Investigation of hydrate solution salinity was conducted for the chloride type saline and alkaline soil of Yellow River抯 lower reaches terrain in summer from 1997 to 1999.

The water chemical features for ponds of chloride type saline and alkaline soil located on the bank of the Yellow River, Daluhu lake of Gaoqing country, were measured systematically from April, 1997 to April, 1998.

In this paper,a classification method based on multi_source data is performed in order to survey the extent of land salinization rapidly.

As a particular mechanism of land salinization, freeze thaw action is differing from salification process by violent evaporation, it has distinct control action on springtime salification, but it has not been much accounted adequately.

There is a certain degree of abandoned phenomenon in the oasis,at the same time the land salinization phenomenon of the north Mosouwan oasis is evident.

Study on Soil Salinization Spatial Distribution Based on the LUCC in Typical County of Western Jilin Province;

Exploitation and development of agriculture in Daqing City have been restricted by soil salinization.

By analyzing the typical irrigated area of Tarim River basin,it was showed that the ration of ecological water demand that the main stream basin of Tarim River demand to prevent tilth salinization was about 1500m~(3)/·hm~(-2),and the.