A Record On The Climate Change During Holocene In The Eastern Of Guanzhong

The Holocene climate period is a fast developmental stage of human culture. In order to properly predict the future development trend of the environment, prompting human and the natural environment, Further research of Holocene loess-ancient soils preserved sequence for our environment climate and rebuilt the Holocene climate has the extremely significance.This thesis on the loess plateau in guanzhong east junggar two loess profile as the research object, using with definite physical meaning of magnetic susceptibility, particle size for climate substitution index, establish the holocene since climate parameters recorded sequence, and with other global typical the holocene climate change sequences comparison, which reveals the holocene regional climate change since characteristics, discusses the evolution process of the east Asian monsoon climate, to predict the future changes in the environment provides scientific basis for the basis.10～9.4kaB.P., enter the Holocene, this was a period in which the temperature risen and the precipitation increased, but it was mainly still dry and cold; 9.4～8.2kaB.P., this was a period in which the temperature was the highest and the precipitation was the greatest; 8.2～7.9kaB.P., this was a stage of middle Holocene period, it was a small cool temperatures, this was a dry and cold period in which the temperature was the lowest; 7.9-4.8kaB.P., this was another warmth and humidity period in which the temperature risen and the precipitation decreased, This period was continuation of favorable climate; 4.8～3.5kaB.P., his was a dry and cold period in which the temperature was the lowest; 3.5～2.9kaB.P., warmth and humidity period, the temperature risen and the precipitation decreased; Since 2.9kaB.P., this was a dry and cold period in which the temperature fell, the precipitation decreased.