Paleosol Of Paleoenvironmental Implications And Function Of Culture Heritage At Yangshao Culture Village Site

This research was based on the previous archaeological achievement of ancientculture and quaternary paleoclimate in yellow river basin. Profiles within remains ofhumanity’s culture and without humanity’s disturbance were excavated respectively.They were called cultural and natural profile in short. Soil samples of both profileswere analyzed in particle-size, magnetic susceptibility, chroma and pollen, especially,samples of cultural profile were analyzed in phytolith. The results showed that climateproxies such as particle-size and etc can scientifically reflect the changes ofpaleoclimate in some degree, but the changes reflected by just one climate proxy wereone sided. Only by comprehensive analysis of various climate proxies, the reasonableand correct changes can be rebuilt. Meanwhile, some climate proxies were found thattheycanreflect ancient humanity’s activities. Whenthe value of magneticsusceptibility was especially high, it can sensitively reflect the impact of using fire onthe soil, the characteristics of phytolith can effectively reflect the ancient agricultureand diet.Both profiles had different advantages. The natural profile can accurately tell thechanges of Holocene climate in detail, the changes can be divided into three phases,early warming, middle warm wet, late dry cold. The cultural profile can clearly tellthe information of humanity’s activities such as high-frequency and large-scale ofusing fire and the crops of foxtail millet broomcorn millet and rice. Both profiles werecompared at the same chronologic order, it was founded that the changes ofpaleoclimate had a deep impact on the changes of Yaoshao culture. Generally culturewas born and developed under the warm and wet climate, while faded and died underthe dry and cold climate. The degree of response of culture to the changes ofenvironment depended on the degree and speed of environmental deterioration andthe ability of human resisting the deterioration. When human had enough time andenergy to adapt to the change, the culture would be promoted, otherwise human had tomove to other places to find food, the culture would fade or die.In addition, qualitative and quantitative index system and evaluation standard ofthe soil function of culture heritage were preliminary studied. On the basis of graph ofplanning protection in Yangshao culture village site, this function was evaluated. Fivedegrees of range were divided, each degree had corresponding of intensity ofprotection and value of scientific research, which can provide advice for practicalwork.