Uzbek Scientists Trial Salt-Tolerant Plants to Revive Aral Sea Seabed
Field trials are underway on the desiccated seabed of the Aral Sea as part of a restoration initiative spearheaded by Uzbekistan’s Ministry of Ecology, Environmental Protection, and Climate Change. The goal is to identify plant species capable of surviving in saline soils and contributing to the rehabilitation of this ecologically devastated landscape. The study is led by scientists from the Research Institute of Forestry and supervised by Dr. Zinoviy Novitsky. One of the most promising candidates is Arundo donax, a species of reed grass typically found in wetter environments. Despite its usual habitat, the plant has demonstrated a remarkable tolerance for saline and arid conditions. Researchers discovered that groundwater in the test areas lies approximately two meters below the surface. Within its first year of growth, Arundo donax develops roots long enough to access this water, enabling it to survive and strengthen in the challenging environment. Dr. Novitsky noted that his team devised a specialized planting technique to improve the plant’s resilience. Root shoots were harvested from mature plants in regions with comparable soil conditions, such as Urgench and Karakalpakstan. When transplanted to the Aral Sea area, these shoots achieved a survival rate exceeding 90%. In addition to their depth, the roots of Arundo donax can spread laterally up to two meters, anchoring the soil and mitigating further land degradation. These trials, if scaled successfully, could play a pivotal role in combating dust storms and rejuvenating the Aral Sea region. Since 2021, Uzbekistan has planted more than 45 million trees across 1.9 million hectares of the dried seabed in Karakalpakstan. The country has also created six artificial lakes, replenished with water from the Amu Darya River, to foster biodiversity and support aquaculture. Moreover, dust filtration systems at major industrial sites and wastewater treatment facilities at eight plants have been modernized. Seven protected natural areas now span 3.7 million hectares in Karakalpakstan, several of which have been designated under UNESCO and the Ramsar Convention frameworks. Scientific efforts continue through the Aral Sea International Innovation Center, which is currently managing projects valued at over $630,000. By 2030, Uzbekistan aims to expand forest coverage in the region to 2.3 million hectares and restore vegetation on 80% of the dried seabed.