The experience of land cover change detection by satellite data

Spivak, L.; Vitkovskaya, Irina; Batyrbayeva, Madina; Terekhov, A.G.

doi:10.1007/s11707-012-0317-z

Cited by 8 publications

(4 citation statements)

References 5 publications

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“…The arid climate of Central Asia, including Kazakhstan, makes this territory very dependent on winter snow accumulation [5]. Snow is an important water resource, which provides the following: activity of spring floods [6]; humidification of arable land in the first half of the growing season and accordingly parameters affecting the state of vegetation cover and the yield of grain crops on the rain-fed agriculture [7][8][9]. The volume of runoff of large rivers of the region (River Ile, River Kara-Ertis) and the work of the hydraulic units located in transboundary river basins [10][11] is significantly affected by the snow accumulation in mountain conditions (the territory of Kazakhstan includes parts of Tien Shan, Jungarian Alatau and Altai).…”

Section: Introductionmentioning

confidence: 99%

Opportunities of short-term weather forecasts data in the environmental monitoring of the Kazakhstan

et al. 2020

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This paper considers the possibilities of assimilation of FEWS NET (Famine early Warning System Network) products in natural resource monitoring of the territory of Kazakhstan in the cold period. With an area of 2.7 million km2, Kazakhstan is located in the center of Eurasia in the arid zone, and snow is one of the most important water sources in the first half of the vegetation season. The products “Snow Depth”, “Temperature” and “Precipitation” developed for Central Asia are based on model meteorological data, including short-term weather forecasts. This information, presented in the form of regular matrices, has several advantages in efficiency and spatial detailing over direct ground (remote) measurements of meteorological parameters. The use of FEWS NET products for the environmental monitoring of the entire territory of Kazakhstan or its separate parts is of benefit for assessing the current situation on snow reserves, weather regimes and prospects for spring snowmelt.

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Section: Introductionmentioning

confidence: 99%

Opportunities of short-term weather forecasts data in the environmental monitoring of the Kazakhstan

et al. 2020

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“…These airborne pollutants are a potential health risk for the region surrounding this man-made desert [6,7,15,20] and require a thorough monitoring. Due to the remoteness and size of the affected area of more than 1.5 million km² spread out predominately over three E3S Web of Conferences 99, 03005 2019https://doi.org/10.1051/e3sconf/20199903005 CADUC 2019 countries (Kazakhstan, Turkmenistan, Uzbekistan) most studies focus on remote sensing as their primary data for the monitoring of the aeolian sediment transport [21][22][23][24]. But while satellite data can provide an area-wide quantification of the transported material and can also provide insights into the qualitative nature of the airborne dust due to its spectral characteristics, on-site measurements of the dust deposition and laboratory analyses of its mineralogical and chemical properties are needed to complement such a monitoring.…”

Section: Introduction and Study Designmentioning

confidence: 99%

Physical and Chemical Characterization of Dust Deposited in the Turan Lowland (Central Asia)

et al. 2019

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The desiccation of the Aral Sea ranks among the largest man-made ecological catastrophes and has become a global symbol for the overexploitation of limited resources and the environmental and socio-economic consequences caused thereby. Formerly the fourth largest inland lake, large parts of the Aral Sea have been transformed into a salty desert – the Aralkum. The exposed lake bed sediments are subject to wind erosion, resulting in white sand and dust storms which have been tracked over several hundred kilometres using remote sensing images. Dust deposition data, on the other hand, requires excessive field work over prolonged periods of time and thus is scarce. But this kind of ground-based monitoring provides valuable insights into the physical and chemical composition of the transported material. The dust transported from the Aralkum contains, among other things, salts, heavy metals and agrochemicals deposited in the Aral Sea over decades. It can contribute to soil salinization, damage crops and technical infrastructure and impair the human health in the region surrounding the Aralkum, making the analysis of the aeolian dust deposition highly relevant. In the study presented here passive dust deposition data from 23 meteorological stations in the Turan lowland have been collected between 2003 and 2012 and analyzed for their grain size, mineralogical, and chemical characterization in order to identify the influence the newly formed Aralkum has on the Central Asian dust dynamic.

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“…Due to the overexploitation of the Central Asian water resources [1], the Aral Sea, once the fourth largest inland lake worldwide, has been transformed into a salty desert -the Aralkum -which, with an area of more than 60,000 km² has become a major source for the aeolian transport of lake bed sediments [2][3][4]. The negative impacts of this manmade desert on the surrounding region have been widely debated and satellite images impressively show the white plumes of salty dust blown from the Aralkum into the Turan lowland [5]. But even though the Aral Sea syndrome and the dramatic satellite images have been in the spotlight of the scientific and public discussion for years, only few projects have analyzed the aeolian sediment transport in detail [6].…”

Section: Introduction and Study Designmentioning

confidence: 99%

Impact of the Aral Sea Syndrome - the Aralkum as a Man-Made Dust Source

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et al. 2019

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Ground based dust monitoring is an important tool for the long-term monitoring of aeolian sediment transport in Central Asia as it provides valuable insights into the spatial and temporal dynamics of dust deposition as well as grants access to the transported material for further analyses. Between 2006 and 2012 such a monitoring was carried out in the Turan lowland to analyze the effects of the newly formed Aralkum. The detected spatial and temporal dust deposition variability was significant and encourages further studies. The dust deposition increased over time, which correlates with a decreasing trend in precipitation, increasing wind speeds and a shift towards northern winds. More than 50% of all dust samples collected exceed the health based deposition threshold and the most intense dust storm events reached ground level deposition rates of up to 150 g/m2 per hour. This study showed the impact of the Aralkum, but also that the Kyzylkum is a far more active dust source. With regard to climate change and an increasing aridity in the region it can be expected that the aeolian dust transport will continue to increase, making a wide-spread monitoring program even more important.

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The experience of land cover change detection by satellite data

Cited by 8 publications

References 5 publications

Opportunities of short-term weather forecasts data in the environmental monitoring of the Kazakhstan

Opportunities of short-term weather forecasts data in the environmental monitoring of the Kazakhstan

Physical and Chemical Characterization of Dust Deposited in the Turan Lowland (Central Asia)

Impact of the Aral Sea Syndrome - the Aralkum as a Man-Made Dust Source

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