Analysis of the Hydrological Environment in Agricultural Regions Using the Method of Environment Traceability.

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This study examined hydrological environment in irrigated area, especially on dynamics of water and salt using environmental traceability method. The water quality analysis confirmed that environmental tracers, D/H, δ^<18>O, and ^<87>Sr/^<86>Sr, can be used as tracer of surface water and groundwater in irrigated area. It proved that the ^<87>Sr/^<86>Sr can be used as tracer of salt. Quantitative analysis using the ^<87>Sr/^<86>Sr revealed that the irrigation area transitioned from primary salinization formed by old seawater to secondary salinization of salt from fertilizer and irrigation water due to anthropogenic agricultural process.