A Tentative Research on the Ranking of the Gaochang County of Xizhou Prefecture in the Tang Dynasty;

Calculation and Analysis for the Ecological Footprint of Changle County,Shandong Province;

Study on water resources carrying capacity in Changle County;

Based on the study in the water head area in Changle County,the paper emphasize the significance of protecting the water head area.

Analysis on Metallogenic Conditions and Prospecting Potential of Xishan Ag-Au Ore Occurrences,Changtu County;

Analysis of Soil Fertility and Fertilization Recommendation for Corn Field in Changtu County;

Content Evaluation on the Available Microelements in Typical Cultivated Brown Soil of Changtu County in Liaoning Province

Research on Species Diversity on Duobao Sandy Hill in Duchang County and Elementary Discussion on Its Protection;

Based on a description of the physical features and environmental geology of Duchang County,this paper deals with the characteristics and formation mechanism of flood hazard in Duchang County,and dis-cusses finally the ideas and measures of bringing the flood hazard under control.

Investigation of the freshwater fish infected with Clonorchis sinensis in Nanchang County

Based on the existing problems of the electromechanical equipment of the pumping stations in Nanchang county of Jiangxi province,some key is discussed.