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Spatio-temporal analysis of different levels
of road expansion on soil erosion distribution: a case study of Fengqing
county, Southwest China |
| Zhaoling ZHANG,Shiliang LIU,Shikui DONG,Wei FU,Baoshan CUI, |
| State Key Laboratory
of Water Environment Simulation, School of Environment, Beijing Normal
University, Beijing 100875, China; |
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Abstract The construction of roads has direct and indirect impacts on soil erosion, with spatio-temporal variations existing among different levels of road zones. Aiming to quantitatively analyze the soil loss, this paper explored the relationship between the erosion of soil and its distance from the road in Fengqing county, Southwest China in 1987 and 2004, respectively. The average soil erosion was calculated and expressed with grid map using universal soil loss equation (USLE) model based on GIS and RS. Along the different levels of roads classified as trunk, county, town, village and unpaved road, the buffer zones were subdivided into five stripes, each of which was 200 meters wide. The average soil erosion modulus of each buffer zone was also counted. Results show that the soil loss decreases with increasing distance to the road except rare trunk roads in the region. In addition, the declined intensity varies with the different levels of roads. Soil erosion was more serious along the lower level road than the higher ones. And soil erosion was more severe for all levels of roads in 1987 than those in 2004 because much more rainfalls affected the situation of soil erosion in 1987.
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| Keywords
soil erosion
road buffer
universal soil loss equation (USLE)
GIS
Southwest China
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Issue Date: 05 December 2009
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Arnáeza J, Larreab V, Ortigosa L(2004). Surface runoff and soil erosion onunpaved forest roads from rainfall simulation tests in northeasternSpain. Catena, 57: 1―14
doi: 10.1016/j.catena.2003.09.002
|
|
Cai C F, Ding S W, Shi Z H, Huang L, Zhang G Y(2000). Study of applyingUSLE and geographical information system IDRISI to predict soil erosionin small watershed. Journal of Soil andWater Conservation, 14(2): 19―24 (in Chinese)
|
|
Chen M H, Zhou F J, Huang Y H, Lu C L, Lin F X(1995). Study on the soilerodibility factor. Journal of Soil andWater Consservation, 9(1): 19―24 (in Chinese)
|
|
Jordán A, Martínez-Zavala L(2008). Soil loss and runoff rates on unpaved forest roads in southern Spainafter simulated rainfall. Forest Ecologyand Management, 255: 913―919
doi: 10.1016/j.foreco.2007.10.002
|
|
Jungerius P D, Matundura J, Vandeancker J A M(2002). Road constructionand gully erosion in West Pokot, KENYA. Earth Surface Processes and Landforms, 27: 1237―1247
doi: 10.1002/esp.423
|
|
Shi X Z, Wang K, Warner E D, Yu D S, Wang H J, Yang R W, d, Y. Liang, Shi D M(2008). Relationship between soil erosionand distance to roadways in undeveloped areas of China. Catena, 72(2): 305―313
|
|
scitech.people.com.cn/GB/25509/50262/50980/3553777.html (in Chinese)
|
|
Wischmeier W H, Smith D D(1978). Predictingrainfall erosion losses—a guide for conservation planning. USDA. Agricultural Handbook, 537, Washington, DC
|
|
Yu D Y, Pan Y Z, Long Z H, Wang Y Y, Liu X(2006). Value evaluationof conserving water and soil for ecosystem supported by remote sensedtechnique in Yunnan Province. Journal ofSoil and Water Consservation, 20(2): 174―178 (in Chinese)
|
|
Zhao J, Ge C P, Meng K, Wang Y X(2007). Spatialand temporal variability of landuse and soil erosion at HailunCounty. Bulletin of Soil and Water Conservation, 27(2): 85―89 (in Chinese)
|
|
Zhao X, Zhang P(2007). Analysisof landscape pattern on soil erosion in Dongzhen Reservoir with GIS. Journal of Soil and Water Conservation, 24: 43―47 (in Chinese)
|
|
Zhao Y S(2003). Analysis principle and methodology of remote sensedapplication. Beijing: Science Press (in Chinese)
|
|
Zhong X L, Guo C J, Fan H M, Zhou X L, Zheng C J(2008). Soil erosion spatialdistribution of various land uses in Liaoning Province. Research of Soil and Water Conservation, 15(3): 217―219 (in Chinese)
|
|
Zhou F J, Chen M H, Huang Y H(1995). Study on the soil loss predictionin Fujian Province. Journal of Soil andWater Consservation, 9(1): 25―30,36 (in Chinese)
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