Research Article

Meteorological Drought, Hydrological Drought, and NDVI in the Heihe River Basin, Northwest China: Evolution and Propagation

Figure 1

The upstream and midstream in the Heihe River Basin with meteorological and hydrological stations and digital elevation map (a), land use and land cover (LULC) in 2011 (b), and vegetation types (c).
(a)
(b)
(c)