Integrated of soil and water conservation planning in Moungphlong subwatershed, Amphoe Phanom Sarakham, Chachengsao
1995
Sathaporn Jaiarree (Land Development Department, Bangkok (Thailand))
Study on integrated soil and water conservation planning was implemented in the area of Moungphlong Subwatershed Tambol Kaohinsorn, Amphoe Phanom Sarakham, Changwat Chachengsao which is under the implementation of Khao Hin Sorn Royal Development Study Center. This study aimed at solving the problem of soil erosion and inappropriate irrigation which were problem of farmers in area. The total area of the study was 514.5 rai. The collected data included physical characteristic of the area example soil characteristic hydrological data ect. through the data of socio-economic condition and these data were analyzed and used to formulate the intermediate, intensive and implement were established for the study area which each plans had different objective and practical. Each conservation plan was evaluated for erosion control and socio-economic feasibility. The results of this study revalued that 76.68 percent of the total area was affected by moderately soil erosion (5-20 ton/rai/year). The Universal Soil Loss Equation (USLE) was used to evaluate the rate of soil loss for each conservation plan the results disclosed that when four conservation plans were operated on the study area, the rate of soil loss would be decreased to 75.36 97.61 97.61 and 96.66 percent for simple, intermediate, intensive and implement plan respectively for young fruit trees, as compared with that without conservation plans and to 86.64 98.33 98.33 and 97.77 percent respectively for mature. For economical evaluation, the results of analysis revealed that the Net Present Value (NPV) were 3,483,559 21,104,379, 21,177,252 20,458,860 and 11,911,422 baht for without conservation, simple, intermediate, intensive and implement plan respectively and the Benefit Cost analysis (B/C ratio) was 1.79, 2.33, 2.36, 2.25 and 2.25 respectively.
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