Authors: L Zhang Ke Z Bai Man J Wang R Karthikeyan
Publish Date: 2015/10/24
Volume: 80, Issue: 2, Pages: 1213-1230
Abstract
Opencast mining and relevant land reclamation measurements can have a large impact on the surrounding landscape by altering vegetation topography and subsurface Mining processes will induce changes in runoff erosion surface drainage system and ecological functions In this present study Sanggan River SGR watershed with a surface area of about 1480 km2 which contains Pingshuo mine lying in the central part of this basin was chosen for applying RUSLE model RUSLE was applied in conjunction with geographic information systems and remote sensing to estimate erosion risks and assess impacts of mining on the channels and hydrologic system in order to implement better water and soil conservation and reclamation practices The RUSLE factors R K LS C P in 3 years 1986 2000 and 2013 were computed Erosion in the study area for each of those years was classified into six grades slight light moderate intense severe and aggressive rates Topographic factor LS and conservation practice factor P influenced the erosion to a greater extent and had higher correlation with soil erosion High soil erosion rate was observed in areas with high terrain alteration high slopes and land with sparse vegetation Hilly areas grasslands and the newly constructed mine dumps were more degraded with higher erosion
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