CBD Fourth National Report - Azerbaijan (English version)

1.1.6.6. Climate changes and natural disasters
Country Study on Biodiversity and Fourth National Report
The Republic of Azerbaijan
Climate change is an ecological problem on a global scale that poses a recognized threat to all
ecosystems and associated biodiversity. Predictions suggest that climate change is likely to
have a negative impact on ecosystems in Azerbaijan and may result in increased flooding and
desertification, fragmentation of habitats, and species extinction. Over the last century the air
temperature in Azerbaijan has increased on average by around half a degree Celsius, with the
highest changes in temperature recorded from the Greater Caucasus and the Kura-Araz
lowland (0.5 - 0.6 o C) ans lowest changes recorded in Minor Caucasus and along Caspian
shoreline.
Based on global models of climate change, experts estimate that average temperatures in
Azerbaijan could increase by as much as 2 o C. Associated with this it is expected the incidence
of temperature extremes will increase, as will extreme weather events. Particularly important,
is a predicted decrease in humidity for much of Azerbaijan.
Such increases could affect the availability of water (particularly in arid regions), which could
in turn impact on irrigation, drinking water, and power production. Biological systems would
also be affected under this scenario, with predictions of changed ecosystem dynamics and
degradation of forest zones. The predictions suggest that the area of deciduous forest will
decrease by 20%, while coniferous woodland will increase by 12%, and scrub coverage could
increase by as much as 70%. The area of oak forest could reduce by 2-3%, although areas of
beech would increase by 15% and hornbeam by 19%.
The warmer climate could increase productivity for a number of plants, and this would favour
increased agriculture (including vineyards, cotton and fodder production). However, the
increase in evapo-transpiration from the soil could result in increased salination and erosion,
ultimately leading to desertification.
Insufficiency of water resources and their irregular distribution on areas and seasons lead to
problems in use of water in many cases. Only 5-20% of annual water flows of rivers fall on
vegetation period depending on the region. On the other hand, nevertheless water deficiency
is observed in low-water periods, but flooding and overflowing appear in abundant water
seasons. Enhancement of such occurrences was observed within the last years (Picture 1.1).
Picture 1.1. Tendency of floods observed in the years of 1999-2008
50
2009