Taking the Xiashu loess in Nanjing as an example,from the angle of material composition and physico- mechanical property,this paper discusses the engineering geological characteristics of Xiashu loess,thereby the basic understanding of the major cause for its change in engineering geological character being the soil forming effect is obtained.

This article give some examples,as the red soil of laterization,coastal plain of shallow hard layer and hard crust layer,discuss the geologic history which it come out and the course of pedogenesis and characteristics of perpendicular changes.

Research on the effect of farm manure on carbonate rock dissolution is important for pedogenesis of carbonate rocks and source/sink of atmospheric CO2.

Therefore, it is helpful for our learning biogeochemical cycling of mineral elements and its ecological and environmental effects, and of great importance for agricultural production and environmental protection to study behavior of mineral elements during weathering and pedogenesis of rocks and environmental quality.

Influences of weathering on organic matter of outcrop andcorrecting methods in Xining Basin;

Discussion on the Weathering Mechanism of Silicate Bacteria on Phosphorite;

All of the bauxites are formed by weathering without any exception.

The authors point out that two chemical kinds of groundwater in this aquifer are formed by the weathering process of anorthite and forsterite respectively,the authors stress that the CO2 partial pressure increase caused by groundwater contamination can accelarate the weathering process of silicate and alumi-nosi.

An apparent difference of loess and soil is that the loess units appear to be non-weathered or slightly weathered,whereas the soils have been subjected to relatively strong weathering process.

, natural, artificial and biochemical weathering processes, and dealt with the products formed.