhou 450001,China;School of Water
论文部分内容阅读
Mountain block recharge(MBR),an important water resource,is a widespread process that recharges lowland aquifers.However,little is known about MBR due to the limited climatic and geologic data in mountainous regions such as the northern central foothills of Tianshan.Here,we present an approach to quantify MBR through the combination of water balance calculations and numerical modeling.MBR calculated from the water balance in the data-limited Tianshan Mountains is employed as a fluid-flux boundary condition in the numerical model of the plain.To verify the performance of the model,mean absolute error and root mean square error were used.Results show that the volume of water that is recharging the aquifer via MBR is 107.29 million m3/yr,accounting for 2.2％ of the total precipitation that falls in the mountains.Additionally,53.3％ of that precipitation enters the plain aquifer via runoff,totaling 2,652.68 million m3/yr.The lower volume of MBR is attributed to a major range-bounding anticline with apparent low permeability in the Tianshan Mountains.Through numerical modeling of groundwater,MBR coming from bedrock was found to be significant,accounting for 14％ of total aquifer recharge in the plain,only after the portion of runoff seepage.This research contributes to a deeper understanding of MBR,and may provide instructions for estimating groundwater recharge in arid and semi-arid areas.
其他文献
Strong wind events frequently result in creating large areas of windthrow,which causes abrupt environmental changes.Bare soil surfaces within pits and root plates potentially expose soil to erosion.Absence of forest may alter the dynamics of water circula
Species diversity exhibit a close relationship with ecosystem services,and making clear the relationship can help us understand the service value and functional mechanism of ecosystems and take measures to promote human well-being.Here,we used species sur
With the development of industrial technology,heat transfer at the microscale has attracted more and more attention.In this work,200 μm platinum wire and 150 μm nickel-chromium wire were used as experimental objects,which the power was provided by DC powe
In this study,geophysical and geotechnical studies were carried out in NE Turkey to evaluate the stability and support design of cut slopes that will be excavated during the construction of a new border control complex.13 vertical and 3 inclined boreholes
Jing River is a tributary of the Wei River which is the largest tributary of the Yellow River.Sediments eroded from the upland of the Jing River basin are one of the major contributors of sediment entering the lower Wei River (LWR).The Dongzhuang reservoi
The effect of vegetation on the water-heat exchange in the freezing-thawing processes of active layer is one of the key issues in the study of land surface processes and in predicting the response of alpine ecosystems to climate change in permafrost regio
The slope instability is associated with increasing rate of rainfall infiltration which cause shear strength reduction and suction loss and the slope tend to failure.The influences of rainfall infiltration on the stability of clayey and sandy slopes have
Erosion of geological units and sediment load in rivers can be considered as the serious problems in recent decades.Increasing sediment loads generate major hazards for water resources development,particularly in terms of loss of reservoir storage due to
Climate change induces profound changes in mountain territories that affect the activities pursued there.Tourism is one activity that is strongly impacted by these changes.Most research on tourism in mountain regions has focused on winter sports tourism,b
Ecological Niche Modeling uses the geographic coordinates of species presence records as the primary input to estimate potential geographic distributions.It is little known whether carrying out rigorous data pre-processing is necessary before building nic