Generally speaking,there were three main roles to be played by the United States during the rise and fall of the Sino-Soviet alliance: common threat,wedge driver,and balance keeper.

Spatial heterogeneity of soil erosion landscape and its driving factors in Hubei Province;

Studies on the change of cultivated land and its driving factors in Jinan;

An analysis of driving factors for land use change in minority region of Guizhou Province——With special references to Tianzhu county;

Analysis of driving factors to eutrophication in Taihu Lake;

Analysis on dynamical character of ecological footprint and its driving factors in Chongqing city

Regional ecological security has been paid more and more attention, and it’s of special significance to study the ecological security and its driving factors in ecological fragile areas.

Statistical analysis to regional land use structure and its driving forces;

In the case study of the Sangonghe watershed,changes and the corresponding driving forces of aquatic ecosystem services function have been investigated.

Then, according to the statistical data of city and county in Beijing area, the trend of water resources carrying capacity and its driving forces in Beijing during the last 22 years are discussed.

Analyze landscape pattern changes of xinglong mountains and driving force;

The spatial-temporal distribution of seasonal vegetation changes and their driving forces in the upper reaches of the Yangtze River

Macro-driving forces for TECC change were discussed quantitatively by principal component analysis.