Owing to the special geography location,Zhangjiakou and Chengde regions are endowed with special ecological function.

An Ecological Model of interplanting mulberry trees with pasture and farming crops to check wind and control sand was put forward,which was suited for Chengde and Zhangjiakou area of Hebei province.

Fine Evaluation and Practice of Oil Layers in Zhangdong area in Huanghua Depression;

The geological conditions of the Shahejie stratum in Zhangdong area of Dagang Oilfield are complex.

Comparative analysis of several assessment methods of groundwater vulnerability applied to Zhangji area of Xuzhou City;

Calculating method for wellhead protection zoning:Krijgsman-Lobo-Ferreira method and its application to Zhangji area,Xuzhou city;

Using data of the annual mean,the maximum,and the minimum temperature from 6 weather stations in Zhangye region from 1970 to 2004,climatic tendency rate,moving mean,Mann-Kendall,wavelet analysis,the spatial and temporal patterns of the climatic change in this region were analyzed.

The faunal composition of zhangye region butterflies were surveyed from 2000 to 2002.

In Zhangye region, there exist not only the problems of the water shortage and year after year of environment deterioration, but also the regional surplus of agricultural products and disadvantage of grain growing.

STUDY ON ASSESSMENT OF THE ECOLOGICAL SECURITY IN THE CONTINENTAL WATERSHEDS IN NORTHWEST CHIAN -A Case Study at the Middle Reaches of Heihe River Watershed, Zhangye Prefecture;

Analysis on Marginal Revenues Model of Water Resource Spacial Balanced Allocation ——Take Zhangye Prefecture as a Case;

Driving Factors of Land Use Change in the Heihe River: Case Study of Zhangye Prefecture;