[1]HE Ji-cheng.Impact of the Railway Constructions of the Second Line on Soil Erosion and Water Loss in Qinling-Daba Mountainous Area[J].Research of Soil and Water Conservation,2012,19(06):64-67,76.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 06
Page number:
64-67,76
Column:
Public date:
2012-12-20
- Title:
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Impact of the Railway Constructions of the Second Line on Soil Erosion and Water Loss in Qinling-Daba Mountainous Area
- Author(s):
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HE Ji-cheng
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Division of Environment and Resources Research, Institute of Transport Planning and Research, Ministry of Transport, Beijing 100028, China
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- Keywords:
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railway construction; soil and water loss; impact index of soil erosion and water loss; Qinling-Daba Mountains
- CLC:
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S157;U212
- DOI:
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- Abstract:
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In this study, the impact of constructions of the second line for three railways (i.e. Xiangfan-Ankang railway, Xi’an-Ankang railway, and Ankang-Chongqing railway) on soil and water loss in Qinling-Daba Mountains was quantitatively analyzed and evaluated by using the SWII method. The results showed that the impact indices values of soil erosion and water loss of the foresaid three projects were 0.240, 0.184 and 0.202, respectively, which were lower than the averaged value of impact indices of railways construction projects in China. This also indicated that the railway constructions of the second line would induce less soil and water loss than newly-built railways constructions. The causes for the low indices values of the railway constructions of the second line included less occupation land (2.54hm2/km), little earthwork volume (6.99×104 m3/km), small amount of soil and water loss (9 028 t/km). We could shorten the construction period, reduce wasted excavation and decrease impact area of the construction to mitigate the impact on soil and water loss and protect the eco-environment of mountainous area along the railways.