Environmental Change around the Qingtu Lake since 9 500 a BP;

Holocene Vegetation and Environmental Change at Qingtu Lake in the Shiyang River Drainage;

The enclosed Qingtu Lake lies in the environment-sensitive zone in Minqin County of Gansu Province, China,and the grainsize characteristics of its sediments indicate the variations of precipitation,hydrodynamics and the lake level changes.

The Eco-environmental Change and Causes of Qinghai Lake Watershed;

Researches on ecological value and protection of ecological environment of Qinghai Lake;

The Analysis of Ecological Values of Wetland Ecosystem in Qinghai Lake District;

On the source of radioisotope ~(137)Cs in the surface sediments of Lake Qinghai;

The distribution of long-chain alkenones in modern lacustrine sediments in the Lake Qinghai and lakes from the Qaidam Basin;

Area changes of Lake Qinghai in the latest 20 years based on remote sensing study;

Through indoor test,paving and survey in the test section of Taijiu Expressway,the paper analyzed the performance of Trinidad lake asphalt and its mixture,and proved its value for popularizing.

Analyses and strategies of the water tabel drop-off reason of the Qinghai lake;

Analyzing the group components and the saturate hydrocarbons in organic matters in the sediments from the bottom of the Qinghai Lake shows that the contents of total organic carbon in the sediments is high and that the sedimentary environment at the bottom of the Qinghai Lake is feeble oxidative.