LOCAL CLIMATE DRYING EFFECT FROM GROUNDWATER SYSTEM DEGRADATION IN NORTHERN CHINA
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摘要: 北方气候干旱化趋势越来越强烈, 对生态环境产生了巨大影响.在分析气候干旱化研究现状基础上, 讨论了地下水系统在地球表层系统中的地位、对地球表层系统的调节作用以及对北方干旱化趋势研究的意义, 分析了地下水系统的退化对北方气候干旱化的作用.研究表明其已经产生了不可忽视的环境效应, 具体表现在地下水的过量开采使区域地下水系统退化, 导致地球浅表水、热、CO2转换模式的改变, 造成水热失调, 加快局域气候干旱化.认为应该研究地下水系统演化规律, 揭示其时相变化对干旱化形成和发展的作用机理, 评估、预测未来地下水开发的相关环境效应, 提出防止干旱化的地下水开发调控模式, 从而为北方干旱化地区实施可持续发展提供科学依据.Abstract: The more and more severe arid trend in the climate of the northern China has produced a great effect on the local ecological environment. On the basis of the present research into the arid climate, this paper touches upon the role of the groundwater system in the earth's surface system, the regulating effect of the groundwater system in the earth's surface system, and the significance of the research into the arid trend of the northern China. Then this paper analyzes the effect of the groundwater system degradation on the climate arid in the northern China, indicating that such an effect has already produced some environmental effects that can not be neglected. For example, the excessive extraction of the local groundwater has resulted in the degradation of the regional groundwater system, in the change in the transformation patterns of the surface water, heat and CO 2, in the imbalance between the water and heat, and finally in the arid of the local climate. Therefore, the evolution pattern of the groundwater system should be studied in order to reveal the effect of time space change on the formation and development of the climate arid, to evaluate and forecast the environmental effects related to the future groundwater exploitation and to present the regulating model of groundwater exploitation free of climate arid, providing a scientific basis for the sustained development in the climate arid area in the northern China.
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Key words:
- climate arid /
- groundwater system /
- regulating function
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