Abstract:

Based on the temperature, precipitation and the main agrometeorological disaster data from 1953 to 2008 in Benxi, according to the principle of agrometeorology and index of agrometeorological disaster, the meteorological elements were combined, statisticed and analyzed. The variability features were studied by applying the method of climate tendency rate and Mann-kendall. The result that the temperature changes presented increasing trend. Precipitation changes showed a decreasing trend. The tendency ratio of annual mean temperature was 0.29℃/10a, The tendency ratio was biggest for 0.61℃/10a in winter. The tendency ratio of annual precipitation was -26.11 mm/10a, precipitation tendency ratio was 2.88 mm/10a in spring, while it was decreasing in other seasons, and the tendency ratio of rainstorm was decreasing, but the disaster loses increases the tendency. The flooding frequency reduced, the arid frequency increased. Through studies to the climatic change and the main meteorological disaster, for the reasonable development climatic resource, the adjustment industrial structure provided the science the meteorological basis.