Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran)
Dryland soil salinization strongly affects soil properties, with severe consequences for regional ecology, agriculture and the aeolian dust dynamics. Given its climate-sensitivity it forms a serious environmental hazard, and to cope with this challenge during current global warming it needs to be be...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X23007811 |
| _version_ | 1797683153507188736 |
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| author | Azra Khosravichenar Mehdi Aalijahan Saeid Moaazeni Anthony R. Lupo Alireza Karimi Mathias Ulrich Naser Parvian Aboozar Sadeghi Hans von Suchodoletz |
| author_facet | Azra Khosravichenar Mehdi Aalijahan Saeid Moaazeni Anthony R. Lupo Alireza Karimi Mathias Ulrich Naser Parvian Aboozar Sadeghi Hans von Suchodoletz |
| author_sort | Azra Khosravichenar |
| collection | DOAJ |
| description | Dryland soil salinization strongly affects soil properties, with severe consequences for regional ecology, agriculture and the aeolian dust dynamics. Given its climate-sensitivity it forms a serious environmental hazard, and to cope with this challenge during current global warming it needs to be better understood. The Bajestan Playa in the strongly salinization-affected Iranian drylands hosts several protected areas and forms an important regional dust source. Hence, soil salinization in this region affects local and regional ecosystems and societies, but was not systematically studied yet. Using an unprecedented comprehensive approach we systematically monitored regional soil salinity 1992–2021 using remote sensing as well as on-site field and laboratory measurements, and linked these with regional and global climatic data to understand (i) the spatio-temporal soil salinity dynamics, (ii) the impact of regional and global climate changes, and (iii) the potential of our approach for further soil salinity studies.Our annual time resolution over three decades provided significantly deeper and unprecedented insights into soil salinization: Both regional annual precipitation and temperature control soil salinity, but the latter responds to precipitation with time lags of up to two years and to higher temperatures without any time lag. This probably reflects the transport time of leached soluble salts from their sources following humid years. No systematic soil salinity changes were observed within the playa basin, but outside the basin soil salinity systematically increased. Whereas regional precipitation did not show a systematic trend during the last decades, regional temperature increased and was mostly correlated with the increasing GLOTI, POL and TSA climatic indices. Hence, given ongoing global warming a further increase of regional soil salinization should be expected, with serious consequences for saline dust emissions, the regional protected areas and climate-related migrations. Altogether, our multi-disciplinary pioneer study demonstrates a high future application potential also for other salinity-affected drylands, forming a base to deal with the consequences of ongoing global climate change. |
| first_indexed | 2024-03-12T00:10:25Z |
| format | Article |
| id | doaj.art-a8d0c8617bac481482be925d87f0e9b3 |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-12T00:10:25Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-a8d0c8617bac481482be925d87f0e9b32023-09-16T05:29:31ZengElsevierEcological Indicators1470-160X2023-10-01154110639Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran)Azra Khosravichenar0Mehdi Aalijahan1Saeid Moaazeni2Anthony R. Lupo3Alireza Karimi4Mathias Ulrich5Naser Parvian6Aboozar Sadeghi7Hans von Suchodoletz8Institute of Geography, Leipzig University, 04103 Leipzig, Germany; Institute of Geography, Technische Universität Dresden, 01069 Dresden, Germany; Corresponding author.Faculty of Human and Social Sciences, Geography Department, Marmara University, Istanbul 34722, Turkey; Department of Physical Geography, Mohaghegh Ardabili University, Ardabil 5619911367, IranDepartment of Rehabilitation of Mountain and Arid Zone, Faculty of Agriculture and Natural Resources, University of Tehran, IranSchool of Natural Resources, University of Missouri, Columbia, MO 65202, USADepartment of Soil Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad 9177948978, IranInstitute of Geography, Leipzig University, 04103 Leipzig, Germany; German Federal Environment Agency, Dessau, GermanyFaculty of Natural Resources and Environment, Ferdowsi University of Mashhad, Mashhad, IranDepartment of Physical Geography, Mohaghegh Ardabili University, Ardabil 5619911367, IranInstitute of Geography, Leipzig University, 04103 Leipzig, GermanyDryland soil salinization strongly affects soil properties, with severe consequences for regional ecology, agriculture and the aeolian dust dynamics. Given its climate-sensitivity it forms a serious environmental hazard, and to cope with this challenge during current global warming it needs to be better understood. The Bajestan Playa in the strongly salinization-affected Iranian drylands hosts several protected areas and forms an important regional dust source. Hence, soil salinization in this region affects local and regional ecosystems and societies, but was not systematically studied yet. Using an unprecedented comprehensive approach we systematically monitored regional soil salinity 1992–2021 using remote sensing as well as on-site field and laboratory measurements, and linked these with regional and global climatic data to understand (i) the spatio-temporal soil salinity dynamics, (ii) the impact of regional and global climate changes, and (iii) the potential of our approach for further soil salinity studies.Our annual time resolution over three decades provided significantly deeper and unprecedented insights into soil salinization: Both regional annual precipitation and temperature control soil salinity, but the latter responds to precipitation with time lags of up to two years and to higher temperatures without any time lag. This probably reflects the transport time of leached soluble salts from their sources following humid years. No systematic soil salinity changes were observed within the playa basin, but outside the basin soil salinity systematically increased. Whereas regional precipitation did not show a systematic trend during the last decades, regional temperature increased and was mostly correlated with the increasing GLOTI, POL and TSA climatic indices. Hence, given ongoing global warming a further increase of regional soil salinization should be expected, with serious consequences for saline dust emissions, the regional protected areas and climate-related migrations. Altogether, our multi-disciplinary pioneer study demonstrates a high future application potential also for other salinity-affected drylands, forming a base to deal with the consequences of ongoing global climate change.http://www.sciencedirect.com/science/article/pii/S1470160X23007811DesertificationDrylandsIranPlayaRegional and global climate changeRemote sensing |
| spellingShingle | Azra Khosravichenar Mehdi Aalijahan Saeid Moaazeni Anthony R. Lupo Alireza Karimi Mathias Ulrich Naser Parvian Aboozar Sadeghi Hans von Suchodoletz Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran) Ecological Indicators Desertification Drylands Iran Playa Regional and global climate change Remote sensing |
| title | Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran) |
| title_full | Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran) |
| title_fullStr | Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran) |
| title_full_unstemmed | Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran) |
| title_short | Assessing a multi-method approach for dryland soil salinization with respect to climate change and global warming – The example of the Bajestan region (NE Iran) |
| title_sort | assessing a multi method approach for dryland soil salinization with respect to climate change and global warming the example of the bajestan region ne iran |
| topic | Desertification Drylands Iran Playa Regional and global climate change Remote sensing |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X23007811 |
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