Substance Source of the Holocene Aeolian Loess-soil and Its Depositional Dynamics in Yuzhou, Henan Province;

In order to remediate oil contaminated soil in loess region of North Shaanxi Province,experimental studies on degradation of oil polluted soil were carried out using remediation techniques of optimized in-situ native microbial communities combined with physical chemistry methods.

Purification and migration characteristics of arsenic in loessial soil;

By the leaching experiment of soil column, the purification of loessial soil to Cr(Ⅵ) and its migration characters were studied from dynamic researches.

In this paper adsorption characters of Cr(Ⅲ) and its trend that C r( Ⅲ) translated into Cr(Ⅵ) and influence factors were studied by isotherm adsorp tion and transform rate experiments in different layers of loessial soil that we re including cultivated horizon, plow pan, argillic horizon and calcic horizon.

Carbon isotope characteristics of loess-paleosol sequences derived from phreatic section on Chinese Loess Plateau;

The analytic results of the samples were correlated with those of the samples taken from Quaternary loess-paleosol of the Loess Plateau,modern dust fallouts in Beijing and fluvial deposits.

A total of 34 loess-paleosol samples from the Luochuan and the Xifeng sections in the Loess Plateau, northern China, were separated into sand, silt and clay fractions,and their mineral compositions were analyzed.

Evaluation of parameter models for estimating loess soil particle-size distribution;