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首页> 外文期刊>Ambio: A Journal of the Human Environment >Oasis Land-Use Dynamics and Its Influence on the Groundwater in Arid Northwest China: A Case from Terminal Oasis of Shiyang River Basin
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Oasis Land-Use Dynamics and Its Influence on the Groundwater in Arid Northwest China: A Case from Terminal Oasis of Shiyang River Basin

机译：西北干旱区绿洲土地利用动态及其对地下水的影响-以石羊河流域末级绿洲为例

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摘要

Oasis is a specific landscape, usually distributed along the sides or terminal of the inland river. In China, oases are mainly located in the deserts and gobies of arid Northwest China (1). For thousands of years, the oases have played a significant role in the development of the local economy or in maintenance of the ecological safety of China. Although the area of these oases takes up only 4-5 percent of the total area of the arid regions in Northwest China, more than 90 percent of the population and more than 95 percent of social wealth are concentrated within the oases (2). The oases are not only the most concentrated area of human activities in arid regions, but are also the largest area where artificial disturbances happen at the regional scale. During the last 50 years, as the population grew and cultivated land area increased, the balance between supply and demand of water has become more serious: on the one hand, the quantity of water flowing into the downstream sharply decreased; whereas on the other hand, the water requirement greatly increased in the terminal oasis, which induced excessive exploitation of the groundwater there. This resulted in some ecological problems in the downstream oases, such as descending groundwater table depth, deteriorating water quality, death of vegetation, and land desertification, and so on (3). The aims of this article are i) to report the changes of land use and detect its impacts on groundwater in Minqin Oasis, and ii) to propose some countermeasures for ecological reconstruction in the Minqin Oasis.
机译：绿洲是一种特殊的景观，通常分布在内陆河的两侧或末端。在中国，绿洲主要分布在中国西北干旱地区的沙漠和戈壁中（1）。几千年来，绿洲在当地经济发展或维护中国生态安全中发挥了重要作用。尽管这些绿洲的面积仅占中国西北干旱地区总面积的4％至5％，但超过90％的人口和95％以上的社会财富都集中在这些绿洲中（2）。绿洲不仅是干旱地区人类活动最集中的区域，还是区域范围内发生人为干扰的最大区域。在过去的50年中，随着人口的增加和耕地面积的增加，水的供需之间的平衡变得更加严重：一方面，流入下游的水量急剧减少;另一方面，流入下游的水量急剧减少。另一方面，在终端绿洲，水的需求量大大增加，导致那里地下水的过度开采。这导致了下游绿洲的一些生态问题，例如地下水位下降，水质恶化，植被死亡和土地荒漠化等（3）。本文的目的是：i）报告民勤绿洲的土地利用变化并检测其对地下水的影响; ii）提出民勤绿洲生态重建的一些对策。

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