[1]WEI Guo-liang,LI Wei,WANG Ping,et al.Effects of Hydropower Development on Distribution of Soil Nutrients in Riparian along Lancang River[J].Research of Soil and Water Conservation,2014,21(02):47-52.
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Effects of Hydropower Development on Distribution of Soil Nutrients in Riparian along Lancang River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 02
Page number:
47-52
Column:
Public date:
2014-04-28
- Title:
- Effects of Hydropower Development on Distribution of Soil Nutrients in Riparian along Lancang River
- CLC:
- S153.6;X820.3
- DOI:
- -
- Abstract:
- Based on four types of river sections along the middle and lower reaches of Lancang River, the effects of hydropower development on spatial distribution characteristics of soil nutrients were studied. Results showed that hydropower development was one of the primary driving factors influencing spatial distribution characteristics of soil nutrients along the riparian of middle and lower reaches of Lancang River. Under the effects of hydropower development, spatial distribution of soil nutrient contents and soil quality index of riparian showed a rising tendency with the increasing distances to the riverbank, and the peak value appeared at Manwan reservoir riparian along the river. Soil quality indexes of Manwan reservoir and Xiaowan belts had lower changing coefficients, but they were higher in below-dam and Jinghong belts. The vegetation restoration and ameliorated climate conditions around the functioning reservoir had positive effects on soil quality of the riparian. However, the construction of dam had negative effects on soil quality and the dam construction with larger scale and heavier constructing intensity affected more seriously. At the same time, the transverse effect intensity of hydropower development reduced exponentially along with the increases in distances to riverbank. In general, under the effects of hydropower development, sampling plots with better soil quality concentrated in the riparian of reservoir and lower natural section and the range far away from riverbank and those with poorer soil quality concentrated in the riparian of constructing dams and the locations within 50 m to riverbank.
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