TY - JOUR
T1 - Assessment of sediment yield in Thailand using revised universal soil loss equation and geographic information system techniques
AU - Rangsiwanichpong, Prem
AU - Kazama, So
AU - Gunawardhana, Luminda
N1 - Funding Information:
This study was supported by Advancing Co‐design of Integrated Strategies with Adaptation to Climate Change (ADAP‐T) of JST/JICA, SATREPS. This study was carried out by the Program for Leading Graduate Schools, Tohoku University and the “Inter‐Graduate School Doctoral Degree Program on Global Safety,” of the Ministry of Education, Culture, Sports, Science and Technology. The authors wish to thank the Thai RID for providing the sediment data.
Publisher Copyright:
© 2018 John Wiley & Sons, Ltd.
PY - 2018/11
Y1 - 2018/11
N2 - Soil is one of the most important natural resources on Earth. Information on soil loss is important to support agricultural productivity and natural resource management. Therefore, this research aimed to estimate and map mean annual soil erosion and sediment deposition using a geographic information system (GIS). The soil loss in each grid cell was analysed by the revised universal soil loss equation (RUSLE) model. The parameters of the RUSLE including rainfall, soil type, and land use were calculated in each grid cell from a digital elevation model with of 1-km2 resolution. Furthermore, sediment deposition was derived from the RUSLE model and used in GIS software to generate soil loss capacity maps. The results show that soil erosion occurred over all parts of Thailand, especially in the northern and southern parts due to the topography, geology, and land cover. The sediment was deposited in grid cells where the elevation was low, primarily near rivers. The results of this research support local land development policies that are implemented to control sediment yields during development.
AB - Soil is one of the most important natural resources on Earth. Information on soil loss is important to support agricultural productivity and natural resource management. Therefore, this research aimed to estimate and map mean annual soil erosion and sediment deposition using a geographic information system (GIS). The soil loss in each grid cell was analysed by the revised universal soil loss equation (RUSLE) model. The parameters of the RUSLE including rainfall, soil type, and land use were calculated in each grid cell from a digital elevation model with of 1-km2 resolution. Furthermore, sediment deposition was derived from the RUSLE model and used in GIS software to generate soil loss capacity maps. The results show that soil erosion occurred over all parts of Thailand, especially in the northern and southern parts due to the topography, geology, and land cover. The sediment was deposited in grid cells where the elevation was low, primarily near rivers. The results of this research support local land development policies that are implemented to control sediment yields during development.
KW - GIS
KW - Thailand
KW - deposition
KW - erosion
KW - spatial distribution
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U2 - 10.1002/rra.3351
DO - 10.1002/rra.3351
M3 - Article
AN - SCOPUS:85052846011
SN - 1535-1459
VL - 34
SP - 1113
EP - 1122
JO - River Research and Applications
JF - River Research and Applications
IS - 9
ER -
