LULC versus Slope Failure: An Analysis of GIS Approach

Abstract

Highlands are important and taken seriously considered in development planning to avoid slope failure happened. Thus, GIS technique has ability to identify sensitive slopes using specific analyzes such as the analysis of space duplicity and slope analysis. This research study conducted to determined possible land used land cover in according to slope failure by using GIS approach. GIS techniques required several data for analysis, namely elevation data and contour maps, land used map data, original map data, and vegetation map data; which can be received from government department or agencies, height and topographic data maps, data from internet sources, and data from documentation includes publications. The selected area for this research study is Selangor State, which highlighted rapid development of land used for human activities. Accordingly, the first step will be entering all data into database, which involve with the physical and environment components; while the second step will be identification and preparation based on the data layers that required in the research study; and the third step are storing data into database for designed. The storage is referring to non-spatial data elements and geographical data. Results indicate the steepness parameter in determining the slope failure are 0 % to 15 % is no risk area, 15 % to 25 % are less risk area, 25 % to 40 % are moderate risk area, and more that 40 % are high risk area. GIS technique expressed three areas to have significantly high percentage to cause slope failure, namely Ulu Selangor, Gombak and Hulu Langat. As conclusion, the government and private sector should take note for not continues to suggest any development within the area for the sake of people quality life and properties.