The effects of land use/land cover change (LULCC) on soil erosion and sediment transport using ARCSWAT model in the Upper Pasak River Basin, Thailand | |
| Author | Jaruporn Tosang |
| Call Number | AIT Thesis no.RS-11-12 |
| Subject(s) | Land use--Geographic information systems--Thailand--Upper Pasak River Basin Soil erosion--Geographic information systems--Thailand--Upper Pasak River Basin Sediment transport--Geographic information systems--Thailand--Upper Pasak River Basin |
| Note | A thesis submitted in pa1iial fulfillment of the requirements for The degree of Master of Science Remote Sensing and Geographic Information Systems, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. RS-11-12 |
| Abstract | Estimate of soil erosion and sediment transport variation with a temporal land use database reveals long-term fluctuations in Land Use/Land Cover Change (LULCC), as well as priority needs for soil and water conservation. The application of a multi-year land use database in support of ARCGIS Interface for Soil and Water Assessment tool (ARCSWAT) led to an accurate assessment of erosion in the upper of the Pasak river basin located in the north region of Thailand. The river basin covers approximately 1,523 km2 . The study area has land use/land cover change in the past with an increasing rate of crop cultivation and deforestation. The purpose of this study is to identify the effects of LULCC on soil erosion and sediment transport using ARcSW AT model. Moreover, the study aims to determine LULCC in 2001 and 2009 years using GIS techniques over upper Pasak river basin river basin, Thailand The ARcSW AT database was constructed with soil properties, climate and elevation data. Using land use change as parameters was simulated soil erosion and sediment transport. The effects of LULCC on soil erosion and sediment transport is importance in the upper Pasak river basin where the soil is highly erodible and forest conversion for agricultural cropping is in sedous condition. This study was also focused on how sediment yield was impacted when land use in the watershed resource is changed. The result was found that A.rcSW AT model can predict land use/land cover change in the watershed by using HRUs analysis. The largest decreased category was forest and the major increased category was agricultural. Land use change direction between 2001 and 2009 effect on sediment yield in the subbasin. When forest area converted to agricultural land 8.85 %., sediment yield increased about 50.61 % compared between 2001 (1,584.74 ton/ha) and 2009 (2,386.8 ton/ha.). |
| Year | 2011 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. RS-11-12 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Remote Sensing (RS) |
| Chairperson(s) | Tripathi, Nitin Kumar |
| Examination Committee(s) | Sutat Weesakul; Taravudh Tipdecho |
| Scholarship Donor(s) | Royal Thai Government Fellowship |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2011 |