Impact of water reservoir on characteristic and distribution of saline soil in discharge area: A case study of Lam Chiang Krai water reservoir, Amphoe Non Thai, Nakhon Ratchasima
2000
Kan Chindaprasoet | Adisak Phopan (King Mongkut's Institute of Technology Ladkrabang, Bangkok (Thailand). Faculty of Agricultural Technology. Dept. of Soil Science)
Impact of water reservoir on characteristic and distribution of saline soil in discharge area was studied. The Lam Chiang Krai water reservoir in Amphoe Non Thai, Nakhon Ratchasima Province was selected as a study area. The field study, especially, soil electrical conductivity at 0-30, 30-100 and 200 cm was observed. The soil sample at the depth of 0-30 and 30-100 cm were collected for laboratory analysis. The result showed that the soil salinity in discharge area were dractically increased. The laboratory analysis showed that the soil texture mostly were clay loam and had a finer texture with depth. The soil reaction mostly were neutral (pH 6.6-7.3) to strong alkaline (pH 8.5-9.0). Cation exchange capacity were high (13.68-32.40 cmol/kg). Sodium absorption ratio (SAR) was range from 7.74-22.96. The soil was classified to be saline soil, sodic soil and saline-sodic soil depending on its SAR.
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