The vegetation degradation, drought and other environmental issues in the Mongolian Plateau have been as the hot spot in the study of the climate change and the ecological environment changes in Northeast Asia. However, it is lack of study focused on building the stable drought monitoring model and their spatio-temporal differences between Mongolia and Inner Mongolia. Based on the NOAA AVHRR NDVI-PathFinder 10d remote sensing data of 1981-1999 and MODIS vegetation index and the surface temperature 16d data of 2000-2012, the knowledge service inverted Temperature and Drought Vegetation Index (TVDI) by the Ts-NDVI general space, their spatio-temporal distribution and changes were calculated.
With the WebGIS technology, the application of Mongolian Plateau drought monitoring annual spatial distribution has been released. This application shows Mongolian Plateau drought monitoring annual spatial distribution from 1981 to 2012. MapServer is used to release Web Map Service (WMS) referring the international specification. The Combination of data and MapBox tiles has been used by OpenLayers to generate the map view. When the app page opened, the satellite map image could be visualized as the map service. In the map operation on the right side of the app page, users can select different years to view the corresponding data map.
Selecting GIS data operation in the sidebar navigation, users can see the corresponding option of year and click the drop-down arrow to display the year lists, including the years from 1981 to 2012. In the bottom right corner of the app page, users can see application-related documents and information which are classified by label control. The user can choose more to get more readings.