22 Oct Solute Variation in Some Minor Water Sheds, Kerala, India
Results of a study of solute (DL) and suspended load (SL) discharge and their characteristics and transformations due to anthropogenic actions, in some of the minor (area = <2000 Km2) and adjacent rivers in southern Kerala like Vamanapuram ar., Ithykara ar., Kallada ar. and Achankovil ar. are examined here. The load characteristics amply demonstrate consequences of a very “high degree” of human action these river basins and processes have been subjected to. “Phenomenal” changes have occurred in respect of landcover-landuse parameters due to conversion of large chunks of land into plantation (monoculture) and agricultural lands, which warrant application of chemical fertilizers, soil conditioners, fungicides and / or insecticides. Addition of organic and inorganic chemicals into the physical system resulted in considerable modification of characteristics as well as levels of DL. Estimates of sediment yield, in these minor basins, varies from 72 to 227 Ton Km-2 Yr-1.
[scribd id=21436053 key=key-2513btsj0pi52qa59f8p mode=scroll]