| Author | Shivakoti, Binaya R. |
| Call Number | AIT Thesis no.AS-04-12 |
| Subject(s) | Soil erosion--Thailand, Northeastern
|
| 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. AS-04-12 |
| Abstract | The study p1imarily explored the different land-use successions for a comparative assessment of soil resistance to erosion for different cropping systems found in a typical rainfed agricultural watershed area of Nakhon Ratchasima Province, no11heastern Thailand. Four typical cropping systems (maize-fallow, mungbean-maize, maize-maize and cassava) were selected based on the duration of continuous cultivation on the same piece of land. Similarly, typical land management (residue management and tillage direction) practices were identified. A minimum dataset (MDS) was identified through the selection of a range of soil quality parameters, directly or indirectly related to soil erodibility. The MDS was later on used to derive Soil Resistance to Erosion Indices (SRE-1) which were then applied for the comparative assessment of soil erodibility for the selected cropping systems and management practices. Noticeable smaller, but significant, differences were seen among certain cropping systems. However not all cropping systems and management practices differ significantly among themselves in terms of SRE-1. K-factor, dispersion ratio and other texture-related parameters showed significant contribution to SRE-1, but as a contrast, soil organic matter and pe1meability parameters did not show a significant contribution to SRE-1. Hence, the study concluded that the location-specific differences seen in SRE-1 under selected land-use parameters were possibly due to the dominant effect of the clay in aggregation than other soil parameters. The study also revealed that even most inherent soil parameters are also subject to show changes to cause significant variation in SRE-1, even within a relatively short land-use history of 10-35 years. However, these differences are also the reflection of different biophysical and socioeconomic restrictions under which the existing cropping systems and associated management practices evolved over time. Hence, any land husbandry practices that could provide an optimum net economic return for the farmers would contribute to reduce degradation and improve soil quality in the area. |
| Year | 2004 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. AS-04-12 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Aquatic Systems(AS) |
| Chairperson(s) | Zoebisch, Michael A.; |
| Examination Committee(s) | Clemente, Roberto S.;Shivakoti, Ganesh P.; |
| Scholarship Donor(s) | Bangladesh Training Project;AIT Fellowship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2004 |