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Yellow River water rebalanced by human regulation

机译:由人类规定重新平衡黄河水

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The streamflow of major?global rivers changes under the influences of climate change and human activities and varies greatly in different regions. The Yellow River has undergone a dramatic shift during the last six decades. Its streamflow gradually dwindled away and even dried-up severely in the late 20th century, but in recent years it has recovered and remains stable. Comprehensive understanding of the river streamflow change and its driving forces promotes effective water resource management within this complex human-natural system. Here, we develop a runoff identity attribution approach to analyze 61 years of streamflow observations from the Yellow River. We find that between the 1950s and the 1980s, human water consumption contributed more than 90% to streamflow reduction, but from the 1970s onwards, land cover change became the major factor to decrease streamflow. Since 2000, government management schemes have prevented streamflow from declining further and guarantee its stability. Based on the analysis framework we propose, persistent droughts, which are related to abrupt streamflow abatement, may be the most uncontrollable factor in the future. A more resilient management system should be therefore?built to grapple with the expected increased frequency of such extreme climate events in the future.
机译:主要的溪流?全球河流在气候变化和人类活动的影响下发生变化,不同地区变化。黄河在过去的六十年中经历了戏剧性的班次。它的流式流逐渐消失,甚至在20世纪末严重干涸,但近年来它已经恢复并保持稳定。综合了解河流流出变化及其驱动力促进了这种复杂的人类自然系统中有效的水资源管理。在这里,我们开发了一个径流标识归因方法,以分析来自黄河的61年的流流程观测。我们发现,在20世纪50年代和20世纪80年代之间,人类用水量贡献了90%以上的流流量减少,但从20世纪70年代开始,土地覆盖变化成为减少流流的主要因素。自2000年以来,政府管理计划已防止流出从下降进一步下降并保证其稳定性。基于分析框架,我们提出的,持续干旱,与突然的流流量减少有关,可能是未来最无法控制的因素。因此,应更具弹性的管理系统?建造以抓住未来这种极端气候事件的预期增加的频率。

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