英语翻译Another potential source of increasedrecharge is the capture of recharge that wasoriginally rejected because water levels were ator near land surface.As the water table declinesin response to pumping,a storage capacity forinfiltration of

英语翻译Another potential source of increasedrecharge is the capture of recharge that wasoriginally rejected because water levels were ator near land surface.As the water table declinesin response to pumping,a storage capacity forinfiltration of
英语翻译
Another potential source of increased
recharge is the capture of recharge that was
originally rejected because water levels were at
or near land surface.As the water table declines
in response to pumping,a storage capacity for
infiltration of water becomes available in the
unsaturated zone.As a result,some water that
previously was rejected as surface runoff can
recharge the aquifer and cause a net increase in
recharge.This source of water to pumping wells
is usually negligible,however,compared to other
sources.
In summary,estimation of the amount of
ground water that is available for use requires
consideration of two key elements.First,the use
of ground water and surface water must be evaluated
together on a systemwide basis.This evaluation
includes the amount of water available from
changes in ground-water recharge,from changes
in ground-water discharge,and from changes in
storage for different levels of water consumption.
Second,because any use of ground water changes
the subsurface and surface environment (that is,
the water must come from somewhere),the public
should determine the tradeoff between groundwater
use and changes to the environment and
set a threshold at which the level of change
becomes undesirable.This threshold can then be
used in conjunction with a systemwide analysis of
the ground-water and surface-water resources to
determine appropriate limits for consumptive use.
Systemwide hydrologic analyses typically
use simulations (that is,computer models) to aid
in estimating water availability and the effects of
Hypothetical Examples of How Ground-Water
Systems Change in Response to Pumping
23
extracting water on the ground-water and surfacewater
system.Computer models attempt to reproduce
the most important features of an actual
system with a mathematical representation.If
constructed correctly,the model represents the
complex relations among the inflows,outflows,
changes in storage,movement of water in the
system,and possibly other important features.
As a mathematical representation of the system,
the model can be used to estimate the response
of the system to various development options
and provide insight into appropriate management
strategies.However,a computer model is a simplified
representation of the actual system,and the
judgment of water-management professionals is
required to evaluate model simulation results and
plan appropriate actions.We return to the use of
models in the final chapter of this report,“Meeting
the Challenges of Ground-Water Sustainability

英语翻译Another potential source of increasedrecharge is the capture of recharge that wasoriginally rejected because water levels were ator near land surface.As the water table declinesin response to pumping,a storage capacity forinfiltration of
另一个潜在的增加
补给是补给,捕获
因为水的水平在最初拒绝了
或近地表.由于地下水位下降
针对抽油,存储容量
渗透水就可以在
不饱和区.作为一个结果,一些水,
以前被拒绝作为地表径流能
补给含水层,导致净增加
补给.此水抽威尔斯
通常是可以忽略不计的,然而,相比其他
来源.
总之,该数量的估计
地下水是可使用的要求
两个关键因素的考虑.首先,使用
地下水和地表水必须评估
在一个系统的基础.这一评价
包括水的量
在地下水补给的变化,从变化
在地下水排放,并从变化
针对不同层次的耗水存储.
第二,因为任何使用地下水的变化
环境的地面和地下（即,
水必须来自某处）,公众
要确定地下水之间的权衡
利用和环境的变化和
设置的阈值水平的变化
已成为不受欢迎的.该阈值可以
用于与系统分析相结合
地下水和地表水资源
确定消耗用适当的限制.
系统的水文分析通常
使用模拟（即,计算机模型）的援助
在估计水的可用性的影响
假设的例子,地下水
针对抽油更换系统
23
提取水对地下水和地表水
系统.计算机模型试图重现
一个实际的最重要的特征
用数学模型表示系统.如果
构建正确,模型表示
在流入流出的复杂关系,
在存储的变化,在水的运动
系统,以及其他可能的重要特征.
作为一个系统的数学表示,
该模型可以用来估计响应
的系统不同的发展方案
提供洞察的适当的管理
策略.然而,一个计算机模型的简化
系统的实际表现,和
水管理专业判断
需要评估模型的模拟结果与
规划适当的行动.我们回到使用
在本报告的最后一章的模型,”会议
地下水可持续发展所面临的挑战
希望能帮到你