title: Soil erosion assessment and its correlation with landslide events using remote sensing data and GIS: a case study at Penang Island, Malaysia.
abstract: In this paper, an attempt has been made to assess, prognosis and observe dynamism of soil erosion by universal soil loss equation (USLE) method at Penang Island, Malaysia. Multi-source (map-, space- and ground-based) datasets were used to obtain both static and dynamic factors of USLE, and an integrated analysis was carried out in raster format of GIS. A landslide location map was generated on the basis of image elements interpretation from aerial photos, satellite data and field observations and was used to validate soil erosion intensity in the study area. Further, a statistical-based frequency ratio analysis was carried out in the study area for correlation purposes. The results of the statistical correlation showed a satisfactory agreement between the prepared USLE-based soil erosion map and landslide events/locations, and are directly proportional to each other. Prognosis analysis on soil erosion helps the user agencies/decision makers to design proper conservation planning program to reduce soil erosion. Temporal statistics on soil erosion in these dynamic and rapid developments in Penang Island indicate the co-existence and balance of ecosystem.
authors.affiliation: Institute for Cartography, Faculty of Forestry, Geo and Hydro-science, Dresden University of Technology, 01062 Dresden, Germany. Biswajeet.pradhan@mailbox.tu-dresden.de
authors.forename: Biswajeet
authors.initials: B
authors.lastname: Pradhan
authors.forename: Amruta
authors.initials: A
authors.lastname: Chaudhari
authors.forename: J
authors.initials: J
authors.lastname: Adinarayana
authors.forename: Manfred F
authors.initials: MF
authors.lastname: Buchroithner
mesh_terms: D003247:Conservation of Natural Resources / Q000379:methods; D004784:Environmental Monitoring / Q000379:methods*; D040362:Geographic Information Systems; D055593:Geological Phenomena; D055876:Landslides / Q000706:statistics & numerical data; D008296:Malaysia; D058998:Remote Sensing Technology; D012987:Soil / Q000737:chemistry*
chemical_list: D012987:Soil