| Author | Chayanee Chandraprabha |
| Call Number | AIT Thesis no.NR-02-15 |
| Subject(s) | Soil erosion Thailand Nakhon Ratchasima
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of
Science, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. NR-02-15 |
| Abstract | The Universal Soil Loss Equation (USLE) was used to estimate soil erosion hazard in
Lam Phra Phloeng watershed, Thailand; using data from Landsat-TM in 1991 and 2000. The
R-factor (rainfall erosivity) was determined from the rainfall amount-erosivity relationship by
interpolation grid method using daily rainfall from Irrigational station in and near Lam Phra
Phloeng watershed 25 stations. The K-factor (soil erodibility) was determined using data
obtained by laboratory analysis of soil sample through the Nomograph of Land Development
Department (LDD) and associated researches near the study area. The LS-factor (slope length
and steepness) were determined from the digital elevation model (DEM) of the study area,
while the C-factor (crop and management) were determined from land use data, obtained from
Landsat-TM imagery and field survey. The P-factor (conservation practice) was not
determined in Thailand excluded transplanted paddy field. A raster based Geographic
Information System (GIS) was used to interactively calculated soil loss and map erosion
hazard. The results obtained soil loss about 59 % and 61 % of the total area in 1991 and 2000
respectively, particular in Tambon Wang Mee was estimated to have high risk of erosion. In
addition the daily rainfall and corn crop calendar were applied to estimate soil loss which
more than 67 % of the total corn ยท area contributed high erosion hazard. Land use and
management were the major factors associated with soil erosion and to less significant degree
of the topography. Furthermore, there is a need for research to determine appropriate P-factors
for local soil conservation practices, for instance terrace system and cropping system. |
| Year | 2002 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. NR-02-15 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Development and Sustainability (DDS) |
| Academic Program/FoS | Natural Resources Management (NRM) |
| Chairperson(s) | Apisit Eiumnoh; |
| Examination Committee(s) | Shivakoti, Ganesh Prasad;Zoebisch, Michael A. ;Shrestha, Rajendra Prasad ; |
| Scholarship Donor(s) | Royal Thai Government (RTG); |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2002 |