The estimation and mapping of the grassland and
desertification status in the UVS NUUR HOLLOW using satellite and round data
D.Dash, G. Tsolmon, M. Badarch, Y. Bayarjargal
National Remote Sensing Centre, Mongolia
Khudaldaany Gydamj-5, Ulaanbaatar
Abstract
Uvs Nuur hollow is one of most important rangeland areas in Mongolia. This area is recently thereat ended by land degradation caused by overgrazing and the felling of trees for fuel.
In this presentation reflects the results of application of remote sensing techniques for estimation and mapping of desertification process and grassland over Uvs Nuur hollow of Mongolia using Landsat TM and ground observation data.
1. Introduction
Pasture vegetation resources of the most part of the territory of Mongolia have Gobi desert pasture, steppe pasture, and some of them can be used as cut grass for the fodder. Besides, some can also be used to collect medicinal plant. There exist problems in the development and utilization of pastures. For example the productivity of most of the pastures is low, pastures have been overgrazed universally, more pastures have deteriorated seriously.
To utilize pasture vegetation resources particularly, in the Gobi desert and the steppe region of Mongolia, it is necessary to utilize rationally protect and improve them. Monglia has many head of animal. Therefore, the studies of the impact of scientific task for estimation of the ecological condition of the grassland and its change for the territory of Mongolia.
Studies of the grassland type and it's environment using the satellite and ground data.
Mongolia is facing the desertification process. The desertification problem in Mongolia has resulted from degradation of vegetation cover, wind erosion, water erosion, soil salination, overgrazing, cutting of the trees. (D. Dash, T. Baasan and others, 1991). The map of the desertification status covers only for round area of the Uvs Nuur lake.
The climate and grassland are appearing vertically different distribution.
