Pavement snow and icing are worldwide problems,but effective countermeasures are just beginning to be developed in China.The two most common snow and ice removal methods are mechanical clearance and c
The normalized difference vegetation index(NDVI)is used extensively to describe vegetation cover and ecological environment change.The purpose of this study was
Sandy desertification in the Shule River Basin has expanded dramatically during the past 30 years.We evaluated the status,evolution,and main causes of sandy desertification by interpreting Landsat ima