Prediction and Index Decomposition of Suitable Arable Land Quantity in Guangyuan City;

Study on the Small Watershed Runoff and Sediment and Nutrient Loss in Wanchanggou of Guangyuan City;

Study on Dynamic Soil Nitrogen in Different Vegetaion Restorations in Guangyuan City;

Influences of Defarming-and-reafforestation Scale on Grain Security in Shizhong District of Guangyuan City;

Considerations of Carrying Out the Sustainable Developmeat Strategy in Guangyuan;

Exploring Forest Eco-tourist of Sichuan Guangyuan;

Consider on Development of Forest Tour in Guangyuan City;