| _ | yangguan | _ |
|---|---|---|
| Evaluation of Climate Change Impacts on Wetland Vegetation in the Dunhuang | yangguan | National Nature Reserve in Northwest China Using Landsat Derived NDVI |
| Reconstruction of the Water Cultivation Paleoenvironment Dating Back to the Han and Tang Dynasties Surrounding the | yangguan | Frontier Pass Using X- and L-Band SAR Data |