Journal of Environmental Biology

Desertification risk in Kakheti Region, East Georgia

Tsisana Basialashvili¹, Lia Matchavariani²* and Lamzira Lagidze³

¹Institute of Hydrometeorology, Georgian State Technical University, Tbilisi, 0112, Georgia

²Department of Soil Geography, Tbilisi State University of Iv. Javakhishvili, Tbilisi, 0179, Georgia

³Department of Hydrometeorology, Tbilisi State University of Iv. Javakhishvili, Tbilisi, 0179, Georgia

*Corresponding Authors Email : likageotsu@hotmail.com

 Publication Data

Paper received:

04 July 2013

Revised received:

20 October 2013

Re-revised received:

18 June 2014

Accepted:

22 September 2014

Abstract

Desertification or land degradation in drylands is caused by various factors. The most important of these is climate change, a significant global ecological problem. Desertification, like erosion, as an environmental process of ecosystem degradation, is often caused by human activity. It is a common misconception that droughts cause desertification. Well-managed lands can recover from drought if the rains return. These practices help to control erosion and maintain productivity during periods when moisture is available. Traditionally, the most vulnerable territories considered under the threat of desertification in Georgia is Kakheti region (East Georgia), which has been selected as one of the priority investigation area. In Eastern Georgia, intervals of atmospheric precipitation do not coincide with the phases of water demand of plants. In recent decades as a result of more frequent droughts in Kakheti, the region has already lost hundreds, thousands of hectares of fertile land. Based on the contemporary climate warming projections, the temperature is expected to increase and precipitation to decrease. This will lead to an increase in evaporation and reduction of river flow. Under such conditions the danger of desertification is evident. To mitigate the negative effects of desertification, it is recommended to put forward set of adaptation activities through rehabilitation of water use systems, prevention of? loss of water,? reconstruction and expansion of irrigation canals, accumulation of unused autumn-winter river water and spring floods in reservoirs, developing an optimal scheme of distributing water resources among water users, device windbreaks and work on breeding of drought resistant varieties, preparation of water volume forecasts of? rivers and their role in planning of water use; application of apply drip and sprinkler irrigation, using artificial precipitation following increase as a result of active influence on clouds. All these activities will provide means for suspending desertification process, create ecological safety for the environment and improve the economic wellbeing of population.  

 Key words

Desertification, Drought, Runoff forecasting, Water demand, Water supply

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