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首页> 外文期刊>Environmental geology and water sciences >Re-evaluating the impacts of human activity and environmental change on desertification in the Minqin Oasis, China
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Re-evaluating the impacts of human activity and environmental change on desertification in the Minqin Oasis, China

机译：重新评估人类活动和环境变化对中国民勤绿洲荒漠化的影响

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摘要

The Minqin Oasis and its adjacent regions in northern China experienced significant desertification beginning 2,000 years ago and continuing to the present, and numerous studies have claimed that human activities, especially the flourishing of agriculture, have played a major role in environmental change in this region. Our analysis suggests that the observed desertification was mainly controlled by changes in the water component of the ecosystem and the arid climate. The impacts of cultivation on desertification from 2,000 years ago to the mid-1900s appear to have been relatively minor compared to the impacts of the area's arid climate and its native geo-morphological processes. Although human activity has increased from the late-1940s to the present, and the areas of the oasis reclaimed for agriculture have reached a maximum, desertification over the past 50 years appears to be a continuing process that began thousands of years ago, and is mainly controlled by decreasing water levels caused by the arid climate, local geomorphological processes and overuse of water in the upstream. Although both human activities and climate variation are important drivers of the desertification process, and it is not possible to completely separate the human influence from the climate impact, key factors on controlling desertification should be investigated before we place the blame solely on the flourishing of agriculture in this region.
机译：民勤绿洲及其在中国北方的邻近地区从2000年前开始一直持续到现在，经历了严重的荒漠化，许多研究声称，人类活动，尤其是农业的繁荣，在该地区的环境变化中发挥了重要作用。我们的分析表明，观测到的荒漠化主要是由生态系统的水组成和干旱气候的变化控制的。与该地区干旱气候及其原生地貌过程的影响相比，从2000年前到1900年代中期，耕种对荒漠化的影响似乎相对较小。尽管从1940年代后期到现在人类活动有所增加，用于农业的绿洲面积已达到最大，但过去50年的荒漠化似乎是数千年前开始的持续过程，主要是由干旱气候，局部地貌过程和上游水的过度使用引起的水位下降控制。尽管人类活动和气候变化都是荒漠化过程的重要驱动力，并且不可能将人类影响与气候影响完全区分开，但在将责任完全归咎于农业蓬勃发展之前，应该研究控制荒漠化的关键因素在这个地区。

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