首页> 外文期刊>Polish Journal of Environmental Studies >Effects of Human Activities in the Middle Drainage Area on the Lower Channel as Influenced by the Xiaobeiganliu River Reach, Yellow River
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Effects of Human Activities in the Middle Drainage Area on the Lower Channel as Influenced by the Xiaobeiganliu River Reach, Yellow River

机译:黄河小贝干流河段对中流域人类活动对下游河道的影响

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摘要

The fluvial processes of sediment-laden flow running through the Xiaobeiganliu (XBGL) River reach changed dramatically after the year 2000. Thus, the connection between the sediment source area (area between Toudaoguai and Longmen) and the lower channel requires further analysis. This study aims to investigate the effects of human activities in the drainage area of Toudaoguai-Longmen on XBGL River reach and the Lower Yellow River (LYR). Prior to 1999, deposition in XBGL was positively correlated with inflow sediment and runoff entering the river reach. The correlation between these two variables became negative after 1999. The ratios between deposition in XBGL and change of runoff and sediment by human activities in the upper drainage area were 0 in 1971-1984, 0.15 in 1985-1998, and -0.39 in 1999-2012. For the changed deposition processes of the XBGL, the ratios between deposition in the LYR and change of runoff and sediment by human activities in the upper drainage area were 0.87 in 1971-1984, 0.92 in 1985-1998, and 2.33 in 1999-2012. The analyses revealed the important role of XBGL in sediment storage in the river system, where the decrease in inflow suspended sediment load of XBGL results in a likely increase in the outflow of the river reach.
机译:流经小贝干流(XBGL)河的含沙流的河流过程在2000年之后发生了巨大变化。因此,沉积源区(头岛拐与龙门之间的区域)与下游河道之间的联系需要进一步分析。本研究旨在调查头道拐龙门流域人类活动对XBGL河段和黄河下游的影响。在1999年之前,XBGL中的沉积与流入河流的径流和沉积物呈正相关。这两个变量之间的相关性在1999年之后变为负值。1971-1984年,XBGL中的沉积与人类活动造成的径流和沉积物变化之间的比率为1971-1984年为0,1985-1998年为0.15,1999-1998年为-0.39 2012。对于XBGL沉积过程的变化,上游流域的LYR沉积与人类活动引起的径流和沉积物变化之间的比率在1971-1984年为0.87,在1985-1998年为0.92,在1999-2012年为2.33。分析揭示了XBGL在河流系统中的沉积物存储中的重要作用,其中XBGL的流入悬浮泥沙负荷的减少导致河段流出量的增加。

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