Water balance of the Small Aral Sea

Massakbayeva, Assiya; Abuduwaili, Jilili; Bissenbayeva, Sanim; Issina, Botagoz; Smanov, Zhassulan

doi:10.1007/s12665-019-8739-5

Cited by 13 publications

(10 citation statements)

References 11 publications

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“…The sharpest decrease in water area took place from 2006 to 2009, while an abrupt increase was recorded in 2010 for the east basin, which also led to the quick decrease in the entire Aral Sea. Although the precipitation in this region witnessed a slight increase during the period 2006-2009 [59], temperature was relatively high and increased by 1 to 3 • C, thus increasing lake evaporation [60]. Meanwhile, there was little runoff from the Amu Darya River in the south from 2006 to 2009, which flowed into the Aral Sea [61].…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, the North Aral Sea presented a subtle increase, apart from the year 2006. The abrupt rising water level was observed from 2005 to 2006 ( Figure 12) since Dike Kokaral was built between the North and South Aral Seas in the autumn of 2005 [59,63], which made the runoff from Syr Darya only flow into the North Aral Sea. The decreasing trends occurred for all seven months for the entire Aral Sea and two basins of the South Aral Sea, while there was an opposite trend for the North Aral Sea (Table 4).…”

Section: Discussionmentioning

confidence: 99%

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The Decrease in Lake Numbers and Areas in Central Asia Investigated Using a Landsat-Derived Water Dataset

et al. 2021

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: Although Central Asia has a strong continental climate with a constant moisture deficit and low relative humidity, it is covered by thousands of lakes that are critical to the sustainability of ecosystems and human welfare in the region. Vulnerability to climate change and anthropogenic activities have contributed to dramatic inter-annual and seasonal changes of the lakes. In this study, we explored the high spatio–temporal dynamics of the lakes of Central Asia using the terraPulse™ monthly Landsat-derived surface water extent dataset from 2000 to 2015 and the HydroLAKES dataset. The results identified 9493 lakes and significant linear decreasing trends were identified for both the number (rate: −85 lakes/year, R2:0.69) and area (rate: −1314.1 km2/year, R2: 0.84) of the lakes in Central Asia between 2000 and 2015. The decrease rate in lake area accounted for 1.41% of the total lake area. About 75% of the investigated lakes (7142 lakes), mainly located in the Kazakh steppe (especially in the north) and the Badghyz and Karabil semi-desert terrestrial ecological zones, experienced a decrease in the water area. Lakes with increasing water area were mainly distributed in the Northern Tibetan Plateau–Kunlun Mountains alpine desert and Qaidam Basin semi-desert zones in the east-south corner of Central Asia. The possible driving factors of lake decreases in Central Asia were explored for the Aral Sea and Tengiz Lake on yearly and monthly time scales. The Aral Sea showed the greatest decrease in the summer months because of increased evaporation and massive irrigation, while the largest decrease for Tengiz Lake was observed in early spring and was linked to decreasing snowmelt.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Decrease in Lake Numbers and Areas in Central Asia Investigated Using a Landsat-Derived Water Dataset

et al. 2021

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“…In 1986, the Aral Sea was divided into two parts: the southern part being the Great Aral Sea (South Aral Sea) and the northern part being the Small Aral Sea (North Aral Sea). After the division of the Aral Sea, the Syr Darya became the main water supply source of the Little Aral Sea [23], with the North Aral Sea located in Kazakhstan. Since the 1960s, the temperature in the Aral Sea basin has increased significantly, and the precipitation has also shown an increasing trend, although the overall increase is relatively small [38] (Figure 2).…”

Section: Regional Settingmentioning

confidence: 99%

“…More in-depth studies have been carried out on the shrinkage of the Aral Sea [22][23][24], the microbiome of the Aral Sea [25][26][27], and the ecological environment of the basin [28][29][30][31][32]. The research on lake sediments has become more abundant, e.g., environmental reconstructions of the salt water, geological structure, etc.…”

Section: Introductionmentioning

confidence: 99%

Organic Carbon Burial in the Aral Sea of Central Asia

Feng

Abuduwaili

et al. 2021

Applied Sciences

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The burial of organic carbon in lake sediments plays an important role in the terrestrial carbon cycle. Clarifying the current status of carbon burial in the lakes of Central Asia is of great significance for the application of carbon balance assessments. With the analysis of the total organic carbon and nitrogen and the carbon isotope and organic carbon burial rate in the core sediment of the North Aral Sea, the status and influencing factors of organic carbon burial over the past 70 years can be revealed. The results showed that the main source of organic carbon was predominantly from lacustrine aquatic plants. However, the contribution of terrigenous organic carbon increased from the 1950s to the 1960s. The burial rate of organic carbon in North Aral Sea sediments was consistent with the overall change in the regional temperature. The burial rate of organic carbon showed an upward trend as a whole with an average of 28.78 g·m−2·a−1. Since 2010, the burial rate of organic carbon has stood at the highest level in nearly 70 years, with an average of 55.66 g·m−2·a−1. The protection of a lake by human beings can not only significantly improve the lake’s aquatic ecosystem but also help to increase the burial rate of the lake’s organic carbon.

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“…The changes in the Sea volume were caused by natural processes, which occurred in the lithospheric plates of the Earth's crust. The level of evaporation and percolation of water into the ground, the water balance of the rivers flowing into the lake and the amount of precipitation in the region played an important role in the restoration of the lake and in the stability of its condition [Massakbayeva, 2020].…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of Geomorphological and Landscape Features Around the Small Aral Sea

Issayeva¹,

Yeshibayev²,

Łęska³

et al. 2021

J. Ecol. Eng.

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The ecological state of the Aral Sea remains an important issue affecting the overall state of the ecosystem in the region. Despite the fact that the state of the northern part of the sea or the Small Aral Sea can be described as stable, the southern part of the former sea continues to degrade. The area of degraded ecosystems around the Small Aral Sea is significant, and huge salt reserves remain the cause of further degradation of terrestrial ecosystems in the Aral Sea region. This study includes the results of geobotanical investigations researches of the dried bottom around the Small Aral Sea area. Five types of landscape-geomorphological formations of the dried-up sea were identified during the research. The creation of the formations took place during different periods of drying and depended on the element's of sea relief. The vegetation of these landscapes is represented exclusively by salt-tolerant species of xerophytic flora. In this case, the number of plant species in the plant communities of these landscapes is directly proportional to the concentration of salt in the soil.

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Water balance of the Small Aral Sea

Cited by 13 publications

References 11 publications

The Decrease in Lake Numbers and Areas in Central Asia Investigated Using a Landsat-Derived Water Dataset

The Decrease in Lake Numbers and Areas in Central Asia Investigated Using a Landsat-Derived Water Dataset

Organic Carbon Burial in the Aral Sea of Central Asia

Comparative Assessment of Geomorphological and Landscape Features Around the Small Aral Sea

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