Impacts of vegetation anomalies and agricultural drought on wind erosion over Iran from 2000 to 2018

Ebrahimi-Khusfi, Zohre; Mirakbari, Maryam; Ebrahimi-Khusfi, Mohsen; Taghizadeh–Mehrjardi, Ruhollah

doi:10.1016/j.apgeog.2020.102330

Cited by 20 publications

(5 citation statements)

References 77 publications

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“…The decline in DSIA after 2009 reflects a decrease in soil particulate emissions and improved air quality across western Iran in recent years, which agrees with the results of some past works (Kamal et al 2019;Namdari et al 2016). It is likely due to reducing some sand-dunes activity (Abbasi et al 2019) and the development of vegetation cover in some parts of the study area (Ebrahimi-Khusfi et al 2020b).…”

Section: Sde Monitoring In Western Iransupporting

confidence: 87%

“…The level of air pollution caused by SDE in different parts of the world varied at different space and time scales, depending on climatic conditions, terrestrial factors, and human activities (Chen et al 2020;Ebrahimi-Khusfi et al 2020b;Ebrahimi-Khusfi et al 2020c;Guo et al 2018). Therefore, identifying the associated drivers is essential to reduce SDE hazards.…”

Section: Introductionmentioning

confidence: 99%

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Dust storm index anomaly for sand-dust events monitoring in western Iran and its association with the NDVI and LST anomalies

Ebrahimi-Khusfi

Roustaei²

2021

Environ Sci Pollut Res

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Sand-dust events (SDE) are an increasing concern in many arid and semi-arid regions of the world, which have severely damaged air quality and human health in recent years. This study was conducted to monitor the SDE in western Iran using the dust storm index anomaly (DSIA) during 2000-2018. The spatiot-emporal change detection and statistical analysis were used to understand the impacts of normalized difference vegetation cover anomaly (NDVIA) and land surface temperature anomaly (LSTA) on the SDE activities. The area has suffered from the highest dust pollution in 2004, 2009, and 2012 (DSIA>+40) while it experienced the lowest dust pollution in 2002 and 2017 (DSIA<-40).Approximately 48% of western Iran experienced decreasing changes and 52 % of the total area experienced increasing changes in dust pollution during 2010-2018 compared to the previous years. Incremental changes in NDVIA and LSTA were observed in 73.2% and 7.5% of the study area while their decreasing changes were observed in 26.8% and 92.5% of the total area, respectively. Spatially, regions affected by the increase in dust pollution are mainly distributed in the eastern and southern regions of the study area. Significant effects of changes in anomalies of both terrestrial parameters on DSIA were observed throughout the study period (R LSTA-DSIA= +0.52; R NDVIA-DSIA= -0.41); P<0.05). It was also found that spatial correlation between LSTA and DSIA as well as NDVIA and DSIA in many parts of the study area were significant at the 95% confidence level ( 45 . 0  R). These findings can be useful for decision-makers to assess the risks of dust pollution and reduce its negative consequences in western Iran.

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Section: Sde Monitoring In Western Iransupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Dust storm index anomaly for sand-dust events monitoring in western Iran and its association with the NDVI and LST anomalies

Ebrahimi-Khusfi

Roustaei²

2021

Environ Sci Pollut Res

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“…In the Middle East, green belts and native plants have contributed to the reduction in the annual rates of mobile sand by 95.3% and 94%, and deposited dust by 68.4% and 64.5%, respectively [43,44]. Native plants play a major role in controlling saltation and suspension of sand and dust particles [45,46], while greenery areas also pose a negative feedback of dust emissions [47][48][49].…”

Section: Introductionmentioning

confidence: 99%

Long-Term Variability of Dust Events in Southwestern Iran and Its Relationship with the Drought

et al. 2021

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Dust storms represent a major environmental challenge in the Middle East. The southwest part of Iran is highly affected by dust events transported from neighboring desert regions, mostly from the Iraqi plains and Saudi Arabia, as well as from local dust storms. This study analyzes the spatio-temporal distribution of dust days at five meteorological stations located in southwestern Iran covering a period of 22 years (from 1997 to 2018). Dust codes (06, 07, 30 to 35) from meteorological observations are analyzed at each station, indicating that 84% of the dust events are not of local origin. The average number of dust days maximizes in June and July (188 and 193, respectively), while the dust activity weakens after August. The dust events exhibit large inter-annual variability, with statistically significant increasing trends in all of five stations. Spatial distributions of the aerosol optical depth (AOD), dust loading, and surface dust concentrations from a moderate resolution imaging spectroradiometer (MODIS) and Modern-Era Retrospective analysis for Research and Applications (MERRA-2) retrievals reveal high dust accumulation over southwest Iran and surrounding regions. Furthermore, the spatial distribution of the (MODIS)-AOD trend (%) over southwest Iran indicates a large spatial heterogeneity during 2000–2018 with trends ranging mostly between −9% and 9% (not statistically significant). 2009 was the most active dust year, followed by 2011 and 2008, due to prolonged drought conditions in the fertile crescent and the enhanced dust emissions in the Iraqi plains during this period. In these years, the AOD was much higher than the 19-year average (2000 to 2018), while July 2009 was the dustiest month with about 25–30 dust days in each station. The years with highest dust activity were associated with less precipitation, negative anomalies of the vegetation health index (VHI) and normalized difference vegetation index (NDVI) over the Iraqi plains and southwest Iran, and favorable meteorological dynamics triggering stronger winds.

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“…Frequent drought phenomena in such areas can lead to progressive soil erosion and consequent desertification of the land. Eventually, such land becomes worthless from an economic perspective 8 , 9 . For this reason, there is a tremendous need for proper care for drought-prone marginal lands.…”

Section: Introductionmentioning

confidence: 99%

The effect of combined drought and trace metal elements stress on the physiological response of three Miscanthus hybrids

Krzyżak

Rusinowski

Sitko

et al. 2023

Sci Rep

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Drought is a serious threat worldwide and has a significant impact on agricultural production and soil health. It can pose an even greater threat when it involves land contaminated with trace metal element (TMEs). To prevent desertification, such land should be properly managed and growing Miscanthus for energy or raw material purposes could be a solution. The effects of drought and TMEs were studied in a pot experiment on three different Miscanthus hybrids (conventional Miscanthus × giganteus, TV1 and GNT10) considering growth parameters, photosynthetic parameters and elemental composition of roots, rhizomes and shoots. GNT10 was characterised by the weakest gas exchange among the hybrids, which was compensated by the highest number of leaves and biomass. The strongest correlations between the studied parameters were found for TV1, which might indicate a high sensitivity to TME stress. For M × g and GNT10, the main mechanisms for coping with stress seem to be biomass management through number of shoots and leaves and gas exchange. The main factor determining the extent of accumulation of TMEs was the amount of water applied in the experimental treatment, which was related to the location of the plant in the aniso-isohydric continuum. GNT10 was the most resistant plant to combined stress, while it responded similarly to TV1 when drought and trace metal elements were applied separately.

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Impacts of vegetation anomalies and agricultural drought on wind erosion over Iran from 2000 to 2018

Cited by 20 publications

References 77 publications

Dust storm index anomaly for sand-dust events monitoring in western Iran and its association with the NDVI and LST anomalies

Dust storm index anomaly for sand-dust events monitoring in western Iran and its association with the NDVI and LST anomalies

Long-Term Variability of Dust Events in Southwestern Iran and Its Relationship with the Drought

The effect of combined drought and trace metal elements stress on the physiological response of three Miscanthus hybrids

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