[1]DENG Juan,HU Dongfeng,SHANGGUAN Zhouping.Relationship Between River Water Quality and Runoff and Sediment in Different Ecological Type Areas of Shaanxi Province[J].Research of Soil and Water Conservation,2018,25(04):110-115.
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Relationship Between River Water Quality and Runoff and Sediment in Different Ecological Type Areas of Shaanxi Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 04
Page number:
110-115
Column:
Public date:
2018-06-13
- Title:
- Relationship Between River Water Quality and Runoff and Sediment in Different Ecological Type Areas of Shaanxi Province
- Keywords:
- water quality; pollution factor; runoff and sediment; Shaanxi Province
- CLC:
- X824;X522;P333
- DOI:
- -
- Abstract:
- For a more comprehensive and true reflection of the relationship between surface water quality and soil and water loss in Shaanxi Province, three main rivers, Weihe River, Yanhe River and Hanjiang River, were selected as the research objects. According to the water quality monitoring data of 27 river sections, the water quality of 5 sections of the Yanhe River Basin, 13 sections of the Weihe River Basin, 9 sections of the Hanjiang River Basin was systematically evaluated. In the view of water pollution, we analyze the relationship between the pollution sources and the runoff, sediment of three typical rivers. The main conclusions are as follows. The water quality of the three typical river water bodies showed obvious temporal and spatial characteristics. From 2001 to 2010, the quality of the three typical rivers improved significantly. From 2001 to 2010, the cross-sections of the 27 monitoring sections in Ⅰ—Ⅲ water quality increased from 11 to 18, the increasing proportion was 66.7%.water qualityⅤwas found in 9 monitoring sections, accounting for 33.0%. At the spatial scale, the pollution of the three typical rivers showed the significant difference from north to south. The Weihe River in the north of the Qinling Mountains was seriously contaminated; the Yanhe River was slightly contaminated and the water quality in Hanjiang River in the south of the Qinling Mountains has be excellent for ten years. There was a negative correlation between NH3-N concentration and runoff volume in the Wei River, the greater the runoff, the lower the NH3-N concentration. In the Yanhe River Basin, the DO concentration was a positive correlation with the annual runoff volume, the greater the runoff, the higher DO concentration. There was a positive correlation between the annual sediment load and the concentration of CODMN in the Hanjiang River, the greater the amount of sediment transport, the higher the CODMN, the more serious water pollution.
- References:
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1900-01-01