Iran'S Agriculture In The Anthropocene

The anthropogenic impacts of development and frequent droughts have limited Iran's water availability. This has major implications for Iran's agricultural sector which is responsible for about 90% of water consumption at the national scale. This study investigates if declining water availability impacted agriculture in Iran. Using the Mann-Kendall and Sen's slope estimator methods, we explored the changes in Iran's agricultural production and area during the 1981-2013 period. Despite decreasing water availability during this period, irrigated agricultural production and area continuously increased. This unsustainable agricultural development, which would have been impossible without the overabstraction of surface and ground water resources, has major long-term water, food, environmental, and human security implications for Iran.Plain Language Summary Given the heavy reliance of the agricultural sector on water availability, it is important to examine if Iran's agriculture has been impacted by water availability changes in recent decades. The investigation of the long-term impacts of natural water availability changes on agricultural activities in the country during the 1981-2013 period revealed that the agricultural sector in Iran continued to expand regardless of decreasing water availability in the country. This expansion was facilitated by the excessive use of nonrenewable water resources which has significant environmental and socioeconomic implications.Key PointsTrends in Iran's agricultural production and area did not follow natural water availability changes due to meteorological variability Iran's agricultural production continuously increased despite water availability reduction during 1981-2013 The unsustainable growth of Iran's agriculture has important water, food, environmental, economic, and human security implications