Land use change and soil loss risk assessment by using geographical information system (GIS): A case study of lower part of Perak River

8th IGRSM International Conference and Exhibition on Geospatial & Remote Sensing

地球科学;计算机科学

Yusof, Fasihah Mohd^1 ; Jamil, Nor Rohaizah^1 ; Laew, Nyvee Inthano^1 ; Aini, Norfadilah^1 ; Manaf, Latifah Abd^1

Faculty of Environmental Studies, Universiti Putra Malaysia (UPM), Malaysia^1

关键词: Land conversion;    Land use change analysis;    Land use maps;    Land use type;    Land-use change;    Oil palm plantations;    Soil erosion potential;    Spatial analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/37/1/012065/pdf
DOI  :  10.1088/1755-1315/37/1/012065

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The developing mode of the nation enhance more land area being exploited to generate economy income. Objectives of this study were to analyse the land use changes from year 2010 to 2013 and soil erosion potential rate for year 2013 of lower part of Perak river basin. All of the spatial analysis work were carried out in the GIS environment using the ArcGIS version 9.3 software. Land use maps were obtained from Department of Agriculture and been digitized accordingly. The total area was 2914.91 km2and land use categories were clustered into various classes. Based on land use change analysis, oil palm plantation recorded some increment from year 2010 to 2013. While, area of forest depleting from 95.54km2to 86.01 km2indicating that the forest area were being exploited and shifted to other land use type. In the other hand, the rubber plantation decrease due to land conversion into palm oil plantation. Urban area showed some increment in coverage proving the current blooming number of population occurs rapidly. In context of cleared land, 2013 recorded higher coverage of cleared land compared to the year 2010 which recorded a shifting from 8.89km2in 2010 to 21.24 km2in 2013. By adopting the RUSLE model, in 2013, the soil erosion potential was categorised as very low (0-1 tons/ha/year) with some soil erosion hotspot spotted within the study area. The soil erosion range from very low to extreme class. A very low soil erosion potential class (0-1 ton/ha/yr) recorded the majority of 61% (1765.60 km2) of total area. The extreme classes (>100 ton/ha/yr) recorded about 18% (536.19km2) of the total area. According to the result, it can be concluded that the middle part of study area experience low to severe classes of potential soil erosion.