Spatial variability of soil magnetic susceptibility under different water qualities for irrigation;

Based on the analysis results of magnetic susceptibility and chemical analysis of 54 paddy soil and 14 soil sections and chemical analysis results of the paddy seeds respective to paddy soil,the typical characteristics of the soil magnetic susceptibility in Chengdu economic region have been summerized systematically.

Using soil magnetic susceptibility combined with geochemical,seismic and remote sensing data,the authors made an integrated study of large area oil and gas exploration in the desert region of western Inner Mongolia.

Laboratory study on the mechanism and beheviors of saturated loess liquefaction;

Systematic laboratory tests on loess liquefaction are performed to study the testing methods,liquefaction mechanism,liquefaction criterion,influence factors and development of pore pressure and strain.

This paper has summarized in detail the research progress in loess liquefaction controversial in the academic field and not adopted in active practice.

The paper puts forward that the cave dwelling is not only a unique construction formation,but also the culture formation of gestating the strong folk-custom of loess plateau and incarnating harmonious development of the person-earth;the cave dwelling culture is the important part of the loess culture and person-culture tour resource needed to deeply explored.