Abstract:
Through measuring and comparing the magnetic susceptibility dates of loess profile in Guanzhong plain, and according to regression equation the temperature, precipitation, the climate elements in this area were calculated. The results show that the average temperature in the middle Holocene is around 13.00℃. The temperature is generally lower than estimated by other information. The precipitation is close to estimated by other information. Therefore, it should be added 1.50℃ to the calculations in middle Holocene. The precipitation can basically represent the fossil precipitation; the calculations in the climate elements Holocene should be based on the average high of magnetic susceptibility the result of representativeness is weak when they are based on maximum, minimum and average of magnetic susceptibility. Since the influence of clay materials here, the high calculations of magnetic susceptibility in fossil soil do not represent the climate elements of this layer, but represent the most warm and humid climate elements- of the upper layer.
