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10.3. Asian Group
Assessment of drained in irrigated and Non-irrigated areas of Asian Group
countries, there are significant differences between countries (Figure 10.7). Taken into
consideration the available information in irrigated drained area, Pakistan has over 15
million ha drained area. This country is followed by Uzbekistan with 3 million ha
drained area. Other countries have close by 1 million ha and less than 1 million ha
equipped for irrigation drained area.
Figure 10.8 shows the distribution of soil salinity in the areas having fully
controlled drainage system under surface irrigation in the Asian Group countries. Soil
salinization demonstrates difference from a country to another. For example it is close
to 50% for the soils of Uzbekistan, 45% for the soils of Azerbaijan, 40% for the soils of
Turkmenistan and 30% for the soils of Iran, Kazakhstan and Turkey.
Figure 10.7. Distribution of Drainage Areas in Some Asian Group Countries
Source: AQUASTAT, 2013