Study on the influence of vegetation change on runoff generation mechanism in the Loess Plateau, China | Zendy

Xueli Zhang | Zendy; Yue Yu | Zendy; Caihong Hu | Zendy; Jianhua Ping | Zendy

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Study on the influence of vegetation change on runoff generation mechanism in the Loess Plateau, China

Author(s) -

Xueli Zhang,

Yue Yu,

Caihong Hu,

Jianhua Ping

Publication year - 2020

Publication title -

water science and technology water supply

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 39

eISSN - 1607-0798

pISSN - 1606-9749

DOI - 10.2166/ws.2020.361

Subject(s) - surface runoff , runoff curve number , hydrology (agriculture) , environmental science , structural basin , loess plateau , watershed , vegetation (pathology) , loess , runoff model , drainage basin , streamflow , flood myth , geology , soil science , ecology , geography , geomorphology , medicine , geotechnical engineering , cartography , archaeology , pathology , machine learning , computer science , biology

In recent years, the amount of water and sediment in the Yellow River Basin has dropped drastically. This paper selected 125 rainfall and flood data points from 1965 to 2015, combined hydrological methods and mathematical statistics to analyze the hydrological factors and runoff generation mechanism, and combined the underlying surface conditions of the Gushanchuan Basin. The characteristics of change revealed the temporal and spatial variation characteristics and related factors of the runoff generation mechanism in the basin. The results showed that the Gushanchuan Basin is still dominated by HOF runoff, but the runoff generation mechanism has also changed with changes in the underlying surface, which are reflected in increased runoff components, the reduced proportion of HOF runoff, and the increased proportion of saturation-excess overland flow (SOF) runoff and mixed runoff. We analyzed the variation law of underlying surface in the basin, which indicated that the increase in the forest grass area was the main factor affecting changes in the watershed runoff generation mechanism. This research will enable a deeper understanding of the runoff generation mechanism of the main soil erosion areas in the Loess Plateau, and reveal variations in the runoff generation mechanism in the Yellow River.

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