Geography of Uzbekistan Kazakhstan, also yielded about 60% of the total volume of Central Asia's emissions of harmful substances into the atmosphere. Because automobiles are relatively scarce, automotive exhaust is a problem only in Tashkent and Farghona. The reduction of water in Uzbekistan has resulted in soil degradation, and the spread of the salt from the evaporated Aral Sea has contaminated the surrounding soil. The soil has lost much of its water due to the increased surface irrigation. The irrigation of farmlands with water from the Aral Sea has resulted in increased salinization of the soil, causing the farmland to be less productive
Carolyn Drake in the once vibrant region of central Asia that lies between the Amu Darya and Syr Darya rivers that once nourished it. The region, encompassing Turkmenistan, Uzbekistan, Tajikistan, Kazakhstan and Kyrgyzstan, was transformed when the rivers were diverted for cotton irrigation by the former Soviet Union. Drake's resulting self-published book, "Two Rivers" (2013), was financed via Kickstarter; it was well received by Sean O'Hagan. For Jeffrey Ladd, the book's design (by Sybren Kuiper), notably the way some photographs on recto pages have their right edges on the verso, detracted from it. She spent seven years visiting Xinjiang in western China