Interpretation of grassland desertification terms

1, overgrazing, land reclamation, climate change and other reasons, make grassland vegetation destroyed, unable to grow, update and reproduce normally, resulting in land desertification, forming Gobi, and finally forming desert, which is called grassland desertification.

2. In the historical period, the grassland desertification in northern China was mainly caused by immigrants.

3. Desert refers to an area with dry climate, scarce precipitation, large evaporation and poor vegetation, or land with almost no vegetation and good soil development. Its climate changes dramatically, and the influence of the wind is also great. According to landform and surface composition, it can be divided into rocky desert and rocky desert, gravel desert or Gobi desert, desert, muddy desert or clay desert and salt desert.

4. Desert is the abbreviation of sandy desert, which is a specific area covered by aeolian sand and sand dunes on the earth, that is, a desert zone only distributed in arid and extremely arid areas.

5. Land desertification refers to land degradation, and the final result is mostly desert, so it is also called "desertification". 1992 The United Nations Conference on Environment and Development defined the concept of desertification: "Desertification refers to land degradation caused by drought disasters in arid, semi-arid and semi-humid areas due to climate change and unreasonable human economic activities".