Economic impacts of climate variabity on water use and production of wheat in the khouzestan province

In this study a research, there was conducted on the change regarding the climatic parameters oftemperature and rainfall along with their sequential quantitative changes in the province Khouzestan.Then the economic effect on water use and the net income of wheat, was assessed by applyingRicardian method. The results of the statistical analysis using Mann-Kendall test proved the existenceof the trend for temperature in a given time span, with an incremental pattern. but In the time span forrainfall, however , the trend showed a falling pattern in Ahvaz, rejecter the existence of such a trendin Dezful, showing also a low falling pattern for Shadegan station .The increasing pattern of the needfor water as with wheat concerning the areas Dezful, Ahvaz and Shadegan were 2106, 2500, 3129cubic meter in a century's time span, respectively the annual decrease in crop for wheat owing tosome climatic variations, too, for Dezful, Ahvaz and Shadegan were (as much as) 24587, 19291,18360, respectively. More over, the results of Ricardian model of study predicated that the rise intemperature and the fall in rainfall would cause about a reduction of 57863 thousand RLS. In thewheat crop output each hectare in a century's time.