摘要
针对鄂尔多斯高原存在的湖泊萎缩、地下水位下降等生态环境问题,采用数值模拟方法,通过建立区域尺度理想剖面二维地下水流模型,从水动力学机制上探讨了区域植被变化对地下水系统和湖泊的影响机制。通过对比目前常用的定水头边界与通量上边界条件两种方法的适用条件及不足,提出了改进后的变通量上边界概化方法,并将其应用于鄂尔多斯高原区域地下水模拟中。结果表明:区域植被条件改变对地下水和湖泊影响明显,该影响受区域地下水流系统演化规律的控制。
Considering the eco-environmental problems such as the shrinkage of lakes and the decline of groundwater level in the Ordos Plateau,the impact of regional vegetation change on groundwater system and lakes was discussed in view of the hydrodynamic mechanism by developing the two-dimensional groundwater flow model with ideal profile on the regional scale. This paper proposed an improved method for generalizing the upper boundary of the flux by comparing the applicable conditions and shortcomings of the two methods of the specified-head upper boundary and the flux upper boundary conditions. The method was applied to the groundwater simulation of Ordos Plateau. The results show that the effect of regional vegetation conditions on groundwater and lakes is obvious; the effect is controlled by the evolution of regional groundwater system.
作者
张俊
尹立河
马洪云
黄金廷
王晓勇
ZHANG Jun,YIN Lihe,MA Hongyun,HUANG Jinting,WANG Xiaoyong(Key Laboratorgy for Groundwater and Ecology in Arid and Semi-arid Areas,CGS,Xi＇an Center of China Geological Survey,Xi＇an 710054,Chin)
出处
《人民黄河》
CAS
北大核心
2018年第6期72-76,共5页
Yellow River
基金
国家自然科学基金资助项目(41402226
41472228)
中国地质调查局地调项目(121201011000150020)
旱区地下水文与生态效应教育部重点实验室(长安大学)开放基金资助项目(310829171110)
关键词
植被变化
湖泊萎缩
地下水流系统
上边界条件
鄂尔多斯高原
vegetation change
lake shrinking
groundwater flow system
upper boundary conditions
Ordos Plateau
